Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.1 Findings from Mrs Lee’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Lee’s daughter reported memory problems in her mother that had concerned her for seven months, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Other medical history includes diabetes mellitus, hypertension, osteoarthritis of the knee, and gout. The subdural haematoma was drained earlier this year. No family history of dementia or psychiatric disorders was reported.

Diagnosis

Post-brain injury early Alzheimer’s disease.

Management

A trial of low-dose cholinesterase inhibitors was recommended, alongside the prescription of an 18-month centre-based programme with cognitively stimulating activities to maintain cognitive functions and quality of life.

Suggestions for the Primary Care Team

This is an illustrative case of the interplay between ageing and cardiovascular risk factors for the development of Alzheimer’s disease. Mrs Lee’s age (82 years) falls into the age range when Alzheimer’s disease is highly prevalent. In her case, the dementia may coincide with a subdural haematoma. Her difficulty in word finding, which is not a typical feature of early Alzheimer’s disease, may be related to the subdural haemorrhage. Other features were compatible with early Alzheimer’s disease: an IADL being affected was medication management, which is typical of early Alzheimer’s disease. Although an MMSE score of 24 is not low, of note is the fact that her performance on the Clock Drawing Test was worse on the version requiring better executive functioning (drawing) than on the copying condition.

In early Alzheimer’s disease, cholinesterase inhibitors are not necessarily indicated. Non-pharmacological interventions, such as cognitively stimulating activities and social engagement, can help. In this case, the management of the cardiovascular risk factors should also be optimised.

In terms of non-pharmacological intervention and care, Mrs Lee’s strengths included satisfactory attention, the ability to handle immediate instructions, and orientation; areas of weakness needing more attention are limited short-term memory (compatible with forgetfulness in daily performance reported by the carer), executive functions (unable to follow or execute complicated instructions), and impaired abstract thinking (e.g., the concept of time). Based on this profile, it is likely that advance reminders may not work, and immediate verbal coaching with simplified reminders (e.g., step-by-step instructions) would be more helpful in maintaining Mrs Lee’s existing ADL/IADL functions.

The primary care team is advised to pay attention to physical discomfort and mood, as Mrs Lee may not be able to express these feelings and sensations clearly, and close observation by carers would be needed. Mrs Lee could still benefit from cognitively stimulating, social, and physical activities to delay deterioration, and therefore these should be encouraged. Given her good orientation and ability to engage in community living activities, these should also be encouraged, although support with supervision and an anti-lost/location-tracking device would be needed to ensure safety.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.2 Findings from Mrs Chak’s Clock Drawing Test.

*A Chinese character 3 can be seen on the clock face, next to the Arabic number 3.

History Taken with Carer by Primary Care Physician

Mrs Chak’s daughter reported noticing memory problems in her mother that had concerned her for two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Chak had diabetes, bilateral cataract, and a left hip replacement three years ago. No family history of psychiatric disorders or dementia was reported. She was reported to have received more than six months but less than two years of education.

Diagnosis

Early Alzheimer’s disease.

Management

Donepezil 5 mg every alternate night was prescribed. Mrs Chak was also recommended to join a centre-based programme with cognitively stimulating activities for 18 months for the maintenance of cognitive function.

Suggestions for the Primary Care Team

At 81 years old, Mrs Chak was at the usual age of symptom presentation for Alzheimer’s disease. Although the MMSE score indicated a moderate severity of Alzheimer’s disease, the Barthel Index score showed minimal help needed in her ADLs. She had problems managing her medications, which is an early sign of Alzheimer’s disease. In the Clock Drawing Test, she could not perform on the executive part, but improved in copying. These suggest early-to-moderate Alzheimer’s disease, in which a cholinesterase inhibitor is indicated. On top of pharmacological management, cognitively stimulating activities are always necessary. Fall prevention is also important in view of a history of left hip replacement and early-to-moderate dementia.

In terms of non-pharmacological intervention and care, Mrs Chak’s strengths included her satisfactory ADL performance: she was still able to do simple household tasks (e.g., laundry, reheating food, and housekeeping) and had community access (e.g., going to a restaurant and grocery shopping), though her performance was affected by her short-term memory decline and needed supervision. She was also good at verbal expression and social communication, attention and following immediate instructions, and procedural memory in handling familiar daily living tasks. Her areas of weakness needing more attention included orientation and thus the risk of getting lost, poor short-term memory (she was able to encode but impaired in storage and retrieval), and an impaired concept of time.

The primary care team is advised to encourage Mrs Chak to continue engaging in daily living tasks to maintain functioning and quality of life, with simplified steps in the tasks to maintain her motivation by ensuring that the tasks are failure-free. It is likely that advanced reminders in appointments, taking medications, to-do tasks, etc., would not be applicable, and Mrs Chak would benefit more from immediate instructions or reminders: for example, immediate reminders can be inserted inside Mrs Chak’s wallet to reduce repeated shopping of the same item; an audio reminder device can be placed at the entrance of the home to remind her about repeatedly going out for shopping. In view of her high risk of getting lost, an anti-lost device would be needed at home, and a location-tracking device would be needed when going out. As Mrs Chak’s condition progresses, she may become more disoriented in time, day and night, so a well-structured daily routine and strategies for maintaining a regular circadian cycle would be important. Finally, public education and community engagement, such as educating nearby shopkeepers about dementia, would be helpful.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.3 Findings from Mr Lam’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Lam’s homecare worker reported noticing memory problems in this client that had concerned her for two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ○ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mr Lam has hypertension. No family history of psychiatric disorders or dementia was reported. His level of education was unclear, except that he has probably received more than two years of education.

Diagnosis

Mild Alzheimer’s disease.

Management

Donepezil 5 mg every alternate night was prescribed. Mr Lam was recommended to join a centre-based programme with cognitively stimulating activities for 18 months, to maintain cognitive and self-care functions; he was also encouraged to have regular exercise, a healthy diet and mental stimulation, and to stay socially active.

Suggestions for the Primary Care Team

We can note the usual age of presentation in this case: when Mr Lam was brought to seek medical attention, he was over 80 years old. Very often, the symptoms retrospectively reported by a knowledgeable informant upon direct questioning would date back one to two years before the person is brought to the clinic/service. Impaired short-term memory is the most common presentation of early Alzheimer’s disease as it is easily noticed by carers. A typical pattern of this disease stage can be observed in Mr Lam’s MMSE findings, with orientation to time more impaired than orientation to place, registration remaining intact, and serial subtractions often impaired (depending on education level); the more sensitive and telltale sign would be impaired delayed recall, which is observed in this case. Communication and speech are usually intact at this stage. The visuospatial ability as indicated by the interlocking pentagon result tends to be impaired, as in this case. While ADLs are largely independent at this stage, IADLs would be impaired. A cholinesterase inhibitor should be prescribed. Both pharmacological and non-pharmacological interventions are effective in early Alzheimer’s disease.

Mr Lam’s strengths included good ADLs despite his older age; continued engagement in these activities can therefore be used as a form of training or stimulation. Appropriate exercise to enhance physical strength, such as a morning walk in a park, should be encouraged, as better physical tolerance can be useful for keeping up his motivation in participating in daily activities. Another strength of Mr Lam is his generally satisfactory cognitive performance except for short-term memory. Engagement in regular daily cognitively stimulating activities based on his existing interests would help.

Family members may not always be available to provide history. In this case, a homecare helper can also be an important informant. Whenever possible, disclosing the diagnosis with a family member is helpful to ensure understanding and arrange future care through a collaborative process.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mr To’s grandson reported noticing memory problems in his grandfather that had concerned him for three to four years. Delusional ideations and other distressed behaviours and neuropsychiatric symptoms of dementia were reported, including poor temper, the frequent scolding of family members, and waking up in the middle of the night to repeatedly look for items such as keys and money. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were several additional clinical features to consider for non-Alzheimer’s dementia, including an inability to control his mood and aggression, as well as overeating, especially sweet food. Mr To has hypertension, hypercholesterolaemia, and gout. No family history of psychiatric disorders or dementia was reported. Mr To’s education level was unclear, except that he has probably received more than two years of education.

Investigations

CT brain (plain) was ordered.

Diagnosis

Moderate Alzheimer’s disease.

Management

No medication was prescribed at the first consultation due to pending investigation results. Mr To was recommended to join a centre-based programme with cognitively stimulating activities for at least 18 months, for the maintenance of cognitive functions.

Suggestions for the Primary Care Team

Mr To presented at a slightly older age of 88 years. His MMSE findings showed a typical impairment pattern for Alzheimer’s disease with impaired delayed recall, and his IADLs were more impaired than his ADL. The primary care team should note that Mr To’s performance on the Clock Drawing Test was satisfactory even on the executive part, which is a strength. The reasons for seeking medical attention were also typical of Alzheimer’s disease, including repeated questioning, forgetting to turn off the water, and getting lost easily. Taken together, this is a typical case of Alzheimer’s disease occurrence in old age. A low-dose cholinesterase inhibitor is indicated in moderate Alzheimer’s disease. Physicians may also consider using memantine to manage agitation and irritability. When the ageing process affects the temporal region and spreads to other areas of the brain, older people may develop symptoms mimicking other types of dementia, such as frontotemporal dementia. Nocturnal symptoms are hazardous to the person and their family members. In some cases, low-dose antipsychotics, such as quetiapine, may be used before sleep.

In terms of non-pharmacological intervention and support, considering his impairment in short-term memory and his inability to recall even with cues, reminders may not be a helpful option for Mr To. Adaptive strategies could be used to facilitate adapting to the dysfunctions, instead of relying on reminders or training. Aids such as sensor taps and location-tracking devices can be used; equipping carers with appropriate communication and caring skills would also be useful, to help them respond to Mr To’s repeated questioning and other challenging behaviours. At an advanced age, Mr To’s ADLs were satisfactory and well maintained (he was independent in most activities); his use of functions should be facilitated, and assistance should be provided only to compensate for the dysfunctions, to maintain his strengths for as long as possible. For example, as he was unable to choose appropriate clothes but able to dress himself, carers could help in preparing suitable clothes only, or in reducing the number of choices of clothes, and allow him to dress himself independently. In terms of safety, carers need to be reminded of the risk of getting lost; supervision in outdoor activities and the installation of an anti-lost sensor at home can be recommended. The fact that Mr To’s grandson was involved in bringing him for consultation should lead to further exploration of family support and other potentially available resources that can be mobilised to support Mr To’s care in the community.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.4 Findings from Mr Chow’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Chow’s daughter reported noticing memory problems in her father that had concerned her for one to two years. Delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There was an additional clinical feature to consider for non-Alzheimer’s dementia: he has apraxia in self-care. Mr Chow has hypertension, gout, bronchiectasis, pancytopenia, and benign prostatic hyperplasia. No family history of psychiatric disorders or dementia was reported. He has received more than six months but less than two years of education.

Investigations

Calcium, VDRL, vitamin B₁₂, folate, and ECG were ordered.

Diagnosis

Alzheimer’s disease.

Management

Rivastigmine transdermal system 4.6 mg daily was prescribed. Mr Chow was recommended to join a centre-based programme with cognitively stimulating activities for 18 months, for the maintenance of cognitive and self-care functioning; he was also encouraged to have regular exercise, a healthy diet, and mental stimulation, and to stay socially active.

Suggestions for the Primary Care Team

Mr Chow presented with cognitive symptoms at a very old age, at 94 years. He showed typical pattern deficits in cognitive functions and daily activities: his IADLs were much more affected than ADLs, and his performance in the Clock Drawing Test was worse in the executive part compared with the copying part. These patterns are compatible with Alzheimer’s disease. It should be noted, however, that presentation in the 90s may indicate a different pathology other than amyloid: studies have shown that for symptoms occurring at an extremely old age, the underlying pathology may be hippocampal sclerosis rather than amyloid-driven disease (1, 2). His mild delusional ideas, mostly surrounding theft, may have arisen from poor memory and may relate to his personality. Taken together, Alzheimer’s disease remains the most likely diagnosis, and a trial of a low-dose cholinesterase inhibitor (e.g., donepezil 2.5 mg) can be started, while the team observes for changes in cognition. Antipsychotics are not necessarily indicated if the delusional ideas can be handled by non-pharmacological means, such as distraction and the provision of cues.

In planning for non-pharmacological interventions and support/care, the following areas of strengths and weaknesses should be considered: Mr Chow’s ADLs were well maintained in his old age; maintenance of ADLs can be used as a strength as part of his training, enhancing his physical strength through appropriate exercise (e.g., a morning walk in a park/garden), as better physical tolerance can help maintain his motivation in participating in daily activities. Deficits in IADLs are common in old age, and people living with dementia at this age might have been relying on carers (family members or helpers) over a long period of time and become deskilled. In such cases, it can be challenging for the person to return to an independent level of functioning; nevertheless, participation in outside activities with a carer should be encouraged as much as possible, to maintain community functioning. As the disease progresses and short-term memory becomes impaired further, it is foreseeable that Mr Chow’s delusional ideation and other distressed behaviours and neuropsychiatric symptoms of dementia would worsen over time. The primary care team can advise his family to keep a regular schedule for Mr Chow, learn to cope psychologically and answer patiently when he asks questions repeatedly, help him to check his own belongings proactively in time or whenever he asks, and help Mr Chow develop a sense of security.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.5 Findings from Mrs Cheung’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Cheung’s daughter reported noticing memory problems in her mother that had concerned her for three years. Delusional ideations were reported (she suspected her daughter of stealing her money). Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Cheung has hypertension, diabetes, and a fractured left hip (total hip replacement was done three years ago). No family history of psychiatric disorders or dementia was reported. She has received less than six months of education.

Diagnosis

Moderate Alzheimer’s disease.

Management

Donepezil 2.5 mg every alternate night and an 18-month centre-based programme with cognitively stimulating activities were prescribed to help Mrs Cheung maintain her cognitive and self-care functioning. Mrs Cheung was also encouraged to have regular exercise, a healthy diet, and mental stimulation, manage stress, and remain socially active. Non-pharmacological interventions were recommended to manage her distressed behaviours and neuropsychiatric symptoms of dementia.

Suggestions for the Primary Care Team

Mrs Cheung presented at a typical age of symptom presentation (in her 80s). Her performance was impaired in delayed recall and visuospatial relationships (copying an interlocking pentagon on MMSE), an impairment pattern that is compatible with Alzheimer’s disease. Her ADLs were less impaired than IADLs, and in the Clock Drawing Test, she showed greater impairment in the executive part than in the copying part. Taken together, her presentation is typical of Alzheimer’s disease. Considering that she was dependent in bathing, if not explained by other comorbid conditions (e.g., stroke), a moderate level of severity is suggested. Delusional ideas of theft against her carers (often against a paid informal carer such as a domestic helper, if there is one, or a family member), are common in moderately severe Alzheimer’s disease. In this case, a cholinesterase inhibitor can be started (e.g., donepezil 2.5 mg, stepping up if needed), and the team should observe if Mrs Cheung’s delusion (of her daughter stealing her money) improves with treatment. As the delusional idea or suspicion of a close family member can be disturbing to the family, if there is no improvement or if the delusional symptoms are severe, a low-dose antipsychotic may be considered.

Typical of cognitive deterioration in the moderate to severe stage of Alzheimer’s disease, most of Mrs Cheung’s higher-level cognitive functions and short-term memory were impaired, although she can still perform well in communication (language) and attention. The primary care team can therefore equip carers with appropriate caring and communication skills. For example, family members can be advised to avoid confrontation or correcting Mrs Cheung directly when she fails to recall a fact accurately; instead, carers can proactively provide her with the correct information whenever appropriate, such as her family members’ names whenever they meet. Engaging her in more social activities, such as family gatherings and reminiscence groups, may also help.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.6 Findings from Mrs Leung’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Leung’s daughter and son reported noticing memory problems in their mother that had concerned them for two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

Mrs Leung showed apraxia in self-care, which was an additional clinical feature to consider for possible non-Alzheimer’s dementia. Mrs Leung has hypertension and diabetes. No family history of psychiatric disorders or dementia was reported. Her education level cannot be ascertained.

Diagnosis

Moderate Alzheimer’s disease.

Management

Donepezil 2.5 mg every alternate night and an 18-month centre-based programme with cognitively stimulating activities were prescribed to maintain cognitive functions and quality of life; she was also encouraged to have regular exercise, a healthy diet, and mental stimulation, manage stress, and remain socially active.

Suggestions for the Primary Care Team

In this case of moderate Alzheimer’s disease, the typical pattern of cognitive performance on the MMSE and Clock Drawing Test can be observed as discussed in earlier cases (e.g., poor performance on the executive part of the Clock Drawing Test, which improves on the copying part). What can also be noted in this case is the additional effect of age on cognitive performance: Mrs Leung presented in her late 80s; compared with individuals presenting at a younger age, cognitive screening test (e.g., MMSE and MoCA) scores among older individuals are often lower. The primary care team is advised to pay attention to the effects of ageing on cognition, which could play a collateral role in Alzheimer’s pathology. In Mrs Leung’s case, a moderate stage of Alzheimer’s disease is likely, and the team can observe her response to donepezil 2.5 mg; if indicated, titrating up to 5 mg can be considered. Memantine may also be added on top of donepezil in moderate Alzheimer’s disease.

Typical of cognitive deterioration in the moderate to severe stage of Alzheimer’s disease, most of Mrs Leung’s higher-level cognitive functions and short-term memory were impaired, although she can still perform well in communication (language) and attention. The primary care team can therefore equip carers with appropriate caring and communication skills, such as the avoidance of direct confrontation and correction if Mrs Leung fails to recall a fact, and providing information proactively. As Mrs Leung’s inability to recall the names of her children can be emotionally distressing for her daughter and son, psychoeducation and counselling for the family (e.g., that feelings may be preserved even when episodic memory is impaired) may be helpful in facilitating psychological adjustment. Subtle reality orientation, such as providing Mrs Leung with the correct information in casual conversations whenever they meet (e.g., mentioning family members’ names), could also help maintain her memories. Engaging Mrs Leung in family gatherings, reminiscence groups, or life review activities may also be useful.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.7 Findings from Mr Chow’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Chow’s daughter reported noticing memory problems in her father that had concerned her for over two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mr Chow has hypercholesterolaemia. No family history of psychiatric disorders or dementia was reported. His exact education level cannot be ascertained, although according to his daughter Mr Chow has probably received more than two years of education.

Diagnosis

Early Alzheimer’s disease.

Management

No medication was prescribed at this stage, as Mr Chow’s carer claimed he was already on dementia medications and further information was pending. Mr Chow was recommended to join a centre-based programme with cognitively stimulating activities for 18 months to maintain his cognitive performance and self-care functions; he was also encouraged to have regular exercise, a healthy diet, and mental stimulation, and maintain an active social life.

Suggestions for the Primary Care Team

Repeated questioning is a common manifestation of impaired short-term memory. This case also illustrates a typical presentation of early Alzheimer’s disease at a common age of symptom presentation in the early 80s: Mr Chow showed impairments in delayed recall, but was intact in registration, language, and calculation. It is typical for a person with early Alzheimer’s disease to show more obvious impairments on the Lawton IADL scale, while results on the Barthel Index (ADL) would often appear more intact. What is noticeable in this case is that Mr Chow’s visuospatial relationships (interlocking pentagon) performance was intact, while the Clock Drawing Test was positive. This illustrates the understanding that the Clock Drawing Test can be a more sensitive test for early Alzheimer’s disease than the interlocking pentagon. As Mr Chow is likely taking anti-dementia medication already, physicians can observe and monitor his cognitive performance and step up the medications in the event of cognitive decline in the future.

In this case of the early stage of typical Alzheimer’s disease, another illustrative point is that Mr Chow has more areas of strengths than weaknesses that the primary care team can leverage in his care plan. A key intervention target is to maintain his areas of strength, namely good daily functional performance in ADL and IADL, intact orientation, good attention, and other higher cognitive functions (e.g., calculation, as well as financial management, judgement, and problem-solving required for various IADL tasks). Mr Chow may still be able to develop new habits that can enhance his functioning and safety, such as keeping with him and using a mobile phone, a location-tracking device, and/or a smart watch. While he should still be able to function in terms of organising and executing daily living activities, carers should nevertheless be reminded about his emerging needs due to poor short-term memory: Mr Chow was able to encode, but unable to store and retrieve information. Timely reminders and other strategies to maintain his motivation to participate in daily activities would be the priority for intervention and support during this stage.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.8 Findings from Mr Tam’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Tam’s son reported noticing memory problems in his father that had concerned him for four to five years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Comorbidity of hypertension was reported. No family history of psychiatric disorders or dementia was reported. His exact education level cannot be ascertained, although his son reported that he has probably received more than two years of education.

Investigations

VDRL, vitamin B₁₂, folate, CXR, TSH, and T4 tests were ordered.

Diagnosis

Early Alzheimer’s disease.

Management

Rivastigmine transdermal system 5 mg daily and an 18-month programme of centre-based cognitively stimulating activities for maintaining cognitive ability and quality of life were prescribed.

Suggestions for the Primary Care Team

This is a typical case of early Alzheimer’s disease. While Mr Tam presented at a typical age (early 80s) to the primary care team, in retrospect the age of onset could have been around his late 70s (informant noted four to five years of symptom history), with further deterioration in the past few years leading to medical attention. It is therefore likely that a mild cognitive impairment stage has preceded the onset of clinical Alzheimer’s disease. In similar cases, if presented earlier during the mild cognitive impairment stage, non-pharmacological interventions such as mentally stimulating activities can be prescribed even if medication is usually not indicated. Non-pharmacological interventions could be helpful in delaying the onset of clinical Alzheimer’s disease. In Mr Tam’s case, the dose of transdermal rivastigmine can be escalated in the event of worsening cognitive function.

Repeatedly searching for loved ones who are not around is a common phenomenon in people with early to moderate dementia. The main cause of such behaviours is a deterioration in short-term memory, which makes remembering recent events and changes challenging. This phenomenon highlights the need to maintain consistency and regularity in the person’s daily habits and living environment, which includes the social environment and the people around them. In Mr Tam’s case, a strategy to help him overcome his repeated searching is to allow regular visits to his wife if possible. When Mr Tam asks, providing him with the fact that his wife is in hospital should be done with care to avoid triggering negative emotions such as depressive mood and anxiety: his search for his wife could reflect his anxiety at not having her around, and he could be missing his wife. Depending on the emotional needs, which should be understood on a case-by-case and person-centred basis, strategies to address the underlying needs (e.g., engaging him in a discussion about his marriage or viewing a family photo) may be a validating response that helps more than factual correction. In the event that a negative mood is triggered and the person is in distress, sometimes carers and family members may find distraction and engaging the person in other enjoyable activities helpful. Regular, personally meaningful, and enjoyable daily activities can be used as a preventive strategy to reduce the repeated search of loved ones.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.9 Findings from Mrs Pong’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Pong’s daughter reported noticing memory problems in her mother that had concerned her for three years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Pong has hypertension, diabetes, hypercholesterolaemia, cerebrovascular accident (four years ago), arrhythmia, and bilateral cataract (operated on). No family history of psychiatric disorders or dementia was reported. Her exact education level cannot be ascertained, although her daughter reported that she has received more than six months but less than two years of education.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B₁₂, folate, fasting sugar, fasting lipids, and TSH were ordered. Apart from ESR 26 (high), other investigations were normal. CT brain (plain) and MRI revealed a mixed picture of dementia: there were generalised cerebral age-related atrophy and microangiopathic changes over the subcortical white matter of bilateral frontal, parietal, and occipital regions.

Diagnosis

Early Alzheimer’s disease.

Management

Rivastigmine transdermal system 5 mg and 10 mg alternate daily were prescribed. Mrs Pong was also recommended to join a centre-based programme with cognitively stimulating activities for 18 months for the maintenance of cognitive abilities.

Suggestions for the Primary Care Team

Compared with other cases in this cohort, Mrs Pong presented at a slightly younger age. Her history of a cerebrovascular accident four years before the current presentation may have advanced the onset of the clinical manifestation of dementia symptoms. The impairment pattern of cognition and ADL/IADL is compatible with typical Alzheimer’s disease (e.g., impairment shown on the executive part of the Clock Drawing Test, which improved on the copying part). Of note in this case is the possible relationship between the cerebrovascular accident history and Alzheimer’s disease: while the presence of stroke does not immediately lead to a diagnosis of vascular dementia, in some cases the possibility of vascular involvement may not be completely excluded. In the case of Mrs Pong, the duration between her cerebrovascular accident and the current significant decline suggests that Alzheimer’s disease is more likely than vascular dementia. The CT brain scan showed bilateral microangiopathic changes: white matter disease is a risk factor for Alzheimer’s disease (3). Treatment with a cholinesterase inhibitor is therefore indicated in Mrs Pong’s case, while physicians may consider adding memantine on top of the rivastigmine transdermal patch.

As a person in her early stage of Alzheimer’s disease, Mrs Pong was independent in her ADLs, although her IADLs showed a higher-than-expected level of dependency. While at this stage a person’s short-term memory and complex cognitive processing would be affected, often procedural memory would remain intact. It should be noted that a person’s IADL dependency level can be affected by mood states (e.g., anxiety and depression) and a low level of self-confidence or motivation. Carers and family members could try to encourage Mrs Pong to participate more in daily activities based on her interests and premorbid role. Social skills and communication appeared to be her current strengths, and social activities such as family gatherings and reminiscence may work by tapping into her strengths.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Ng’s daughter reported noticing memory problems in her mother that had concerned her for one to two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Ng has hypertension and a benign gastrointestinal tumour. No family history of psychiatric disorders or dementia was reported. She has received less than six months of education. Mrs Ng currently lives alone, with her daughter staying with her on weekends.

Diagnosis

Mild dementia.

Management

Donepezil 5 mg every night and an 18-month centre-based programme of cognitively stimulating activities for maintaining cognitive ability were prescribed.

Suggestions for the Primary Care Team

Presenting at an old age, Mrs Ng’s low MMSE score on presentation was within expectation. Mrs Ng showed the typical pattern of cognitive impairment and functional decline in Alzheimer’s disease: greater impairment in orientation to time than to place; in IADL than ADL; in the executive part than the copying part of the clock drawing; and impairments in delayed recall and visuospatial relationships (interlocking pentagon), with a history of one to two years in retrospect. Her clinical profile was compatible with early Alzheimer’s disease. A trial of a cholinesterase inhibitor is indicated: a lower dose of donepezil (e.g., 2.5 mg) may be suitable for Mrs Ng considering the age factor, when physicians can monitor her clinical response to donepezil and escalate the dose in the event of further cognitive decline. A transdermal patch is preferred to oral formulation when patients develop side effects, such as reduced oral intake and gastrointestinal upset.

This is a good example to illustrate how ADL and even IADL functional levels may be maintained despite significant impairments in cognitive function. Particularly in people living with dementia who are active with a high level of premorbid independence in daily activities, a slower deterioration in functioning than in cognitive test performance can be seen. It highlights the importance of engaging people living with dementia in daily activities as much as possible to slow down functional deterioration. In Mrs Ng’s case, most of her cognitive functions, especially short-term memory, were clearly impaired. With satisfactory attention and communication, however, most of the tasks requiring procedural memory in ADL and IADL remained intact. To encourage her continued participation in daily activities, the primary care team should equip her carers with the knowledge and psychological preparedness for deterioration, when Mrs Ng becomes ‘clumsier’ in self-care: instead of giving up the tasks, carers can start to facilitate by assisting or simplifying the tasks and by learning appropriate communication skills (e.g., giving Mrs Ng the information needed whenever she asks, avoiding direct confrontation for her ‘mistakes’).

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.10 Findings from Ms Chan’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Chan’s daughter reported noticing memory problems in her mother that had concerned her for two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Chan has hypertension, atrial fibrillation, dyslipidaemia, multinodular goitre, osteoporosis, and left hip fracture with a total hip replacement 12 years ago. She is currently on warfarin 2 mg daily, famotidine 20 mg daily, simvastatin 10 mg at night, alendronate sodium 70 mg once weekly, and cetirizine 10 mg daily. No family history of psychiatric disorders or dementia was reported. She has received primary education of P.2 (approximately two years of education).

Physical Examination Findings

General examination revealed no affect or hygiene problem. Atrial fibrillation was noted during CVS examination. There were no significant CNS findings.

Investigations

CBP, R/LFT, calcium, vitamin B₁₂, fasting sugar, fasting lipids, and TSH were ordered. CBP, vitamin B₁₂, and TSH were normal, whereas VDRL was negative. MRI revealed no evidence of disease.

Diagnosis

Mild cognitive impairment or early Alzheimer’s disease.

Management

No medication was prescribed, as Ms Chan and her carer prefer not to start treatment at this stage. Ms Chan was recommended to join a specialised day care service for two days per week for two years, with a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

Ms Chan presented at a relatively younger age, and her higher MMSE score was within expectations. While her performance on the cognitive screening test showed a typical pattern of Alzheimer’s disease, her ADL as shown in the Barthel Index was more impaired than expected, which was attributable to lower limb weakness. Her lower limb weakness needs to be medically assessed, as Alzheimer’s disease in the early stages should not affect a person’s mobility. It should also be noted that her GDS-15 assessment suggested depressive symptoms, which could have affected her cognitive and physical functioning. Ms Chan may have adjustment problems due to her cognitive impairment, which is common, especially in people with anxiety-prone personality traits, those who are younger, and individuals with insight into their cognitive problems. In this case, early Alzheimer’s disease with adjustment disorder or depression should be suspected. Comorbid Alzheimer’s disease and depression may also indicate a common neurologically based phenomenon. Considering Ms Chan’s younger-than-usual age of presentation, lower limb weakness, and her strong vascular risk with atrial fibrillation, more advanced neuroimaging such as MRI is indicated to rule out significant vascular comorbidity. Close monitoring for further deterioration is needed.

Considering Ms Chan’s preserved language and communication ability, a social worker in the primary care team can further assess any psychosocial factors contributing to her depressive mood. As anxiety and depressive moods in people with early stages of dementia with insight are quite common, if this is the case for Ms Chan, psychoeducation about dementia and strategies to facilitate support and adjustment may be helpful. In the event of more complicated or severe mood problems, counselling and psychotherapy can be considered, especially in view of her relatively intact cognitive functioning.

Her general functioning is satisfactory at this stage, with ADL and IADL largely independent, except for slight impairments that may be more related to physical than cognitive problems. The primary care team can equip Ms Chan with adaptive memory strategies, structured with cognitively stimulating activities to fit into her daily schedule as leisure activities, and a regular daily schedule to facilitate awareness of completed and unfinished tasks.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mr Choy’s son reported noticing memory problems in his father that had concerned him for about three years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ? Managing medication independently (carer was unaware of Mr Choy’s ability)

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. No family history of psychiatric disorders or dementia was reported. He received secondary education up to Form 3 (approximately nine years of education). Mr Choy walks with an umbrella. He was living with his wife.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Mr Choy had a blood pressure of 147/69 mm Hg. No other CVS or CNS findings were noted.

Investigations

TFT, vitamin B₁₂, CBP, R/LFT, and fasting lipids were ordered. MRI result showed small vessel disease.

Diagnosis

Early Alzheimer’s disease.

Management

Rivastigmine transdermal system 4.6 mg daily was prescribed. Mr Choy was also recommended to join a specialised day care service for two days per week for two years, with structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

Mr Choy presented at the age of 79 years, which was slightly younger than others in the cohort, although his MMSE results showed a typical pattern for Alzheimer’s disease. Considering the normal results from the Clock Drawing Test and his intact ability in the visuospatial relationships (interlocking pentagon in MMSE), this is likely a case of early Alzheimer’s disease. His impairment in orientation to place in the test needs to be interpreted with caution, as his performance may be affected if the test took place in an unfamiliar location for Mr Choy. On the other hand, the earlier presentation of symptoms may also suggest a more aggressive amyloid load. As Mr Choy is self-aware with insight into his own cognitive or memory problem, it may indicate good premorbid cognitive functioning, with the disease in an early phase. Physicians should watch out for mood problems, as adjustment disorder is common in these patients.

Although Mr Choy showed intact orientation in time on MMSE, the primary care team should also pay attention to the carer’s complaint of his mixing up of day and night. The team should observe if there is any tendency for dysregulation in the circadian cycle. Mr Choy has a history of (and thus high risk for) getting lost, which should be carefully attended to. A strength that the primary care team can leverage is his ability to use the phone. As it is foreseeable that his risk of getting lost will increase as the disease progresses, he may no longer be able to describe his location to family members if he gets lost again in the future. Installing a location-tracking app on his mobile phone or using a smart watch or device with a GPS function should be encouraged.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.11 Findings from Mr Chan’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Chan’s wife reported noticing memory problems in her husband that had concerned her for about two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mr Chan was on pantoprazole 40 mg daily, folic acid 5 mg once per week, methotrexate 7.5 mg once a week, and Calcichew 1000 mg daily. No family history of psychiatric disorders or dementia was reported. He received primary education to P.5 (approximately five years of education).

Physical Examination Findings

General examination revealed no affect or hygiene problem. Mr Chan had a normal blood pressure of 123/64 mm Hg. No other significant CVS or CNS findings.

Investigations

A CT brain scan was ordered.

Diagnosis

Early dementia, possible Alzheimer’s disease.

Management

Rivastigmine transdermal system 4.6 mg daily was prescribed. He was also recommended to join a specialised day care service for two days per week, with a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

Mr Chan’s symptomatology is suggestive of early Alzheimer’s disease. Physicians should also look for features of parkinsonism, such as resting tremors, cogwheel rigidity, bradykinesia, and gaze palsy. During history-taking, physicians should try to delineate the timing of the onset of cognitive impairment and shaking mouth; the presence of any visual hallucinations should be elicited. Both Alzheimer’s disease and Parkinson’s disease are neurodegenerative conditions. The differential diagnoses in this case are Alzheimer’s disease with parkinsonism and atypical parkinsonism (e.g., dementia with Lewy’s body). Presenting at the age of 82 years, Mr Chan was at a typical age of dementia onset. Although his cognitive impairment was greater than expected, his impairment pattern on MMSE, Barthel Index and Lawton IADL, and the Clock Drawing Test was typical of early Alzheimer’s disease.

Mr Chan’s engagement in community living activities and IADL tasks may diminish over time due to his parkinsonism. At the current stage, his ADLs remained satisfactory, and that should be the focus of intervention: support should be provided to keep up his motivation and initiation in these tasks. Despite his disorientation in time, he was able to orient in place: this is a strength that the primary care team can focus on maintaining. Care should be taken to minimise the risk of Mr Chan giving up on activities outside the home due to his physical condition. Meanwhile, it would be appropriate to start preparing the family carers in advance psychologically for deterioration, and in terms of caring skills needed for a moderate stage of dementia.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.12 Findings from Mr Chan’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Chan’s son reported noticing memory problems in his father that had concerned him for about three years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mr Chan has hypertension. He is currently on nifedipine retard 20 mg twice daily, prazosin 0.5 mg twice daily, and allopurinol 100 mg daily. No family history of psychiatric disorders or dementia was reported. He received primary education to P.6 (approximately six years of education). Mr Chan was noted to have few social activities.

Physical Examination Findings

General examination revealed hygiene problems but no affective problem. No significant CVS or CNS findings.

Investigations

R/LFT, vitamin B₁₂, folate test, TSH/FT4, and H’stix were ordered. Apart from H’stix 6.6, all other investigations were normal. A CT brain (plain) scan revealed cerebral atrophy.

Diagnosis

Alzheimer’s disease.

Management

Rivastigmine transdermal system 5 mg daily was prescribed. Mr Chan was also recommended to join a specialised day care service for two days per week for two years, with a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

The scenario in this case typifies early Alzheimer’s disease, with a typical pattern of cognitive impairment shown on MMSE, and differential impairment on the Barthel Index versus the Lawton IADL Scale. The dose of rivastigmine can be escalated in the event of worsening cognitive function.

Low volition and hygiene problems were noted, and Mr Chan has mild impairment in initiating changes of clothes and taking showers. The primary care team should pay attention to the potential development of common distressed behaviours and neuropsychiatric symptoms of dementia, namely resistance to care. At this stage, intervention and support should focus on improving Mr Chan’s volition in participating in daily living activities. Building up a daily routine based on his premorbid interests or lifestyle and scheduling regular cognitively stimulating activities at home or in the day care centre would be helpful. Family carers can be equipped with the caring skills that can promote functioning and facilitate self-care, such as by placing Mr Chan’s belongings in a fixed place, using signs and cues to remind him about locations, changing the doors of cabinets into transparent ones to make searching easier, providing Mr Chan with lockable drawers with keys to increase his sense of security, and keeping spare keys in case they are misplaced or lost. Although Mr Chan’s depressive symptoms did not reach a clinically significant level on assessment, because of the possible association between depressive mood and low motivation and self-neglect, the primary care team should explore if there may be any unmet psychosocial needs that can be addressed. Mr Chan attended the screening assessment unaccompanied by a family carer who could serve as an informant; whether Mr Chan has sufficient social support and the extent to which his son and other family members would be available to support his future care needs to be explored as part of his care plan.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Wong’s daughter reported noticing memory problems in her mother that had concerned her for two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. No comorbidity was reported. Her exact education level cannot be ascertained, although she has probably received more than two years of education according to her daughter.

Diagnosis

Alzheimer’s disease.

Management

Mrs Wong was recommended to join a centre-based programme with cognitively stimulating activities for 18 months to maintain cognitive and self-care functioning; she was encouraged to have regular exercise, a healthy diet, and mental stimulation, manage stress, and maintain an active social life.

Suggestions for the Primary Care Team

At age 75, Mrs Wong was presenting at a relatively young age for the onset of dementia. While her impairment pattern was typical of Alzheimer’s disease and her performance in the visuospatial relationships task (interlocking pentagon in MMSE) appeared intact, her MMSE score of 14/30 was lower than expected at this age, which may reflect a lower cognitive reserve against amyloid pathology. A cholinesterase inhibitor is indicated.

Mrs Wong has little comorbidity or physical health issues that may complicate her care and intervention, and her general good health is a strength. Mrs Wong’s major area of weakness is her impaired short-term memory. Given her high level of independence in ADL, it is likely that her procedural memory remains intact. Her performance on IADL tasks can therefore be enhanced by simplifying tasks. Mrs Wong would also benefit from scheduled social activities or daily routines based on her premorbid interests or lifestyle. While her task initiation would be affected by her poor short-term memory, family carers can leverage her good attention, communication, and language ability and provide her with opportunities to handle hands-on tasks with immediate and step-by-step instructions.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Yip’s son reported noticing memory problems in his mother that had concerned him for about one year, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ○ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. A pacemaker has been implanted. Mrs Yip’s exact education level cannot be ascertained, although his son reported that she has probably more than two years of education.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B₁₂, folate, fasting sugar, fasting lipids, MSU × R/M and culture test, CXR, and ECG were ordered.

Diagnosis

Mild Alzheimer’s disease.

Management

Mrs Yip was recommended to join a centre-based programme with cognitively stimulating activities for 18 months to maintain her cognitive ability and quality of life.

Suggestions for the Primary Care Team

Mrs Yip presented at a typical age of presentation, in her early 80s. Although her MMSE score was lower than expected, the pattern of her impairment was typical of Alzheimer’s disease: orientation to place was better than orientation to time, with impaired delayed recall and intact registration, language, and visuospatial relationships. This pattern indicates early Alzheimer’s disease. With no other information explaining her low MMSE score, the presentation may be related to a lower cognitive reserve against amyloid pathology. It is worth noting here that Alzheimer’s disease is not a homogeneous disease, and there may be interactions between cognitive reserve and pathological processes, with amyloid pathology being only one of the many pathologies. Physicians may consider cholinesterase inhibitors and/or memantine if Mrs Yip has worsening cognition on follow-up. Given that Mrs Yip was easily irritated when being confronted, as noted in the screening assessment, the need for memantine is indicated.

The fact that Mrs Yip was irritable and defensive during the assessment could also suggest possible self-awareness and denial of her cognitive deterioration and functional impairment. Alternatively, it could also indicate a complete lack of insight, when the assessment and interview may be viewed as something ungrounded, causing her annoyance. It is worth investigating further if any reasons can be identified for her irritation and defensiveness to inform further intervention and care strategies. This is also a good example to illustrate how some people living with dementia would react when meeting strangers (the assessor in this case), when he/she may not feel comfortable sharing personal information and feelings. Understanding whether the irritability and defensiveness were limited to the assessment setting or were more pervasive, for example, by using carer-reported questionnaires such as the Neuropsychiatric Interview Questionnaire (NPI-Q) and the Cornell Scale for Depression in Dementia, may provide useful clues to inform care planning.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.13 Findings from Mrs Mak’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Mak’s daughter-in-law reported noticing memory problems in her mother-in-law that had concerned her for about six months, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ○ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Mak has hypertension, hyperlipidaemia, atrial fibrillation, and gout. She is currently on allopurinol, colchicine, digoxin, amlodipine, rivaroxaban, simvastatin, and donepezil 10 mg daily. She has never received any education.

Investigations

ESR, R/LFT, calcium, and vitamin B₁₂ were ordered. All investigations were normal. MRI revealed GCA scale 2, selective prominence in posterior parietal, inferior frontal, and medial temporal lobe atrophy, MTL R = 0.66, L = 0.45, Scheltens R = L = 2–3, ARWMC 3/3, and possible microhaemorrhages.

Diagnosis

Early Alzheimer’s disease.

Management

Donepezil 10 mg daily and an 18-month programme of centre-based cognitively stimulating activities were prescribed. Mrs Mak was also encouraged to have regular exercise, a healthy diet, and mental stimulation, and maintain an active social life.

Suggestions for the Primary Care Team

Mrs Mak’s onset of symptoms presented at a slightly older age, and a lower MMSE score is within expectations. Her pattern of impairment was typical of early Alzheimer’s disease. Her prominent impairment in the Clock Drawing Test and visuospatial relationships (interlocking pentagon on MMSE) was remarkable at this stage, which may be related to her lack of formal education. Mrs Mak’s inability to handle complicated tasks and draw may reflect impaired executive functions, which are common in Alzheimer’s disease, and in this case more prominent in the absence of formal education. It would also be helpful to check her ability in clock reading to understand the nature of the impairment. There is also a significant vascular risk in her comorbidities, and the vascular element may have contributed to further cognitive impairment on top of her Alzheimer’s disease.

Given the significant impairments as shown on MMSE, Mrs Mak’s cognitive decline should have been noticeable much earlier than the six-month period reported by her daughter-in-law. Mrs Mak’s family support would therefore be something worth exploring, for example, whether she is living with a carer and how often family members visit. Identifying existing resources and potential support networks is needed for care planning. While her short-term memory impairment is evident, which is common at this stage of Alzheimer’s disease, her inability to recall her personal history (tapping on her long-term memory) is less compatible. With a depressive mood noted during the clinical interview, there is a possibility that Mrs Mak was unwilling to share her personal history, instead of being unable to recall it. The primary care team is recommended to conduct a more systematic assessment of her depressive mood. Good rapport and sensitivity towards potential mood symptoms would help ascertain or exclude the role of depression in Mrs Mak’s impairments, with implications for the focus of her care and treatment plan.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.14 Findings from Mrs Chan’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Chan’s daughter reported noticing memory problems in her mother that had concerned her for about a year, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Chan has hypertension, diabetes, and a fracture of the right hip (operated on 10 years ago). No family history of psychiatric disorders or dementia was reported. There was no exact information on her education level, except that she probably received less than six months of education.

Investigations

CT scan was ordered.

Diagnosis

Moderate Alzheimer’s disease.

Management

Mrs Chan was recommended to join a centre-based programme with cognitively stimulating activities for 18 months to maintain cognitive and self-care functions; she was also encouraged to have regular exercise, a healthy diet, and mental stimulation, remain socially active, and was recommended to have a community access evaluation. She was provided with an anti-lost device.

Suggestions for the Primary Care Team

Mrs Chan presented at the usual age of symptom presentation for Alzheimer’s disease. Although at age 85, her presentation was leaning towards late presentation, with only one year’s history of significant symptoms, her MMSE score was markedly low and her impairment pattern was compatible with Alzheimer’s disease. It should be noted, however, that her ADLs were largely preserved, and the Clock Drawing Test did not show the usual pattern (of better performance on the copying part than the executive part). This case should be treated clinically as Alzheimer’s disease; physicians can prescribe a cholinesterase inhibitor and memantine for moderate Alzheimer’s disease.

This is a good example illustrating the possible dissociation between cognitive impairment and ADL functional level. In some people living with dementia, especially those who were active and independent in their premorbid daily activities, a good functional level of ADL could be well maintained despite significant cognitive impairment or later-stage dementia, with ADL functions declining much slower than other functions.

The relatively late help-seeking in Mrs Chan’s case should alert the primary care team to explore her social support network. In countries or areas where good public awareness and early assessment services are in place, late help-seeking at a moderate stage may be unusual and suggest insufficient social support. If this is the case, enhancing Mrs Chan’s support network and mobilising community resources to compensate for insufficient support would be an important component of her care planning.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.15 Findings from Mr Lai’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Lai’s daughter reported noticing memory problems in her father that had concerned her for seven to eight years, which appeared to be getting worse in the last two years. Delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ○ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mr Lai has hypercholesterolaemia and ischaemic heart disease with percutaneous coronary intervention. He was followed up at a geriatric medicine outpatient clinic for ischaemic heart disease. No family history of psychiatric disorders or dementia was reported. His exact education level cannot be ascertained, although he probably has less than six months of education according to his daughter.

Investigations

Calcium, ESR, VDRL, vitamin B₁₂, folate, fasting sugar, ECG, and TSH were ordered. Results showed Ca 2.01, TSH 1.19, vitamin B₁₂ 184, Hb 11.7 NcNc, and ESR 25. A CT brain (plain) scan revealed MTL atrophy R = 0.92, L = 0.81, Scheltens score R = 2 L = 2, ARWMC 3/3, and right frontal infarct.

Diagnosis

Mixed dementia.

Management

Mr Lai was recommended to join a centre-based programme with cognitively stimulating activities for 18 months to maintain cognitive functions; he was also encouraged to have regular exercise, a healthy diet, and mental stimulation, manage stress, and maintain an active social life.

Suggestions for the Primary Care Team

Mr Lai presented at a relatively old age, with symptom onset dating back seven or eight years; a lower MMSE score is therefore expected. His impairment pattern is compatible with Alzheimer’s disease: with intact performance in the interlocking pentagon (visuospatial relationships on MMSE) and better performance in clock copying than the executive part of the Clock Drawing Test, which was in keeping with Alzheimer’s disease. The physiological influence of age should be taken into consideration. A low dose of donepezil 2.5 mg can be started, and his progress should be monitored. The presence of irritability should raise attention to possible comorbid depressive symptoms, with a more detailed assessment indicated. Physicians may prescribe memantine for both irritability and mixed dementia. Concomitant use of cholinesterase inhibitors and memantine is suggested for mixed dementia (and moderate to severe Alzheimer’s disease) by some experts (Reference Dickson, Davies, Bevona, Van Hoeven, Factor and Grober1, Reference Barkhof, Polvikoski, van Straaten, Kalaria, Sulkava and Aronen2). Antipsychotics could also be considered when delusional ideas cannot be managed by non-pharmacological means.

While Mr Lai’s cognitive decline was largely observed in his short-term memory, there is evidence that the impairment affects his orientation in time, his awareness of current events, and his long-term memory of his family members. It is therefore worth exploring whether his irritable mood and behaviours may be related to or preceded by the disorientation, which could cause a sense of insecurity. The fact that Mr Lai’s ADL was well maintained suggested intact procedural memory; his impairment in getting dressed probably reflected poor short-term memory and deterioration in attention only, when he might be easily distracted and forget about the current tasks. With strategies to support concentration and short-term memory, Mr Lai’s problem of forgetting to get dressed after a shower could be improved.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.16 Findings from Mr Tam’s Clock Drawing Test.

*A Chinese character ‘3’ was written on the clock face

History Taken with Carer by Primary Care Physician

Mr Tam’s wife reported noticing memory problems in her husband that had concerned her for over a year. Delusional ideations were reported: Mr Tam was suspicious about strangers stealing his money. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mr Tam has hypertension and diabetes. No family history of psychiatric disorders or dementia was reported. His education level cannot be ascertained, although he has probably received more than two years of education.

Investigations

CBP, R/LFT, VDRL, vitamin B₁₂, folate, fasting sugar, fasting lipids, TFT, and a CT scan were ordered.

Diagnosis

Moderate Alzheimer’s disease.

Management

No medication was prescribed as further investigation was pending. Meanwhile, Mr Tam was recommended to join a centre-based programme with cognitively stimulating activities for 18 months to maintain cognitive and self-care functions. Non-pharmacological interventions to manage his distressed behaviours and neuropsychiatric symptoms of dementia were also recommended.

Suggestions for the Primary Care Team

Mr Tam presented at a typical age of symptom onset for Alzheimer’s disease, with a typical pattern of impairment noted in the Clock Drawing Test (worse performance in the clock drawing compared with the clock copying task). It is likely that amyloid load is a major factor in Mr Tam’s pathology. It should be noted, however, that his MMSE score was lower than expected, and impairment in registration is unusual in early Alzheimer’s disease. Also considering the fact that he was already showing difficulties choosing appropriate clothing, the presentations taken together would put Mr Tam in a moderate stage of Alzheimer’s disease, when he would be expected to require assistance in putting on clothes in the next stage. This is a typical case of Alzheimer’s disease going into a moderate stage; a cholinesterase inhibitor should be started. On top of a cholinesterase inhibitor, physicians may consider the use of a low-dose antipsychotic, such as quetiapine, if Mr Tam’s delusional idea does not subside with a cholinesterase inhibitor and non-pharmacological interventions.

Mr Tam’s functional impairment can be understood in the context of moderate Alzheimer’s disease, with the typical presentation of cognitive impairment mostly related to short-term memory, such as orientation to time, following instructions, and continuous calculation. His impairment in the Clock Drawing Test reflected impaired executive functions and related higher cognitive functions, such as abstraction, conceptual thinking, and judgement. These impairments would help explain his inability to choose proper clothes, which involves executive function. With foreseeable further deterioration in ADLs and IADLs, support for his wife should be arranged, and the primary care team should support the identification and engagement of other family members if available. Assessment of the strengths and needs of Mr Tam’s wife would be an important first step in working with them to develop a future care plan.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.17 Findings from Mrs Ko’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Ko’s daughter reported noticing memory problems in her mother that had concerned her for about three years. Delusional ideations were reported: she was suspicious about strangers stealing her money. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Ko had no comorbid chronic illness. No family history of psychiatric disorders or dementia was reported. Her education level cannot be ascertained, except that she has probably received more than two years of education according to her daughter.

Investigations

CBP, ESR, VDRL, calcium, vitamin B₁₂, folate, and CXR were ordered.

Diagnosis

Early Alzheimer’s disease.

Management

Oral rivastigmine 1.5 mg four times a day was prescribed. Mrs Ko was also recommended to join a centre-based programme with cognitively stimulating activities for 18 months to maintain cognitive and self-care functions; she was also encouraged to have regular exercise, a healthy diet, and mental stimulation, and maintain an active social life; non-pharmacological interventions to manage her distressed behaviours and neuropsychiatric symptoms of dementia were also suggested to her carers.

Suggestions for the Primary Care Team

At a typical age of presentation, Mrs Ko’s cognitive impairment pattern was compatible with Alzheimer’s disease: she had an intact performance on the visuospatial relationships (as shown in the interlocking pentagon on MMSE), although findings from the Clock Drawing Test were positive, with greater impairment shown on the clock drawing part compared with the clock copying part. The primary care physician is recommended to start with a low-dose cholinesterase inhibitor and observe her progress. The daily dose of rivastigmine can also be titrated up if Mrs Ko does not experience any side effects.

The primary care team is also advised to investigate further the nature (content) of Mrs Ko’s delusional ideations. If the ideations were likely caused by poor memory (e.g., forgetting where belongings were placed and confusion in money management), caring strategies such as increased environmental cues, reminders, and better organisation of personal belongings may help. On the other hand, although her daughter reported that Mrs Ko had no problem using transportation in the GPCOG, there is nevertheless a high risk of her getting lost, in view of her obvious deficits in orientation as shown on MMSE, impaired community access, and decreased ability to travel as shown in the IADL and staging assessment, suggesting a potential underestimation of risk by the carer. Mrs Ko’s daughter should be advised to use a location tracker on a smartphone or other device to ensure safety.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Chung’s daughter reported noticing memory problems in her mother that had concerned her for about two years. Delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were some additional clinical features to consider for non-Alzheimer’s dementia, which included complex visual hallucinations (seeing mild movement), apraxia in self-care (she cannot dress properly), an inability to control mood (she would use foul language, which was a change in behaviour), overeating (especially sweet food), and early swallowing problems (unable to swallow bigger tablets). Deterioration in the hygiene of her home (e.g., did not clean dishes thoroughly) and personal attire (e.g., wearing shirt unbuttoned) was reported by her daughter. Mrs Chung has a bilateral cataract and she is currently being followed up at a geriatric medicine outpatient clinic for hypertension. No family history of psychiatric disorders or dementia was reported. Her exact education level cannot be ascertained, except that she has probably received less than six months of education according to her daughter.

Investigations

CBP, R/LFT, calcium, VDRL, vitamin B₁₂, folate, fasting sugar, fasting lipids, and ECG were ordered.

Diagnosis

Moderate Alzheimer’s disease.

Management

Donepezil 5 mg daily was prescribed. Mrs Chung was also recommended to join a centre-based programme with cognitively stimulating activities for 18 months for the maintenance of cognitive abilities and quality of life.

Suggestions for the Primary Care Team

Mrs Chung presented at a slightly older age, with a low MMSE score and typical cognitive impairment pattern in keeping with Alzheimer’s disease. It should be noted, however, that her ADLs were already quite impaired on presentation, and her physical functioning was more impaired. She showed some frontal lobe features on top of the typical features of Alzheimer’s disease. These presentations could suggest a frontal variant of Alzheimer’s disease: the primary care team should be aware that presence of frontal symptoms can also occur in Alzheimer’s disease. The treatment remains the same as in Alzheimer’s disease without frontal lobe features. A trial of cholinesterase inhibitors is indicated, although the primary care physician should watch out for worsening in the behavioural symptoms, and adjust the medication when needed. Selective serotonin reuptake inhibitors can be considered when frontal lobe features are florid.

In this case, the physical deterioration in old age further affected Mrs Chung’s ADL/IADL performance. It should also be noted that, although most of her cognitive functions were affected, she was still good at communication (language) and attention. These represent her strengths, which are worth leveraging to promote continued participation in social activities to maintain a stable mood and cognition. Although the quality of her household and self-care tasks was reported to have deteriorated, Mrs Chung still has motivation, which should be maintained: carers can be advised to focus on the process of her participation and use of functions, instead of focusing on the quality and outcomes of her performance (e.g., whether the washed dishes are cleaned thoroughly).

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.18 Findings from Mrs Ho’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Ho’s daughter reported noticing memory problems in her mother that had concerned her for about a year. Delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Ho has hypertension, hypercholesterolaemia, and bilateral cataract (operated on). No family history of psychiatric disorders or dementia was reported. Her exact education level was unknown, although her daughter reported that she had probably received no formal education. Mrs Ho lived alone.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B₁₂, folate, fasting sugar, fasting lipids, MSU × R/M & culture test, ECG, and T4 were ordered. A CT brain (plain) scan was ordered.

Diagnosis

Mild Alzheimer’s disease.

Management

No medication was prescribed as further investigation was pending. Mrs Ho was recommended to join centre-based cognitively stimulating activities for 18 months for the maintenance of cognitive abilities and quality of life.

Suggestions for the Primary Care Team

This is a typical case of early Alzheimer’s disease. Despite her low MMSE score, Mrs Ho presented at a typical age of symptom onset, with an impairment pattern in keeping with Alzheimer’s disease, as suggested in the differential Barthel Index and Lawton IADL scores and Clock Drawing Test results, taking into consideration her lack of formal education. The low MMSE score therefore possibly suggested a low brain reverse against the amyloid load. A low-dose cholinesterase inhibitor can be tried.

In Mrs Ho’s case, although her deterioration appeared obvious according to cognitive screening test results, her general functions in daily living activities were good. Apart from a lack of formal education, which may explain part of the cognitive performance, this pattern may also be related to her premorbid lifestyle with a high level of independence in self-care. With relatively good physical health and a low cognitive requirement for daily activities, Mrs Ho’s ADL and IADL functioning is largely satisfactory despite her cognitive impairment. At this stage, only minimal or supervisory support is needed, which her daughter has been handling.

However, as her disease progresses, there will be increasing risks in ADL and IADL tasks with Mrs Ho living alone; her deficits in orientation also pose a risk of her getting lost. The primary care team should work with Mrs Ho’s daughter to explore options that can ensure safety, which would also enable Mrs Ho’s continued participation in self-care, as this is her strength that should be enhanced and supported. The primary care team should also discuss with Mrs Ho and her daughter key intervention goals, including the main concerns that have prompted the help-seeking, such as advice for the misplacement of valuable items.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.19 Findings from Ms Wong’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Wong’s daughter reported noticing memory problems in Ms Wong that had concerned her for about a year. Delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Wong has hypertension and dyslipidaemia. No family history of psychiatric disorders or dementia was reported. She did not receive any education.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Wong had a blood pressure reading of 134/70 mm Hg. No CVS or CNS findings.

Diagnosis

Mild to moderate Alzheimer’s disease. No mood symptoms.

Management

Rivastigmine transdermal system 4.6 mg daily was prescribed. She was also recommended to join a specialised day care service for two days per week, with a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

Ms Wong presented at a slightly older age, with 12 months of symptom presentation. Her impairment pattern was typical (e.g., worse performance on the drawing part of the Clock Drawing Test, but improving on the copying part). The short time from symptom presentation to the current impairment level may suggest an aggressive amyloid load. In the case of deteriorating cognition, physicians may consider escalating the dose of cholinesterase inhibitors or adding memantine. Depending on the staging criteria used and whether assistance in getting dressed is needed (i.e., dressing apraxia), this can be a case of mild or mild to moderate Alzheimer’s disease.

A point to note in this case is that very often clinical rating scales rely heavily on carers’ impressions: with the Clinical Dementia Rating, for example, half of the assessment ratings were based on the carers’ subjective report. In this case, the primary care team should pay attention to the possibility of a discrepancy between carers’ subjective reports and objective assessment findings: the cognitive and functional assessments for Ms Wong appeared consistent with a moderate stage of dementia. This did not match well with merely 12 months of significant deterioration according to the carer’s report, and the Clinical Dementia Rating of 0.5 was heavily based on her daughter’s impression. It is possible that Ms Wong’s symptoms have occurred for more than 12 months, although a low awareness of the early signs and symptoms or infrequent interaction might have caused a delay in symptom identification. The primary care team is therefore advised to explore the carer’s awareness and understanding of dementia, provide education as needed, and assess the level of support available within Ms Wong’s family.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.20 Findings from Ms Ng’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Ng’s husband reported noticing memory problems of his wife that had concerned him for about two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Ng has diabetes and hypertension. No family history of psychiatric disorders or dementia was reported. She has received primary education. She plays card games with neighbours every day.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Ng had a normal blood pressure of 117/69 mm Hg. No other CVS or CNS findings.

Diagnosis

Alzheimer’s disease.

Management

Rivastigmine transdermal system 4.6 mg daily was prescribed. Ms Ng was also recommended to join a specialised day care service for two days per week, with a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

Ms Ng presented at a slightly younger age of symptom onset for Alzheimer’s disease, and her MMSE score was lower than expected for her age. Nevertheless, the impairment pattern (e.g., worse performance in clock drawing than clock copying in the Clock Drawing Test) was typical of Alzheimer’s disease. The lower MMSE score and slightly younger age of presentation may reflect a more aggressive amyloid load. Physicians may consider escalating the dose of rivastigmine in the event of worsening cognitive function.

Considering the typical pattern of cognitive deterioration in Alzheimer’s disease, with higher cognitive functions (e.g., executive functions) and short-term memory often being impacted early, Ms Ng’s overall functional levels were satisfactory. Her strengths include insight into her cognitive decline, which can be used as a motivating factor to encourage participation in various cognitively stimulating activities and to ensure compliance with treatment and interventions. The fact that she plays card games with neighbours every day is also a strength, suggesting an active social life and a potential support network, which should be maintained and enhanced. With the new routine of going to a day care centre two days per week, care should be taken to ensure the existing social connection with her neighbours is not disrupted. The primary care team should also be sensitive to the possible negative psychological impacts associated with self-awareness of deterioration, which may include anxiety, depression, and adjustment problems. Managing Ms Ng’s and her family’s realistic expectations about intervention outcomes, while fostering a sense of hope and control, would be important elements in her care.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.21 Findings from Ms Kong’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Kong’s granddaughter reported noticing memory problems in her grandmother that had concerned her for about two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Kong has hypertension. She has gout and would have foot pain occasionally, although she can walk unaided. No family history of psychiatric disorders or dementia was reported. She did not receive any education.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Kong had a blood pressure reading of 130/76 mm Hg. No other CVS or CNS findings.

Diagnosis

Alzheimer’s disease.

Management

Rivastigmine transdermal system 4.6 mg daily was prescribed. Ms Kong was also recommended to join a specialised day care service for two days per week, with a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

This is a typical case of early Alzheimer’s disease, in which a cholinesterase inhibitor is indicated. Ms Kong presented at a typical age of symptom onset for Alzheimer’s disease, with a usual duration of retrospective onset of symptoms dating back to around two years ago. Her MMSE score was lower than expected, although the impairment pattern was in keeping with Alzheimer’s disease, with the Clock Drawing Test also showing a pattern of worse performance in the drawing part than the copying part. Her Barthel Index score was lower than expected for her stage of Alzheimer’s disease and may reflect physical frailty. The primary care team should pay attention to the interaction between physical and cognitive frailty in the presentation of Alzheimer’s disease.

While Ms Kong’s functional level in general reflected the common functional profile of people with Alzheimer’s disease, her self-care impairment appeared to be worse than expected for her stage. The primary care team should investigate further the underlying cause(s) of the specific impairments, paying attention to possible motivational factors, physical frailty, premorbid daily habits, and roles. The Clinical Dementia Rating results suggested a moderate stage, which was based heavily on the carer’s subjective report, and the primary care team may also explore the possibility that Ms Kong has become accustomed to being cared for by others, which could result in a lower level of functional performance than her actual functioning potential. A scheduled daily routine may be considered, which would also help prevent or reduce confusion in the later stages of the disease.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Ms Cheung’s daughter-in-law reported noticing memory problems in her mother that had concerned her for about two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Cheung was reported to have depressive symptoms by her family member. She is currently on a calcium supplement. No family history of psychiatry disorders or dementia was reported. She did not receive any education. She was living alone, even though she was unable to take care of herself.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Cheung’s blood pressure was 142/78 mm Hg. No other CVS or CNS findings.

Investigations

CBP, ESR, R/LFT, calcium, VDRL, vitamin B₁₂, fasting sugar, MSU × R/M, and culture test were ordered.

Diagnosis

Moderate Alzheimer’s disease with a depressive mood.

Management

Ms Cheung was recommended to join a specialised day care service for two days per week, with a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

Ms Cheung’s presentation was compatible with moderate Alzheimer’s disease. She presented at a typical age of symptom onset for Alzheimer’s disease, with two years of symptom presentation in retrospect. Her MMSE results showed a usual pattern of impairment. However, her physical functioning was quite impaired, and she was unable to take care of herself. In view of the presence of an obvious depressive mood, depression should be treated at this stage. Ms Cheung has probable dementia and depression, a combination that is not uncommon in older people. In this case the potential interaction between depression and Alzheimer’s disease, and the timing of their respective onsets, should be noted. In Ms Cheung’s case, if the symptoms of depression and those of Alzheimer’s disease occurred within two years of each other, the two conditions may have shared neural substrates and could be part of the same disease process. Physicians can prescribe both cholinesterase inhibitors and antidepressants in one go. Alternatively, physicians can consider treating her depression first, while paying attention to any changes in her cognitive symptoms, and use a concomitant cholinesterase inhibitor if there is no improvement in cognition. The primary care team should also monitor Ms Cheung’s weakness of the limbs and check for abnormalities in blood tests.

Ms Cheung’s ADL was worse than expected, which may be attributable to her depressive mood and low motivation. It may also be a result of other physical discomforts or weakness instead of her cognitive impairment. While Ms Cheung may be unfit to be living alone and social support is obviously needed to maintain her living in the community, it is possible that she may not be receptive to the arrangement of having a carer or domestic helper at home. In that case, other suitable long-term care services and facilities in the community should be explored. The primary care team should discuss the options with the family, providing advice that balances the needs of Ms Cheung and the family carer(s), after a detailed assessment considering the interplay between cognition, mood, and physical factors.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Ms Yau’s son reported noticing memory problems in his mother that had concerned him for about half a year, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Yau has diabetes, hypertension, and gout. No family history of psychiatric disorders or dementia was reported. She did not receive any education. She was living alone and able to walk independently with a stick.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Yau’s blood pressure was 160/70 mm Hg. No other CVS or CNS findings.

Diagnosis

Mild to moderate Alzheimer’s disease.

Management

Ms Yau was recommended to join a specialised day care service for two days per week for two years, with a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

What is notable in this case is the relatively short time (approximately six months) of symptom presentation before help-seeking by a carer, which is unusual in Alzheimer’s disease given the often insidious nature of cognitive and functional decline. While treating Ms Yau as having mild to moderate Alzheimer’s disease, with the use of a cholinesterase inhibitor, neuroimaging such as MRI is indicated to look for other comorbid conditions and investigate if this is a case of pure Alzheimer’s disease. It is not uncommon for cognitive deterioration to go unnoticed by family carers, especially when the cognitive deterioration or signs and symptoms of dementia may be masked by a high level of independence in ADL or IADL: in Ms Yau’s case, her high functional status appeared to be relatively unaffected by her cognitive impairment. Her low education level may also have lowered the expectations for her cognitive performance by her carers. Therefore, it is also possible that Ms Yau’s cognitive symptoms had an onset much earlier than six months, although the help-seeking was delayed due to symptom masking and low expectations combined with a low level of awareness.

Good self-care ability despite cognitive impairment is commonly seen, especially among those who have a long-standing independent living style and reside in a familiar environment and community, with well-established habits and routines. If these factors remain unchanged, Ms Yau will be able to continue to take good care of herself for a long period of time, which is a strength and a good prognostic factor. The primary care team should nevertheless pay attention to potential safety concerns: although Ms Yau currently has no problem using transportation and is able to go out in familiar places, there is a risk of her getting lost in the future. She should therefore be accompanied when going out and/or have a location-tracking device in place to minimise such a risk.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.22 Findings from Mr Hung’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Hung’s wife reported that she did not notice any memory problems in her husband. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ○ Remembering recent events

• ○ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mr Hung has asthma and benign prostatic hyperplasia. He is currently on prazosin 1 mg daily, salbutamol two puffs three times a day, beclometasone dipropionate two puffs twice a day, and ipratropium bromide two puffs three times a day. No family history of psychiatric disorders or dementia was reported. He received education to P.6 (approximately six years of education). He was able to walk independently with a cane. He has limited social activity except for sitting outside a nearby supermarket to chat with friends.

Physical Examination Findings

General examination revealed no affect or hygiene problem. No CVS or CNS findings.

Investigations

No investigation was ordered as Mr Hung refused blood taking or a CT brain scan.

Diagnosis

Early Alzheimer’s disease.

Management

Rivastigmine transdermal system 4.6 mg daily was prescribed. Mr Hung was also recommended to join a specialised day care service for two days per week for two years, with a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

This is a typical case of mild Alzheimer’s disease. Mr Hung presented at a common age of symptom onset for Alzheimer’s disease, and his impairment pattern was also typical. Although he could not complete the Clock Drawing Test due to hand tremor, there was evidence of impaired executive function and abstract thinking, and his assessment results were largely in keeping with the usual profile of early Alzheimer’s disease. What can be noted in this case is that Mr Hung has chronic obstructive pulmonary disease, and this case illustrates how the chronic illness may aggravate and complicate his cognitive impairment. In the same vein, the intervention and care plan should therefore focus also on maintaining a stable physical condition for Mr Hung, which can be equally important as intervening for his cognitive functions.

This case also illustrated the potentially important role of social workers or other personnel in detecting cognitive impairment in the community. In Mr Hung’s case, his wife might not have been able to recognise the signs and symptoms of early dementia due to low awareness: relying on the Clinical Dementia Rating or GPCOG alone, the primary care team may not have been able to detect the cognitive impairment until a later stage. While public education would help to promote early detection, education targeting potential ‘gatekeepers’ other than family carers (e.g., a social worker in this case) is also an important strategy and can be part of a triage system for cases needing diagnosis and further intervention in a dementia-friendly community. Such needs may be particularly profound for people living alone or with an older spouse only (who may also need care and support).

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.23 Findings from Mrs Ko’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Ko’s daughter-in-law reported noticing memory problems in Mrs Ko that had concerned her for about three years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

Mrs Ko may have apraxia in self-care, which might be a clinical feature to consider for non-Alzheimer’s dementia. Mrs Ko has hypertension. No family history of psychiatric disorders or dementia was reported. Her exact education level cannot be ascertained, although she probably had less than six months of education.

Investigations

CT brain and MRI scans revealed cerebral atrophy with atrophic changes in medial temporal lobe.

Diagnosis

Alzheimer’s disease.

Management

Donepezil 5 mg daily was prescribed. Mrs Ko was recommended to join an 18-month, centre-based programme with cognitively stimulating activities for the maintenance of cognitive function and quality of life; carer education was also provided with advice for adjusting activities to support Mrs Ko’s continued participation and engagement in daily activities.

Suggestions for the Primary Care Team

Mrs Ko presented at a common age of symptom onset for Alzheimer’s disease, with a typical impairment pattern: her performance was impaired in higher cognitive functions (such as executive function) and short-term memory, intact in attention and language, and she was able to follow instructions. Her ADL performance was much better than her IADLs. These presentations are compatible with the usual profile of Alzheimer’s disease, while her low Barthel Index score would put her in the moderate stage. Mrs Ko’s MMSE score was on the low side, with a slightly longer-than-usual delay in help-seeking (three years, compared to a median of one year in the same early intervention service). The reasons for the delay should be explored, including low awareness of the carer or infrequent interaction, which should be addressed in the care plan (e.g., carer education and family/social support).

Mrs Ko was able to maintain her ADL functioning with only minimal assistance needed, which should be considered her strength. Equipping her carers with the suitable skills to engage Mrs Ko in daily living activities should be a priority at this stage, which would help to reduce the risk of confusion and the development of distressed behaviours and neuropsychiatric symptoms of dementia: the latter may involve the rejection of care and refusal of ADL tasks, for example, refusal of bathing.

Apraxia in self-care is common in moderate Alzheimer’s disease. In Mrs Ko’s case, the apraxia may be linked with temporal lobe degeneration, although this is less likely considering that her ADLs were not grossly impaired. It may nevertheless be worth further investigation and clarification to inform her care plan.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.24 Findings from Mrs Lau’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Lau’s daughter reported noticing memory problems in her mother that had concerned her for three to four years, although no delusional ideations were reported. No distressed behaviours and neuropsychiatric symptoms of dementia were noted. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Lau has macrocytic anaemia and left carotid bruit and was having follow-up consultations at a geriatric medicine outpatient clinic in hospital for her anaemia. No family history of psychiatric disorders or dementia was reported. She has never received any education and was noted to have poor social support.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B₁₂, and folate were ordered. All investigations were normal except for globulin 40, B₁₂ 178, and TSH 0.58. MRI revealed MTLA R = 7.8, L = 8.7, Scheltens score R = L = 2, ARWMC 3/3, and GCA scale 2.

Diagnosis

Early Alzheimer’s disease with small vessel disease.

Management

A daily dosage of donepezil 5 mg and mecobalamin 500 μg was prescribed. She was also recommended to join a centre-based programme with cognitively stimulating activities for 18 months to maintain cognitive functions and quality of life and was encouraged to have regular exercise, a healthy diet, and mental stimulation, manage stress, and develop an active social life.

Suggestions for the Primary Care Team

This is a case with the typical impairment pattern of early Alzheimer’s disease. Mrs Lau showed intact visuospatial ability on MMSE (interlocking pentagon), but her Clock Drawing Test was positive, suggesting an early stage of dementia with impaired executive functions and other higher cognitive functions. Her short-term memory was beginning to show impairment, although her functioning was still satisfactory in general. Physicians should note that white matter disease is a known risk factor for Alzheimer’s disease (3). In Mrs Lau’s case, there is a significant comorbidity of anaemia; although her CBC was normal, considering that she is being followed up at a geriatric clinic for anaemia, there are uncertainties regarding the contribution of white matter pathology to her cognitive impairment, which needs to be clarified.

Considering that her symptoms were first noticed three to four years ago, help-seeking in Mrs Lau’s case was a little later than usual (compared to a median of one year in the same early intervention service). The best time to equip Mrs Lau with skills to self-manage the insidious deterioration, which is during the symptom onset phase, would have been missed; nevertheless, she was still quite independent in her ADLs and IADLs. The primary care team can make use of her remaining memory and cognitive functioning ability and try to use reminders, cues, and adaptive aids in maintaining her independence, such as using an alarm clock with an audio reminder function for daily scheduling and organising her belongings in a way that items can be easily found. This is also a good time to discuss with Mrs Lau and her family a future care plan, although the team should pay attention to her mood and any post-diagnostic depressive and/or anxiety symptoms that may occur.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Hung’s husband reported noticing memory problems in his wife that had concerned him for about three years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Hung has gout and hypercholesterolaemia. An MRI scan performed the previous year revealed small vessel disease and mild cortical atrophy, with an MTA score of 2. No family history of psychiatric disorders or dementia was reported. Her education level was unclear, although it is known that she had received more than two years of education.

Investigations

CBP, R/LFT, calcium, VDRL, vitamin B₁₂, folate, ECG, and TSH were ordered.

Diagnosis

Early Alzheimer’s disease.

Management

Mrs Hung was recommended to join a centre-based programme with cognitively stimulating activities for 18 months to maintain her cognitive function and quality of life. She was also encouraged to have regular exercise, a healthy diet, and mental stimulation, manage stress, and maintain an active social life.

Suggestions for the Primary Care Team

Mrs Hung is relatively young for the presentation of symptoms of Alzheimer’s disease. While her impairment pattern was typical of Alzheimer’s disease, the primary care team can also watch out for symptoms that may suggest other types of dementia in subsequent follow-ups. For Alzheimer’s disease to present at this younger age around the 70s, it is possible that a heavy amyloid load is present, which can no longer be masked by the person’s cognitive reserve. Meanwhile, Mrs Hung’s medication treatment can start off with a low dose of cholinesterase inhibitor, such as donepezil 2.5 mg daily, while the primary care team monitors her progress.

Mrs Hung has quite satisfactory performance in various cognitive functions, except for an obvious impairment in short-term memory. Her ADL was also good and should be maintained as far as possible: the primary care team could equip her carers with appropriate caring skills for ADL maintenance, for example, by providing verbal reminders or guidance when Mrs Hung became ‘clumsier’ in her daily living activities, instead of discouraging her attempts and providing direct help with all ADL tasks too early. Mrs Hung’s IADL performance was worse than expected for her age and disease stage; one possible reason is that she might have been well cared for by her husband over a long time, which could have built up a habit of relying on others; in such a case, the care could become a barrier to active participation, leading to a lower level of performance than her actual ability or potential, or ‘excess disability’. The primary care team should guide her husband on how to empower and increase Mrs Hung’s interest and engagement in IADL tasks. The team should also assess carer stress and the mood of Mrs Hung’s husband and prepare him for the foreseeable increase in his caring role and task demands in the future. The possibility that it may eventually become overwhelming for him to be handling all care by himself should be mentioned. This is an important stage to start a family review and planning for supportive services and future care.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.25 Findings from Mrs Lai’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Lai’s son reported noticing memory problems in his mother that had concerned him for about one to two years. Delusional ideations were reported. Compared to two years ago, using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Lai has hypertension, bilateral cataract (right eye operated), hysterectomy, lumbar spinal degeneration, and osteoarthritis of the knee. No family history of psychiatric disorders or dementia was reported. There is no clear information about her education level, although she probably has received more than two years of education. Mrs Lai lives alone.

Investigations

CBP, ESR, R/LFT, calcium, VDRL, vitamin B₁₂, folate, fasting sugar, fasting lipids, CXR, and ECG were ordered. CT brain (plain) scan revealed cerebral atrophy, changes in small vessel ischemia, a GCA score of 2, and an MTA score of 1.

Diagnosis

Early Alzheimer’s disease.

Management

Aspirin 80 mg daily, famotidine 20 mg daily, and donepezil 5 mg daily were prescribed. She was recommended to join a centre-based programme with cognitively stimulating activities for 18 months for the maintenance of cognitive functions and quality of life.

Suggestions for the Primary Care Team

This is a case with a typical presentation of early Alzheimer’s disease. The primary care physician should note that, although small vessel disease was present on the CT scan, it does not automatically equate with mixed dementia. Considering her typical age of presentation, her MMSE score was lower than expected; this could be due to the small vessel disease accelerating or intensifying Alzheimer’s disease. Cholinesterase inhibitors can be prescribed in the event of declining cognition in subsequent follow-ups. The primary care team can also investigate further the detailed results and recommendations from the assessment done one year ago and explore the motivation for the current repeated assessment. The motivation would suggest key areas of concern and thus possible priorities in management and care planning.

Mrs Lai’s community living ability appeared to be much higher than expected given her poor cognitive performance. It is a strength that, at present, her functional level can be maintained at a satisfactory level. Her premorbid lifestyle may be a factor contributing to her current high daily functioning. However, considering that Mrs Lai is living alone with cognitive impairment, which will worsen further, safety precautions are important while supporting Mrs Lai to continue performing the existing ADL and IADL tasks. Supportive tools or devices such as location-tracking devices, audio cues, and reminders (e.g., for turning off a fire/water tap) should be used. Carers may also provide reminders by phone calls and seek help from shopkeepers in the neighbourhood to manage her behaviour of repeatedly buying the same items.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.26 Findings from Mrs So’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs So’s daughter reported noticing memory problems in her mother that had concerned her for over a year. Delusional ideations were reported. Distressed behaviours and neuropsychiatric symptoms of dementia were reported: Mrs So was frequently suspicious about her children stealing her money, and she appeared to have a depressive mood. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs So has diabetes and hyperlipidaemia. No family history of psychiatric disorders or dementia was reported. There was no clear information on her education level, although it is likely that she received less than six months of education.

Investigations

ECG and CT brain (plain) scan were ordered.

Diagnosis

Mild dementia with irritability, anxiety, and depression.

Management

No medication was prescribed while awaiting the work-up results. Mrs So was recommended to join a centre-based programme with cognitively stimulating activities for 18 months to maintain cognitive, quality of life, and self-care functions; she was encouraged to have regular exercise, a healthy diet, and mental stimulation, and maintain an active social life.

Suggestions for the Primary Care Team

This is a case of mild Alzheimer’s disease with depression. Primary care physicians should consider treating both conditions, using a cholinesterase inhibitor and a selective serotonin reuptake inhibitor. Mrs So’s cognition, general functioning, and mood should be monitored. A multidisciplinary team can help in this difficult scenario with a relatively more complex disease profile. Mrs So’s social background, especially her relationship with family members, should be further explored. This should include her family’s reaction to her suspicion about them stealing her money and whether any psychosocial factors contributing to her depressive mood can be identified. The temporal sequence between dementia and depression is to be elucidated, which will inform treatment focus.

The younger-than-usual age of presentation in this case should also be noted. Mrs So presented with distressed behaviours and neuropsychiatric symptoms of dementia, delusion, and depression. The MMSE score is low, although a typical impairment pattern in keeping with Alzheimer’s disease was noted. Visuospatial relationships is also impaired as shown in both MMSE (interlocking pentagon) and the Clock Drawing Test. These significant impairments may be a result of the complex interplay between Alzheimer’s disease pathology, depression, and the content of the delusion. For example, the depressive mood and delusional ideation may be interrelated, with the possibility of the delusion about children stealing money from her triggering the depressive mood. If the primary care team could identify a root cause of the depressive mood and/or the delusional ideation, interventions to address the underlying cause may be possible (e.g., strategies to ensure a sense of security with her money), which could potentially lead to improvement in Mrs So’s general functional performance. If non-pharmacological intervention and strategies targeting the root cause are not effective, physicians may consider the use of neuroleptics and referral for specialist attention.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.27 Findings from Mrs Lam’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Lam’s son reported noticing memory problems in his mother that had concerned him for a few years. No delusional ideations were reported. According to her son, she loses her temper easily and becomes suspicious of others. Her mild depression could possibly be linked to her recent bereavement. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Lam has received diagnoses of diabetes and depression. She is currently on a daily dosage of metformin. No family history of psychiatric disorders or dementia was reported. She has never received any formal education.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B₁₂, folate, and TSH were ordered. Results showed ESR 67 and normal in CBP, R/LFT, Ca/P, TSH, and vitamin B₁₂. MRI revealed MTL R = 0.67, L = 0.59, Scheltens R = 2 L = 3, ARWMC 1/3, and right frontal/occipital microhaemorrhage.

Diagnosis

Mild Alzheimer’s disease with small vessel disease and mild depression.

Management

Rivastigmine transdermal system 5 mg daily was prescribed. Mrs Lam was encouraged to engage in physical, social, and cognitively stimulating activities. She was also recommended to join a centre-based programme with cognitively stimulating activities for 18 months to maintain cognitive functions and quality of life, although she refused the offer.

Suggestions for the Primary Care Team

This is a case presenting at a relatively younger age with a low MMSE score, with an impairment pattern typical of early Alzheimer’s disease. The intact visuospatial ability shown in the interlocking pentagon task in MMSE versus impairment elicited on the Clock Drawing Test provided clues to a diagnosis of Alzheimer’s disease. Depression and diabetes are both risk factors for dementia (Reference Livingston, Huntley and Sommerlad4). Their treatment should be optimised, on top of a prescribing cholinesterase inhibitor, as part of her management. In view of Mrs Lam’s mild depression, attention should be given to psychosocial factors contributing to it, while both the cognitive impairment and depression should be treated. Bereavement counselling and psychotherapy may be appropriate, even in the context of dementia and cognitive impairment.

Mrs Lam’s cognitive assessment results showed that her cognitive impairment is still in its early stages. The primary care team can investigate further regarding the timing of the onset of the signs and symptoms of cognitive impairment in relation to her grieving. Possible relationships may include apparent cognitive deterioration due to depressive mood and low motivation; dementia triggered by a depressive episode; and depressive mood as a reaction to the delusional ideation caused by dementia. Her refusal of the centre-based service may also be reflective of her depressive mood, and the primary care team should consider ways to lower this resistance or barrier. By understanding the nature of their relations, an individualised intervention approach could be developed.

In Mrs Lam’s case, it is also of note that the GDS-15 failed to pick up her depressive mood, which is not uncommon: the person may be unwilling to express their moods and feelings to a professional in a cognitive/memory clinic setting with little pre-existing rapport. For the early assessment team, the lesson here is to be sensitive and observant during the interview/assessment process, gather collateral information as far as possible, and ensure alliance and rapport during the session, while using standardised assessments as a tool to facilitate but not determine clinical judgement and discretion.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.28 Findings from Ms Law’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Law’s daughter reported noticing memory problems in her mother that had concerned her for about one year, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Law has atrial fibrillation, bilateral varicose veins, and a total knee replacement. She was noted to have lower limb weakness and is an outdoor wheelchair user. She was currently on digoxin 0.0625 mg daily, triamterene-hydrochlorothiazide daily, pantoprazole 20 mg daily, and apixaban 2.5 mg twice a day. No family history of psychiatric disorders was reported, although it is reported that Ms Law’s sister has been diagnosed with dementia. She did not receive any education.

Physical Examination Findings

General examination revealed no affect or hygiene problem. In CVS examination, atrial fibrillation was found. No CNS findings.

Investigations

CBP, R/LFT, calcium, VDRL, vitamin B₁₂, fasting sugar, and fasting lipids were ordered. MRI investigation revealed severe global cortical atrophy.

Diagnosis

Alzheimer’s disease.

Management

Donepezil 2.5 mg daily was prescribed. Ms Law was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and to maintain quality of life.

Suggestions for the Primary Care Team

Considering that Ms Law has atrial fibrillation on digoxin, starting cholinesterase inhibitors at a low dose, such as donepezil 2.5 mg daily, is advisable, while observing the potential side effects of cholinesterase inhibitors. The most common side effects of cholinesterase inhibitors are gastrointestinal upset (such as reduced appetite) and bradycardia. Physicians should be aware of the patient’s baseline heart rate before prescribing cholinesterase inhibitors. Extra precaution is warranted in patients who are taking rate-controlling agents, such as digoxin, beta-blockers, and calcium channel blockers.

Ms Law presented at the age of 90 years, which is slightly older than the most common age of presentation. While her symptom pattern was compatible with Alzheimer’s disease, hippocampal sclerosis (versus amyloid) pathology may be involved. Age-related cognitive frailty may play an important part in her cognitive impairment, although management as in Alzheimer’s disease would be appropriate. The physical weakness and old age in this case should be considered in the care plan, including the assessment of physical discomfort, such as pain and soreness, to avoid further complications. Given the interaction between physical health and cognition, addressing physical discomfort and problems would often also have an effect on cognitive performance. The primary care team may also work with Ms Law and her family to target optimising moods and physical health, such as by encouraging participation in social gatherings, reminiscences, and other group activities that focus not only on cognitive enhancement, but are also enjoyable and promote positive experiences. Increased daytime engagement may also improve Ms Law’s sleep.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.29 Findings from Mr Ho’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Ho’s daughter reported noticing memory problems in Mr Ho that had concerned her for about 12 months, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There was an additional clinical feature to consider for non-Alzheimer’s dementia: Mr Ho has early speech problems (which could potentially suggest primary progressive aphasia or frontotemporal dementia), without history of stroke or space-occupying lesions (SOLs). Mr Ho has hypertension, atrial fibrillation, an old cardiovascular accident, chronic obstructive pulmonary disease, and chronic kidney disease. He is currently on digoxin, warfarin, isosorbide dinitrate, prazosin, oxybutynin hydrochloride, and enalapril maleate. No family history of psychiatric disorders or dementia was reported. He has received primary education to P.4 (approximately four years of education).

Physical Examination Findings

General examination revealed a hygiene problem with a urine smell, although no affect problem was noted. Atrial fibrillation was found on CVS. No CNS findings.

Investigations

CBP, ESR, R/LFT, calcium, VDR, vitamin B₁₂, fasting sugar, fasting lipids, MSU × R/M & culture test, ECG, folate, and TSH were ordered. CBP, ESR, calcium, fasting sugar, MSU × R/M and culture test, folate, and TSH were normal. LFT creatinine 174. Fasting lipids: TCHL 6.0, TG 1.2, HDL-C 1.6, and LDL-C 3.88. CT brain (plain) scan revealed old infarct and chronic ischaemia.

Diagnosis

Mixed dementia (Alzheimer’s disease and vascular dementia) with comorbid urinary tract infection, renal impairment, and aortic regurgitation.

Management

Donepezil 5 mg daily was prescribed. Mr Ho was recommended to join a specialised day care service for two days per week, to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration, and to maintain quality of life.

Suggestions for the Primary Care Team

Mr Ho has post-stroke cognitive impairment, with early speech problems. Considering that Mr Ho has got lost twice with an MMSE score of 14/30 and IADL dependency, there appeared to be some inconsistency with results in the Clinical Dementia Rating, the latter of which suggested only questionable dementia. The primary care team should pay attention to potential inconsistencies between the informant report and other findings, especially as the Clinical Dementia Rating depends heavily on the informant report, and physicians should exercise clinical discretion. In this case, it is less likely that Mr Ho’s current level of deterioration has only begun within 12 months, and the possibility that some early signs and symptoms might have gone unnoticed should be revisited in subsequent follow-ups. Should this be the case, the relatively short duration of symptom onset could be an artefact, due to low awareness in the carer, which would also explain the findings from the Clinical Dementia Rating as it relies heavily on the carers’ subjective report.

Physicians should pay attention to Mr Ho’s response to donepezil. Mr Ho is on oxybutynin, which is an anticholinergic agent. The most common indication of anticholinergic agents in older people is an overactive bladder. Physicians should watch out for urinary symptoms after prescribing cholinesterase inhibitors and review the indication for oxybutynin.

Although the assessment results did not suggest depression, considering the fact that Mr Ho had had a stroke, the primary care team should pay attention to possible depressive symptoms that may arise/manifest in future follow-ups. For care planning, one area to focus on is to equip carers with knowledge and skills, particularly in terms of awareness and understanding of the foreseeable disease progression. Safety precautions, such as a sensor and alarm to prevent Mr Ho from leaving home unaccompanied, and a location-tracking device should be in place, and physical strength training to prevent falls is recommended.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.30 Findings from Mr Yue’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Yue’s daughter reported noticing memory problems in her father that had concerned her for about three years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mr Yue has diabetes, hypertension, old myocardial infarction/ischaemic heart disease (MI/IHD), dyslipidaemia, and a history of severe head injury with fractured left occipital bone, acute subdural haemorrhage bilateral, and bilateral frontal contusion three years ago. He is currently on enalapril 15 mg daily, gliclazide 160 mg twice a day, metformin 500 mg twice a day, vildagliptin 50 mg in the morning, simvastatin 20 mg nocte, aspirin 80 mg daily, pantoprazole 40 mg daily, and nitroglycerin sublingual PRN. No family history of psychiatric disorders or dementia was reported. He did not receive any education.

Physical Examination Findings

General examination revealed no affect or hygiene problem. No CVS or CNS findings.

Investigations

CBP, R/LFT, vitamin B₁₂, and fasting lipids were ordered. CBP, R/LFT, and fasting lipids were normal. Result of vitamin B₁₂ was pending. CT brain scan would be repeated.

Diagnosis

Alzheimer’s disease and traumatic brain injury.

Management

Rivastigmine transdermal system 5 mg daily was prescribed. Mr Yue was also recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain quality of life.

Suggestions for the Primary Care Team

Mr Yue’s case is a good illustration of Alzheimer’s disease. He has several known risk factors for Alzheimer’s disease, including diabetes, hypertension, and traumatic head injury (Reference Livingston, Huntley and Sommerlad4). He presented at a common age of symptom onset for Alzheimer’s disease, with an impairment pattern compatible with Alzheimer’s disease: his visuospatial ability was intact on the MMSE interlocking pentagon test, with a positive Clock Drawing Test (which was worse in the drawing part but improved on the copying part). His MMSE score was lower than expected, which may be related to the history of severe head injury aggravating his symptoms and accelerating the disease progression. Physicians are advised to check his vitamin B₁₂ on metformin and monitor his improvement on rivastigmine.

Although Mr Yue’s general functions are at a moderate stage of dementia, his performance in delayed recall on MMSE was satisfactory. This suggests that he is still able to encode and store information, with difficulties mainly arising from the retrieval of information. This ability in information encoding and storage can be used as his strength, by encouraging Mr Yue to participate regularly in cognitively stimulating activities, as well as social activities, to maintain his good verbal communications.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Ms Yeung’s daughter reported noticing memory problems in her mother that had concerned her for about two to three years, which had worsened in the past few months, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. No family history of psychiatric disorders or dementia was reported. Ms Yeung has received primary education of P.6 (approximately six years of education). Ms Yeung lives alone; she used to go to a community centre for older people but has stopped going recently.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Yeung had a blood pressure reading of 159/78 mm Hg. No other CVS or CNS findings.

Investigations

Vitamin B₁₂ and TSH were ordered. Ms Yeung declined to have any brain imaging procedures.

Diagnosis

Alzheimer’s disease.

Management

Donepezil 2.5 mg daily was prescribed. Ms Yeung was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain quality of life.

Suggestions for the Primary Care Team

This is a typical case of early Alzheimer’s disease. Ms Yeung’s Clock Drawing Test was positive while her performance on the visuospatial part of MMSE (interlocking pentagon) was intact; this is compatible as the Clock Drawing Test is more sensitive in picking up milder impairment. Although Ms Yeung has declined brain imaging, physicians may note that brain imaging is not mandatory for the work-up of Alzheimer’s disease based on current diagnostic criteria that are clinically oriented, although there are various views and guidelines surrounding this issue (see Section 1.3). The primary care team should nevertheless watch out for any deterioration in speech and language, and change in mood and personality, in subsequent follow-ups.

Ms Yue’s performance in ADL/IADL was generally satisfactory, and her cognitive functions were fair, except in short-term memory. The primary care team may investigate further her decreased motivation to go out and explore the underlying reasons, such as experience and fear of getting lost. As Ms Yue is living alone, community support services and ongoing care should be discussed with Ms Yue and her family; safety precautions, such as a location-tracking device, and home modifications with monitoring/remote control by the carer, should be considered.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.31 Findings from Ms Szeto’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Szeto’s daughter reported noticing memory problems in her mother that had concerned her for about a year, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Szeto has hypertension. She is currently on losartan 50 mg daily, pantoprazole 40 mg daily, amlodipine 2 mg daily, and simvastatin 20 mg. No family history of psychiatric disorders or dementia was reported. Ms Szeto walks unaided. She has received primary education.

Physical Examination Findings

General examination revealed no affect or hygiene problem. No CVS or CNS findings.

Diagnosis

Alzheimer’s disease with a significant depressive mood and suicidal ideation.

Management

Sertraline 25 mg daily and donepezil 2.5 mg daily were prescribed. Ms Szeto was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and promote quality of life.

Suggestions for the Primary Care Team

Ms Szeto has a suicidal idea of jumping from a height, for which urgent referral to a psychiatrist and secondary care is indicated. This should be followed up with the management of depression and Alzheimer’s disease after stabilisation of any imminent suicide risk. For her depression, clinical consultation on her depressive mood is needed, and physicians should check if SSRIs should be prescribed.

Her presentations of cognitive and ADL/IADL impairments are typical of Alzheimer’s disease with a significant depressive mood, including typical Clock Drawing Test results, with performance improving on the copying part. While MMSE showed significant impairment in her orientation to place, interpretation should take into consideration the possibility of underscoring due to her unfamiliarity with the assessment venue. Physicians may note in this case that, despite the presence of vascular burden, a diagnosis of mixed dementia (Alzheimer’s disease and vascular dementia) is not always indicated.

Despite significant deterioration in short-term memory and related functional performance as shown in the cognitive assessment, Ms Szeto remained relatively independent in her ADLs and IADLs with satisfactory performance, suggesting that her self-care and community living have yet to be severely affected by the cognitive impairments at this moment. This should be a strength to consider utilising and maximising in her care plan. This contrasted with her self-evaluation: Ms Szeto reported feeling bad about her memory problems, despite her good ADL/IADL functioning. The primary care team should explore any other factors affecting her self-evaluation. While it could potentially be explained by her significant depressive mood, which could also contribute to the cognitive deterioration, in some cases carer factors (e.g., negative comments and blaming of poor memory) may also contribute to poor self-image and stress, which should be explored. The family can be provided with psychoeducation on the impact of dementia as appropriate.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.32 Findings from Ms Leung’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Leung’s daughter reported noticing memory problems in her mother that had become more obvious in the past year, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ? Managing money and finances

• ? Managing medication independently

• ? Using transport

Ms Leung’s daughter was unable to judge about her ability regarding managing money, managing medication independently, and using transportation: a domestic helper would help with money and medication management, and Ms Leung seldom goes out or uses transportation. She would nevertheless go to a centre for older people and a park nearby.

There is an additional feature to consider for non-Alzheimer’s dementia, namely pain and rigidity on one side. Ms Leung has hypertension, right macular degeneration, breast cancer, a total knee replacement, and a prolapsed uterus. She is currently on hypertension medication prescribed to her at a geriatric outpatient clinic. No family history of psychiatric disorders or dementia was reported. She has received primary education to P.3 (approximately three years of education).

Physical Examination Findings

General examination revealed no affect or hygiene problem. A heart murmur was noted. No other CVS or CNS findings.

Investigations

TSH and free T4 were ordered.

Diagnosis

Alzheimer’s disease (tentative diagnosis).

Management

Donepezil 5 mg daily was prescribed. Ms Leung was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and to maintain quality of life.

Suggestions for the Primary Care Team

In Ms Leung’s case, while her presentation is compatible with a diagnosis of early Alzheimer’s disease, the presence of rigidity needs to be followed up and referred for secondary care. Physicians should observe Ms Leung’s response to donepezil over time. Both pharmacological and non-pharmacological interventions and her care plan might need to be adjusted depending on the confirmation of the diagnosis.

Ms Leung’s performance in ADL/IADL matches with her cognitive functioning as shown in the assessment; for example, her repeated buying can be attributed to her impairment in short-term memory. While Ms Leung’s performance in orientation to place appeared to be severely impaired, interpretation should take into consideration the possibility of underscoring due to unfamiliarity with the assessment venue. Also of note is the long duration of untreated illness – with symptoms first occurring four to five years ago and her family seeking help only recently; in many cases, the delay would mean significant progression of dementia, missing the best time for intervention. This could indicate a low level of awareness of the family carers about the interventions and services for dementia. The primary care team should equip Ms Leung’s family with knowledge of the disease, proper caring skills, and available resources (see Section 5.2), as well as preparing them for the later stages of dementia that will follow.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.33 Findings from Ms Wai’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Wai’s son reported noticing memory problems in his mother that had concerned him for about two to three months. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Wai has dyslipidaemia. She is currently taking medication for asthma. No family history of psychiatric disorders or dementia was reported. She did not receive any education. Ms Wai walks unaided and attends church every week.

Physical Examination Findings

General examination revealed no affect or hygiene problem. No significant CVS or CNS findings.

Investigations

Vitamin B₁₂ and TSH were ordered. MRI revealed no evidence of vascular dementia but cerebral atrophy.

Diagnosis

Alzheimer’s disease, with rapid onset of memory decline and poor orientation noted.

Management

Donepezil 2.5 mg daily was prescribed. Ms Wai was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain her quality of life.

Suggestions for the Primary Care Team

In Ms Wai’s case, acute stroke and vascular dementia were the differential diagnoses, but have been ruled out by the MRI brain results, which showed no evidence of vascular dementia. Her presentation was compatible with Alzheimer’s disease, in terms of a typical age of presentation, impairment pattern shown on MMSE (delayed recall being the first domain affected), and Clock Drawing Test results (positive findings in the clock drawing part, with performance improved in the copying part), although her onset was rather rapid, with significant deterioration over a few months and intact self-awareness. An MRI was therefore indicated to rule out additional brain pathology. Physicians should pay attention to any mood problems and continue to monitor her progress and treatment response to donepezil in subsequent follow-ups. In similar cases, monitoring cognitive change without prescribing a cholinesterase inhibitor can also be considered.

Ms Wai’s acute onset of cognitive decline has resulted in obvious impacts on her daily living within a few months. A strength to consider is that her cognitive, physical, and ADL/IADL functions were satisfactory with good performance, which can be utilised and optimised in her care plan. Another strength is her son’s high level of awareness, which has contributed to the early help-seeking. The primary care team can focus on working with both Ms Wai and her son for psychoeducation, explaining the diagnosis and the need to monitor cognitive and treatment response changes over time, which would inform further care planning. Meanwhile, general advice for maintaining a healthy lifestyle for brain health from a primary care perspective can be provided.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.34 Findings from Ms Wong’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Wong’s daughter reported noticing memory problems in her mother that had concerned her for two years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Wong has hypertension and varicose veins. She had a fall a year ago. She is currently on amlodipine 5 mg daily and losartan 50 mg daily. No family history of psychiatric disorders or dementia was reported. She has received primary education to P.3 (approximately three years of education).

Physical Examination Findings

General examination revealed no affect or hygiene problems. No significant CVS or CNS findings.

Investigations

CBP, R/LFT, VDRL, vitamin B₁₂, fasting sugar, and TFT were ordered. Result showed Hb 10.7 in CBP; vitamin B₁₂ and TFT were normal. CT brain (plain) scan revealed mild cerebral atrophy.

Diagnosis

Alzheimer’s disease with mild depression.

Management

Rivastigmine transdermal system 5 mg daily, fluoxetine 20 mg daily, and Calcichew one tablet twice a day were prescribed. Ms Wong was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and improve her mood and quality of life.

Suggestions for the Primary Care Team

Ms Wong’s presentation is typical of early Alzheimer’s disease with depression. At this stage, ADL/IADL and cognitive functions are generally good, with only short-term memory, executive function, and other higher-level cognitive functions showing more obvious deterioration. Depression is a concern in Ms Wong’s case, which will further worsen her overall functions. Physicians should monitor Ms Wong’s response to cholinesterase inhibitors and SSRIs; in subsequent follow-ups, they should observe and titrate rivastigmine and fluoxetine according to her clinical condition.

Given the importance of depression in her management, the primary care team should figure out if any psychosocial factors triggering her depressive mood can be identified. While multiple possibilities exist in the relationship between dementia and depression, in this case it is likely that Ms Wong’s depression may be a reaction to her awareness of the cognitive impairment. In early dementia with self-awareness, the person may be worried about the future, and it is not uncommon for carers, relatives, or friends to emphasise or blame the person for his/her weaknesses and memory problems. If this is the case, education for the family will help. The primary care team should also engage Ms Wong in meaningful leisure and failure-free activities, which could be more appropriate than emphasising the potential benefits of activities (e.g., ‘memory training’ and ‘cognitive improvement’), as the latter may be refused or rejected as useless because of Ms Wong’s prevailing mood. Motivation and improved mood are of higher priority at this moment.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.35 Findings from Clock Ms Choi’s Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Choi’s daughter reported noticing memory problems in her mother that concerned her for about three years. Delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Choi has hypertension and blurry vision due to bilateral cataracts (not operated). No family history of psychiatric disorders or dementia was reported. She has received primary education to P.3 (approximately three years of education). She is widowed, currently lives alone, and has good support from her one daughter.

Physical Examination Findings

General examination revealed no affect or hygiene problem. No significant CVS or CNS findings.

Investigations

CBP, ESR, R/LFT, calcium, VDRL, vitamin B₁₂, fasting sugar, folate, and TSH/FT4 were ordered. CBP result: Hb 10.3 NcNc. ESR 28, VDRL negative, and vitamin B₁₂ 198 (low). Folate and TSH/FT4 were normal. CT brain (plain) scan revealed meningioma at the left frontal lobe (1.9 cm × 1.6 cm × 1.3 cm), cerebral atrophy of mild temporal lobe, lacunar infarcts in both basal ganglia, and small vessel disease.

Diagnosis

Moderate Alzheimer’s disease and mild vitamin B₁₂ deficiency.

Management

Donepezil 5 mg daily, vitamin B-complex supplement one tablet daily, aspirin EC 100 mg daily, and pantoprazole 40 mg daily were prescribed. Ms Choi was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and to maintain her quality of life.

Suggestions for the Primary Care Team

Delusion is not uncommon in moderate Alzheimer’s disease. When it is reported, the content of the delusion and its associated mood should be explored. Delusions of theft, especially those related to money or personal belongings, are very frequently encountered by family members and carers, which can be distressing for both the person and others.

Although Ms Choi’s poor eyesight and age-related frailty might have contributed to a lower score of MMSE and given her old age, there may be hippocampal sclerosis involvement in the pathology, the management should follow that of Alzheimer’s disease pathology. Ms Choi’s deterioration shows that she is progressing into a moderate stage of dementia. Considering that her signs and symptoms have been observed for three years already, there is a delay in help-seeking, missing the best time for intervention at an earlier stage of dementia. This could be due to a masking of her memory problems because of her independence in ADL/IADL: depending on the person’s premorbid level of functioning and the requirement of independence in the person’s daily living, ADL/IADL performance may not always be immediately affected by cognitive impairment (IADL, but not ADL, impairment is a diagnostic criterion for dementia, see Section 1.3), and/or it can be related to limited awareness and understanding in the person and her carers about dementia, in which case carer education would be particularly indicated.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Ms Ng’s husband reported noticing memory problems in his wife that had concerned him for about a year. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Family history of dementia was noted: Ms Ng’s mother was reported to have had dementia. No family history of other psychiatric illness was reported. She has received tertiary education and had trained as a teacher. Ms Ng has good social support and plays Mahjong with her sister every week.

Physical Examination Findings

General examination revealed a hygiene problem but no affect problem. Ms Ng has a blood pressure reading of 141/91 mm Hg. No significant CVS or CNS findings.

Investigations

CBP, ESR, R/LFT, calcium, VDRL, vitamin B₁₂, fasting sugar, fasting lipids, MSU × R/M and culture test, CXR, and ECG were ordered. All investigations were normal except high fasting lipids. MRI revealed decreased medial temporal thickness.

Diagnosis

Early Alzheimer’s disease.

Management

Donepezil 5 mg daily was prescribed. Ms Ng was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

This is a case of very early Alzheimer’s disease, with mild cognitive impairment and cognitive frailty as the differential diagnoses. Some unusual features were noted, including a relatively younger age of presentation (which could suggest an aggressive amyloid load) and a negative Clock Drawing Test finding. Ms Ng’s response to donepezil should be monitored in terms of changes in her clinical symptoms and functioning. A case conference with specialists is recommended for Ms Ng’s case to review differential diagnoses and the evolution of atypical/typical features for Alzheimer’s disease in response to donepezil and non-pharmacological interventions. Closer observation of her treatment response will provide information about the diagnosis and guide further interventions as needed.

The fact that Ms Ng’s cognitive deterioration was picked up by her carer at this very early stage of dementia, with only mild impairment demonstrated upon assessment, could indicate good awareness and support from the family, which is a strength in Ms Ng’s case. The primary care team should nevertheless remind her family to avoid ‘over-caring’ and putting too much emphasis on providing direct care at this stage: Ms Ng was noted to be quite dependent on her husband for IADL tasks, although according to the assessment results her functioning should be good at this moment. The priority now would be to motivate her to participate in daily activities, comply with drug treatment, and engage in non-pharmacological interventions and activities.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Lau’s husband reported noticing memory problems in his wife that had concerned him for about two years. Delusional ideations were reported, with Mrs Lau suspecting him of stealing her personal belongings. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Lau has hypertension and hypercholesterolaemia. She has received primary education (approximately six years of education).

Investigations

CBP, ESR, R/LFT, calcium, vitamin B_12, and folate were ordered. MRI revealed MTL not atrophic, ARWMC 1.

Diagnosis

Mild Alzheimer’s disease (hippocampal-sparing type).

Management

Donepezil 5 mg every alternate night was prescribed. Mrs Lau was recommended to join a centre-based programme with cognitively stimulating activities to maintain her cognitive and self-care functioning. She was also encouraged to have regular exercise, a healthy diet and mental stimulation, and maintain an active social life. Non-pharmacological intervention to manage the distressed behaviours and neuropsychiatric symptoms of dementia was also recommended.

Suggestions for the Primary Care Team

The relatively young age of onset of Alzheimer’s disease in Mrs Lau’s case highlighted several areas the primary care team should pay attention to. First is the need for further investigations, with an MRI to investigate hippocampus atrophy and other pathology, and PiB PET amyloid imaging can be recommended. Her treatment response to donepezil should also be monitored. Another consideration is the educational background; the low education level in this case may contribute to a lower cognitive reserve and thus an earlier presentation of symptoms. Finally, as hypertension is a risk factor for Alzheimer’s disease, Mrs Lau’s case with an onset age of 69 years should remind primary care physicians of the importance of good control of hypertension and other cardiovascular risk factors, as well as drug compliance.

While the impairment pattern and symptoms in Ms Ng’s case are compatible with Alzheimer’s disease, the early presentation of delusions mandates further assessment of their causes other than memory problems. For example, the primary care team could observe her home setting during home visits to identify any environmental factors that can be modified, or if any clues are available to suggest further investigation (e.g., is her home cluttered and disorganised? Is there any space for her to keep her important personal belongings?). The team should also try to find out more about Ms Ng’s relationship with her husband. On the other hand, given the delusional content, carer stress will be a concern in the care plan for Ms Ng. The primary care team can work with the family to identify needs and the possibility of sharing/shifting part of the caring role from Ms Ng’s husband to other family members to prevent burnout and other negative psychological impacts on her husband.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Cheung’s daughter reported noticing memory problems in her mother that had concerned her for about two years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Cheung has hypertension, diabetes, hypercholesterolaemia, and mild depression. Her education level was unclear, although it is likely that she has received more than six months but less than two years of education.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B_12, and folate were ordered. MRI revealed MTLA R = 6.9, L = 7.0, with Scheltens score R = L = 2; ARWMC 3/3, and empty sella.

Diagnosis

Early Alzheimer’s disease with small vessel disease.

Management

Donepezil 5 mg daily and esomeprazole 20 mg daily were prescribed. She was recommended to join a centre-based programme with cognitively stimulating activities to maintain cognitive functions and quality of life. She was also encouraged to have regular exercise, a healthy diet and mental stimulation, manage stress, and maintain an active social life.

Suggestions for the Primary Care Team

This is a typical case of Alzheimer’s disease with small vessel disease. Diabetes is a known risk factor for Alzheimer’s disease, with insulin resistance being a core feature of type 2 diabetes mellitus and an important feature of Alzheimer’s disease (the ‘brain insulin resistance’ concept) (Reference Arnold, Arvanitakis and Macauley-Rambach5,Reference Talbot, Wang and Kazi6). Mrs Cheung’s case highlighted the need to optimise the treatment of cardiovascular risk factors. Given her low education level and likely low cognitive reserve to mask neuropathology, Alzheimer’s disease should still be in its early stages. Her ADL/IADL performance was also satisfactory, which should be considered a strength. However, the primary care team should note a discrepancy between the apparent good performance in orientation to place on MMSE and the reported history of Mrs Cheung getting lost in unfamiliar places. Further investigation into Mrs Cheung’s ability to navigate in the community and a detailed history of the previous episodes when she was unable to find her way will be needed to facilitate the care plan in terms of safety precautions. Whether it indicates a decline in ability, or whether it was linked to lifestyle habits (e.g., unfamiliarity with certain transportation) unrelated to a change in cognitive ability, should be investigated. In any case, a location-tracking device when going out would be advisable to ensure safety.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Choi’s son reported noticing memory problems in his mother that had concerned him for about a year. Delusional ideations were reported: she would accuse family members of taking her money from time to time. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Choi has hypertension, hypercholesterolaemia, and coronary artery disease. No family history of psychiatric disorders or dementia was reported. Her education level was unclear, although it is likely that she has received more than two years of education.

Diagnosis

Early Alzheimer’s disease.

Management

Donepezil 5 mg every alternate night was prescribed. She was recommended to join a centre-based programme with cognitively stimulating activities, for the maintenance of cognitive functions and quality of life.

Suggestions for the Primary Care Team

This is a case of very early Alzheimer’s disease with a typical pattern of impairment shown on assessment. Mrs Choi’s performance in the Clock Drawing Test was better than other cognitive tests, suggesting a good response to donepezil. Her MMSE score, however, was slightly lower than expected for her dementia stage. The distressed behaviours and neuropsychiatric symptoms of dementia, such as the delusion observed in this case, may aggravate the cognitive symptoms of Alzheimer’s disease and affect a person’s community functioning.

Considering that there was significant impairment in Mrs Choi’s general functional performance in most IADL domains, which will further deteriorate if her delusional ideations are not managed, the current management focus would be to identify strategies for preventing/minimising the occurrence of these ideations and/or their consequences. The primary care team may equip carers with appropriate caring and communication skills for working with delusions, such as avoiding direct confrontation (e.g., defending or arguing when being suspected as a thief in this case), providing locked drawers, cupboards, or even a room for the person to store his/her own belongings (while keeping spare keys in a safe place in case of loss of keys), housekeeping, and organising personal belongings only when she is away to avoid being suspected while at the same time keeping the items in their original place. Potential carers’ stress and strain in family relationships caused by the delusion should also be explored and addressed.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.36 Findings from Mr Hui’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Hui’s social worker reported noticing memory problems in him for a few months. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mr Hui has hypertension and benign prostatic hyperplasia. No family history of psychiatric disorders or dementia was reported. His education level was unclear, although it is likely that he has received less than six months of education.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B₁₂, folate, fasting sugar, fasting lipids, and T4 were ordered.

Diagnosis

Early Alzheimer’s disease.

Management

Mr Hui was recommended to join a centre-based programme with cognitively stimulating activities, for the maintenance of cognitive functions and quality of life.

Suggestions for the Primary Care Team

This is a typical case of early Alzheimer’s disease. The positive finding on the Clock Drawing Test, which was worse in the drawing part and improved in the copying part, is compatible with a typical presentation of Alzheimer’s disease. While Mr Hui’s MMSE score was lower than expected for this stage of Alzheimer’s disease, this should be interpreted in the context of a low education level and therefore the relatively low cognitive reserve that would be available to compensate for or mask the impact of Alzheimer’s disease neuropathology. The primary care physician may consider the use of cholinesterase inhibitors to maintain Mr Hui’s cognition and enhance the effects of the non-pharmacological interventions.

With Mr Hui’s typical presentation of Alzheimer’s disease, it is foreseeable that his memory and other cognitive problems will continue to affect his daily functions as he progresses along the disease stages. Advance care planning is needed at this stage, taking into consideration whether support from family carers may be identified; for example, an appointed carer will be needed to handle his finances and to support Mr Hui’s future care planning. As Mr Hui’s informant who prompted the help-seeking was his social worker, some information about Mr Hui’s family situation and current care arrangements could be available through service liaison. The primary care team should pay attention to the likelihood that Mr Hui may become dependent shortly and will be in need of companions for living in the community; carers (if any) have to prepare for better arrangements and planning.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) (b) Clock Copying (10 past 10)

Figure 2.37 Findings from Mrs Mok’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Mok’s friend reported noticing Mrs Mok’s memory problems that had concerned her for about three years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

It was unclear whether Mrs Mok’s tendency to shop repeatedly for desserts was related to overeating and craving sweet food. There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Mok has hypertension. No family history of psychiatric disorders or dementia was reported. Her education level was unclear, although it was reported that she had probably received more than two years of education. She lives alone.

Investigations

CT brain (plain) scan was ordered.

Diagnosis

Moderate Alzheimer’s disease.

Management

No medication was prescribed at the time of the report, when Mrs Mok’s drug record was being retrieved from a hospital. She was recommended to join a centre-based programme with cognitively stimulating activities, for the maintenance of cognitive functions and quality of life.

Suggestions for the Primary Care Team

Mrs Mok presented at a slightly older age for Alzheimer’s disease symptom onset. Her MMSE score was lower than expected for her disease stage, which may be related to the additional effect of age-related cognitive frailty on top of Alzheimer’s disease. Given that her condition is compatible with moderate Alzheimer’s disease, it is recommended that Mrs Mok be treated accordingly. A cholinesterase inhibitor is indicated.

Based on the symptoms reported and overall clinical picture, Mrs Mok’s ADL/IADL functioning as assessed from her friend’s report may not be entirely accurate: she lives alone and her friend may not be fully aware of her daily self-care ability. To derive an appropriate care plan, the primary care team is recommended to conduct a home visit and gather further information from multiple sources about Mrs Mok’s daily functioning, with direct tests/assessments where appropriate. While Mrs Mok’s communication ability remained intact (language and attention), considering her severe deterioration in other cognitive functions, full-time caring would be recommended to ensure safety and quality of life.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.38 Findings from Mr Yip’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Yip’s son reported noticing memory problems in his father that had concerned him for about two years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. No family history of psychiatric disorders or dementia was reported. Mr Yip walks unaided. He has received an education to P.6 (approximately eight years of education).

Physical Examination Findings

General examination revealed no affect or hygiene problem. No significant CVS or CNS findings.

Investigations

CBP, R/LFT, vitamin B₁₂, fasting sugar, fasting lipids, and TFT were ordered. The result showed 5.7 in the fasting sugar test. CT brain (plain) scan revealed cerebral atrophy.

Diagnosis

Probable Alzheimer’s disease.

Management

Rivastigmine transdermal system 5 mg daily was prescribed. Mr Yip was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain his quality of life.

Suggestions for the Primary Care Team

This is a probable case of Alzheimer’s disease with a positive Clock Drawing Test. Mr Yip’s impairment pattern is typical of Alzheimer’s disease, although his MMSE score was slightly lower than expected for his relatively young age, which could suggest a high amyloid pathology load. His poor performance in orientation to place should be interpreted with caution, taking into account that he might have been taken to the assessment site by the carer without being informed. The provisional diagnosis will require observation of his cognition over time for confirmation. Meanwhile, a cholinesterase inhibitor can be started in the event of deteriorating cognition.

Confusion of long-term and short-term memories may be more common in moderate and later stages of dementia, which is consistent with Mr Yip’s cognitive assessment result, showing moderate impairment in cognition. The primary care team should note that his ADL and IADL appeared better than expected, given his moderate cognitive impairment, which should be considered as his strengths. Carers should, however, be cautious about risks and avoid underestimating Mr Yip’s deterioration, as he would need more care and verbal reminders and would need to be accompanied in situations of potential safety concerns. Considering his confusion over time, the primary care team can give him a trial of intensive reality orientation or even incorporate reality orientation into his 24-hour living schedule.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mr Au’s son reported noticing memory problems in his father that had concerned him for about one year. Delusional ideations were reported. He started to present with tremor about two years ago, about the same time that his wife was admitted to the care home. He was noted to always blame himself as the major cause of the cognitive decline of his wife, and he worried a lot about her. He has given up almost all of his social life, staying in the care home with his wife most of the day. He has avoided travelling far due to his worries about his wife in the care home. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mr Au has diabetes, hypertension, old myocardial infarction/ischaemic heart disease, dyslipidaemia, chronic obstructive pulmonary disease, gout, benign prostatic hyperplasia with transurethral resection of the prostate, and possible cervical myelopathy. He is currently on amlodipine 5 mg daily, metoprolol 25 mg twice a day, metformin 1 g twice a day, simvastatin 5 mg nocte, allopurinol 200 mg daily, isosorbide mononitrate 20 mg three times daily, aspirin 100 mg daily, beclomethasone two puffs twice a day, salbutamol four puffs four times per day, ipratropium bromide four puff four times per day, crotamiton cream PRN, and nitroglycerin PRN. No family history of psychiatric disorders or dementia was reported. He has received a secondary education of Form 2 (approximately eight years of education). Mr Au walks with a stick.

Physical Examination Findings

General examination revealed no affect or hygiene problem. No significant CVS or CNS findings.

Investigations

CBP, R/LFT, vitamin B₁₂, fasting sugar, fasting lipids, and TSH/FT4 were ordered. TSH/FT4 was normal. CT brain (plain) scan revealed mild cerebral atrophy; no significant medial temporal lobe atrophy or small vessel disease was found.

Diagnosis

Early Alzheimer’s disease.

Management

Rivastigmine transdermal system 4.6 mg daily was prescribed. He was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain his quality of life.

Suggestions for the Primary Care Team

Mr Au has Alzheimer’s disease with a typical presentation pattern of impairment and positive Clock Drawing Test results, although his poor performance in orientation to place on MMSE should be interpreted with caution, taking into account that he might have been taken to the assessment site by the carer without being informed. Physicians should look for clinical features of parkinsonism, consider cortical Lewy body disease, and ask about a history of hallucinations and rapid eye movement behaviour disorder (REMBD). The primary care team should also pay attention to Mr Au’s irritability and self-blaming, with possible depression. Starting rivastigmine transdermal system treatment is appropriate, while an atypical antipsychotic, such as quetiapine, should be considered if behavioural problems do not improve with rivastigmine.

Mr Au’s cognitive function shown in the assessment was good, and therefore his ADL and IADL appeared to be worse than expected for his cognitive performance. The primary care team should explore whether the impairments in ADL/IADL were more related to older age and physical frailty or to distressed behaviours and neuropsychiatric symptoms of dementia. Although no problems with managing medication were reported, with the polypharmacy and as his cognition continues to deteriorate, some safety precautions would be needed. Mr Au has more prominent psychiatric symptoms than cognitive impairment; the team is recommended to rule out the impact of these symptoms and reassess after symptom stabilisation.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.39 Findings from Mr Lau’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Lau’s wife reported noticing memory problems in her husband that had concerned her for about two years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

Mr Lau had a stroke two years ago. He walks with a quadripod. There is an additional feature to consider for non-Alzheimer’s disease: Mr Lau has apraxia in self-care and was unable to dress himself and use feeding utensils, for which corticobasal degeneration may be considered. Mr Lau has diabetes, atrial fibrillation, an old cerebrovascular accident, and dyslipidaemia. He is on warfarin 3 mg daily, pantoprazole 40 mg daily, metformin 500 mg twice a day, simvastatin 20 mg, paracetamol 500 mg qid, tramadol 50 mg twice a day PRN, and insulin lispro. No family history of psychiatric disorders or dementia was reported. He has received primary education to P.6 (approximately six years of education). He has limited social activities.

Physical Examination Findings

General examination revealed a hygiene problem (smelly clothes) but not an affect problem. Mr Lau was found to have atrial fibrillation during CVS examination. No significant CNS findings.

Investigations

CBP, R/LFT, fasting sugar, fasting lipids, chest X-ray, and ECG were ordered. CT brain (plain) scan revealed an old infarct at the parieto-occipital region.

Diagnosis

Mixed dementia (Alzheimer’s disease and vascular dementia).

Management

Rivastigmine transdermal system was prescribed. He was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain quality of life.

Suggestions for the Primary Care Team

Mr Lau had early Alzheimer’s disease, and it was appropriate to start with cholinesterase inhibitors. The history of stroke and physical frailty has contributed to Mr Lau’s cognitive impairment, which has also affected his self-care ability; it is therefore appropriate to interpret his apraxia in self-care as part of the symptomatology of mixed dementia instead of corticobasal degeneration. The primary care physician is advised to gradually titrate up the dose of the cholinesterase inhibitor in the event of deteriorating cognition.

The primary care team is recommended to figure out whether the apraxia and inability to perform the self-care tasks is because of post-stroke physical dysfunctions. Physical maintenance will be of higher priority than cognitive enhancement at this stage. Another focus of the care plan is to prevent complications when Mr Lau progresses to a later stage of dementia. Carer support services and preparation for long-term care should be planned together with Mr Lau’s family.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Ms Chu’s daughter reported noticing memory problems in her mother that had concerned her for about two years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Chu has hypertension. No family history of psychiatric disorders or dementia was reported. She did not receive any education. She walked unaided.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Chu had normal blood pressure. No significant CVS or CNS findings.

Investigations

CT brain (plain) imaging was ordered.

Diagnosis

Alzheimer’s disease.

Management

Rivastigmine transdermal system 4.6 mg daily was prescribed. She was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain her quality of life.

Suggestions for the Primary Care Team

This is a typical presentation of Alzheimer’s disease in an older person who has not received any formal education. For staging, the primary care team could use the Functional Assessment Staging Test (FAST) method, paying attention to whether Ms Chu was unable to choose appropriate clothing: an indicator of her entering into the moderate stage of dementia. Starting treatment with cholinesterase inhibitors would be appropriate, while primary care physicians may consider memantine in the event of deteriorating cognition.

Ms Chu’s assessment results on GDS-15 showed marginally significant depressive symptoms. Depression in older age and Alzheimer’s disease have multiple pathways of relationships, with some shared neurosubstrates; managing the depressive symptoms at the same time is therefore an important aspect of her treatment plan.

While Ms Chu’s current profile suggests a moderate to severe stage of dementia already, she was still able to maintain community living and able to go out by herself, which should be considered her strength; carers will, however, need to be reminded about her risk of getting lost and other safety concerns. Her level of signs and symptoms suggested an onset earlier than the reported two years, which might have been missed by carers. Carers’ awareness and education may be needed if this is the case. Home assessment for safety measures, adaptive aids with reminders, a stove with an automatic shut-off, and other safety appliances may help, as well as home security IP cameras.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mr Cheung’s son reported noticing memory problems in his father that had concerned him for about a year. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mr Cheung has hypertension and a right inguinal hernia (repaired). He was currently on terazosin 2 mg daily and hypromellose eyedrops. No family history of psychiatric disorders or dementia was reported. He has received primary education to P.3 (approximately three years of education). He walks unaided.

Physical Examination Findings

General examination revealed no depressive-looking mood/affect problem and no affect or hygiene problem. Mr Cheung had no atrial fibrillation, heart murmur, or carotid bruit problem, with normal cardiac impulse on CVS examination. CNS examination revealed no focal pyramidal sign, extra-pyramidal sign, gait abnormalities, or speech problems.

Investigations

CT brain (plain) scan was ordered.

Diagnosis

Alzheimer’s disease.

Management

Donepezil 2.5 mg daily was prescribed. He was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and to maintain quality of life.

Suggestions for the Primary Care Team

In view of the relatively young age of onset, Mr Cheung’s education level and occupational history should be considered to help interpret the level of impairment taking into account the level of premorbid cognitive reserve. In this case, while the impairment pattern was typical of Alzheimer’s disease, Mr Cheung’s MMSE score was lower than expected for the early stage of dementia. There is no other obvious comorbidity in his history, so a more aggressive amyloid load may be possible, although the primary care team should note a low level of education (about three years) that suggests a low cognitive reserve.

It is likely that Mr Cheung’s onset was earlier than one year before, as his signs and symptoms might have been masked by a high level of independence in ADLs and IADLs. It could also be because Mr Cheung’s carers were not able to observe his performance in these tasks, missing the signs of decline and impairment, or because the person has already adapted to the dysfunctions by himself, given his high functioning level, which could result in a phenomenon of ‘sudden’ deterioration from the informants’ point of view. The primary care team should try to investigate Mr Cheung’s actual and potential self-care ability to determine if discrepancies – or excess disability – exist, in which case strategies to close the gap and support the best possible functioning would be appropriate until Mr Cheung reaches a later stage of disease.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.40 Findings from Ms Soo’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Soo’s daughter reported noticing memory problems in her mother that had concerned her for several years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

Ms Soo was reported to have no problem managing money as her relatives would help her with her finances.

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Soo was not on any medication. She has not received any education. Ms Soo has limited social activity, except that her daughter visits her sometimes. She stays at home most of the time; she lived alone and seldom goes out or attends any activities in community centres for older people.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Soo had no atrial fibrillation, heart murmur, or carotid bruit problem, with normal cardiac impulse on CVS examination. On CNS examination, no focal pyramidal sign, extra-pyramidal sign, gait abnormalities, or speech problems were found.

Investigations

Vitamin B₁₂, T4, and CT brain (plain) scan were ordered.

Diagnosis

Alzheimer’s disease.

Management

Donepezil 2.5 mg daily for the first two weeks and donepezil 5 mg thereafter were prescribed. She was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration, promote social connection, and enhance her quality of life.

Suggestions for the Primary Care Team

This is a case of typical early Alzheimer’s disease, and starting treatment with donepezil is acceptable. The primary care physician should consider titrating up the dose of donepezil in the event of worsening cognition. In addition, given the general lack of activity and social life, it is likely that her cognition can be enhanced with stimulation provided regularly at the day care service. The primary care team is advised to identify the causes for her disengagement from the community (e.g., personality, low motivation); addressing them would potentially help to re-engage Ms Soo for a more enriched way of life.

Ms Soo’s assessment suggested a good orientation to place, with a high level of ADL and IADL functioning; these suggested that she should still be able to live well in the community with support. The cause of her episodes of getting lost should be further explored: from her profile, it appears that her functional level should allow her to look for cues in the environment or seek help from others on the street to find her way. It would be worth investigating and observing her performance when going out to find out her actual dysfunctions or difficulties. Advance care planning is indicated to prepare Ms Soo and her carers for when she may no longer be able to live alone safely.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.41 Findings from Ms Siu’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Siu’s daughter reported noticing memory problems in her mother that had concerned her for about 20 months. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Siu has hypertension. She is currently on amlodipine 5 mg daily, clopidogrel 75 mg daily, and enalapril 5 mg daily. No family history of psychiatric disorders or dementia was reported. Ms Siu did not receive any education. She lives with her husband and their youngest daughter. A poor relationship with her husband was noted. She also reported poor sleep quality. Ms Siu walked unaided, with satisfactory balance.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Siu was found to have hypertension on blood pressure check. No other significant CVS or CNS findings.

Investigations

CBP, R/LFT, calcium. VDRL, vitamin B₁₂, fasting sugar, MSU × R/M and culture test, chest X-ray, ECG, and CT brain (plain) scan were ordered.

Diagnosis

Alzheimer’s disease.

Management

Rivastigmine transdermal system 9.5 mg daily was prescribed. She was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and promote quality of life.

Suggestions for the Primary Care Team

This is a case of typical Alzheimer’s disease with strong depressive elements. Treatment for her chronic depression with a selective serotonin reuptake inhibitor, such as escitalopram, may be considered. Ms Siu was noted to have repetitive bathing, a behaviour that can be linked to her depressive symptoms and other mental health issues such as obsession and anxiety not related to her cognitive impairment; the primary care team should clarify the premorbid personality of Ms Siu and rule out other psychological or psychiatric causes such as depression, mixed anxiety and depressive disorder, and obsessive compulsive disorder.

Ms Siu’s cognitive functions, including short-term memory as shown in delayed recall, were well maintained at this moment, except for a more obvious deterioration in executive functions and other higher cognitive functions. Her ADL and IADL were still generally preserved, except for slight ‘clumsiness’ reported because of memory impairment. These should be regarded as her strengths, and the primary care team should try to educate her carers to encourage her participation for the maintenance of functioning as far as possible. When engaging her family in developing a care plan, the primary care team should explore family support, including the poor relationship between Ms Siu and her husband, which would be potentially relevant also for the management of her depressive symptoms.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.42 Findings from Ms Tse’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician by Primary Care Physician

Ms Tse’s daughter reported noticing memory problems in her mother that had concerned her for about two years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Tse has hypertension. She is currently on nifedipine retard 20 mg twice a day. Worsened vision and anxiety were noted. No family history of psychiatric disorders or dementia was reported. She had not received any education. Ms Tse lives with her husband and a son. She walks unaided with satisfactory balance.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Tse had a high blood pressure of 130/80 mm Hg. No significant CVS or CNS findings.

Investigations

CT brain (plain) scan was ordered.

Diagnosis

Alzheimer’s disease.

Management

Donepezil 5 mg daily was prescribed. She was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain her quality of life.

Suggestions for the Primary Care Team

In this case of mild Alzheimer’s disease, an unusually low MMSE score was noted. While this may suggest a high amyloid load, considering the fact that Ms Tse has never received any formal education, her low cognitive reserve may also explain the low score. Ms Tse has difficulty sleeping. Primary care physicians should clarify the duration of insomnia and any mood changes.

Denial of dementia, cognitive impairment, and functional decline are common in people living with dementia, and in some otherwise healthy older people. The primary care team should equip carers with suitable caring and communication skills, such as avoiding an emphasis or focus on Ms Tse’s weaknesses, dysfunctions, or poor memory; instead, appearing to be supervising, instructing, or coaching the person, carers could participate directly in the task together with Ms Tse. The primary care team may remind the carers that there is no need to confront Ms Tse for the mistakes she has made in completing the task, although mistakes (and thus failures) should be avoided as much as possible to ensure motivation, for example, by providing reminders in advance, preparing the environment well to facilitate her independence, and simplifying tasks to maximise success. Ways to minimise Ms Tse’s denial are important for ensuring compliance with the medication and non-pharmacological interventions.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Ms Tang’s daughter reported noticing memory problems in her mother that had concerned her for about two years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Tang had hypertension, an old cerebrovascular accident, and old myocardial infarction/ischaemic heart disease. She had hearing loss but was not wearing a hearing aid. She was on aspirin 100 mg daily, pantoprazole 40 mg daily, isosorbide mononitrate 10 mg twice a day, vitamin B complex daily, enalapril 40 mg daily, betahistine 6 mg three times a day, PRN, nitroglycerin, and trimetazidine modified release 35 mg at night. No family history of psychiatric disorders or dementia was reported. She has received secondary education of Form 3 (approximately nine years of education). She walked assisted by a helper, refused to use a stick indoors, and used a wheelchair outdoors. Ms Tang lived with her daughter, with good family support.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Tang had normal blood pressure of 110/70 mm Hg. Heart murmur was noted. No CNS findings.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B₁₂, fasting sugar, MSU × R/M and culture test, chest X-ray, and ECG were ordered. Results were normal in CBP, calcium, vitamin B_12, and fasting sugar; ESR 52, ALT 54, MSU × R/M, and culture test were negative. Chest X-ray showed wide mediastinum, and ECG showed SR. CT brain (plain) scan revealed small vessel disease and lacunar infarcts at external capsule.

Diagnosis

Mild neurocognitive disorder (possible Alzheimer’s disease and vascular cause), left shoulder tendonitis, and low back pain scoliotic spine with possible underlying osteoporosis.

Management

Rivastigmine transdermal system 5 mg daily, Calcichew 500 mg twice a day, and morphine patch daily in the afternoon were prescribed. Ms Tang was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain her quality of life.

Suggestions for the Primary Care Team

This is a typical case of early Alzheimer’s disease with hearing issues, with an expected good treatment response to transdermal rivastigmine. Hearing impairment is a known key risk factor for dementia, contributing to a significant 8 per cent of the population attributable fraction of potentially modifiable risk factors for dementia (Reference Livingston, Huntley and Sommerlad4). Considering Ms Tang’s cognitive functioning level as shown in the MMSE assessment, her ADL/IADL performance was worse than expected, which might have been affected by her hearing problem. The primary care team should identify possible ways of improving Ms Tang’s hearing, while at the same time preparing the family for the potential occurrence of distressed behaviours and neuropsychiatric symptoms of dementia: with the confusion about or lack of sensory input, it is not uncommon for people living with dementia to misinterpret others’ gestures, facial expressions, or behaviours. Family carer education on better ways to communicate and handle such situations would be helpful to minimise their negative impact (when they occur) and even prevent them from arising.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mr Cheng’s daughter reported noticing memory problems in her father that had concerned her for about one year. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. No family history of psychiatric disorders or dementia was reported. Mr Cheng received tertiary education at university.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Mr Cheng had a blood pressure reading of 122/67 mm Hg. No significant CVS or CNS findings.

Investigations

CBP, R/LFT, VDRL, vitamin B₁₂, fasting sugar and MSU × R/M, and culture test were ordered. All investigations were normal but the results of MSU × R/M and culture test were pending. Chest X-ray and ECG were conducted. MRI was ordered.

Diagnosis

Mild Alzheimer’s disease.

Management

Donepezil 5 mg daily was prescribed. Mr Cheng was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and to maintain his quality of life.

Suggestions for the Primary Care Team

This is a case of early Alzheimer’s disease with typical presentations, including greater impairment in delayed recall and orientation, while other cognitive domains were relatively spared. The help-seeking behaviour of the family, namely noticing a problem for 12 months and taking action when triggered by a more recent significant decline, is also typical. Although the performance in orientation to place was unexpectedly poor in comparison with orientation to time, this should be interpreted with caution, taking into account that he might have been taken to the assessment site by the carer without being informed. An MRI scan is needed to investigate medial lateral temporal atrophy. With the tertiary level of education, which suggests a higher cognitive reserve, it is possible that there is significant brain pathology despite a questionable dementia rating as shown in the Clinical Dementia Rating. Mr Cheng is expected to have good clinical response to donepezil.

Mr Cheng’s performance was impaired in higher cognitive functions and memory, which are typical at this stage; his strengths are well-maintained ADL/IADL and active participation in community activities. This is a good time to receive intensive cognitively stimulating activities, while he should continue to be empowered in participating in ADL and IADL activities. Family carers, however, need to be reminded to closely observe Mr Cheng’s changes in cognitive functioning and prepare for later stages of dementia.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Ms Chung’s son reported noticing memory problems in his mother that had concerned him for about 12 months. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. No family history of dementia was reported. A family history of depression was reported, with one of her sons diagnosed with depression. She had not received any education. She has limited social activities and was not attending any activities organised by community centres for older people.

Physical Examination Findings

General examination revealed no affect or hygiene problem. No significant CVS or CNS findings.

Investigations

CBP, R/LFT, VDRL, vitamin B₁₂, RBS, folate test, and TSH/FT4 were ordered. Vitamin B₁₂, RBS, folate and TSH/FT4 were normal. VDRL was negative. CT brain (plain) scan revealed no evidence of disease.

Diagnosis

Alzheimer’s disease and overactive bladder.

Management

Rivastigmine transdermal system 5 mg daily and solifenacin were prescribed. Ms Chung was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain her quality of life.

Suggestions for the Primary Care Team

This is a typical case of early Alzheimer’s disease. Medications and non-pharmacological interventions for early Alzheimer’s disease are therefore appropriate. Primary care physicians should, however, watch out for symptoms of an overactive bladder after commencing rivastigmine.

While Ms Chung’s deterioration in cognitive functions was obvious, her ADL and IADL performance was better than one would otherwise expect for her level of cognitive impairment. Considering that she has been taking care of a son with mental illness for many years, it is possible that Ms Chung has good premorbid independence and ADL/IADL functions, which have now become a protective factor delaying the presentation of impairments in her daily living.

Although her GDS-15 results did not suggest a significant depressive mood, a high level of carer stress is a strong risk factor for depression, and the primary care team should explore her mood further. With Ms Chung being aware of her own cognitive decline, breaking the news about her dementia diagnosis may trigger worries over the future care of her son with mental illness, which may further worsen her depressive mood. The primary care team should also pay attention to Ms Chung’s future mood changes that may occur as the dementia affects her role or ability as a carer. It is advisable to engage Ms Chung and her family in discussing care arrangements, for both herself and the son she is caring for, while Ms Chung still has the mental capacity to make and communicate more complex decisions, to provide reassurance for her.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Fan’s daughter reported noticing memory problems in her mother that had concerned her for about two years, although no delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ○ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Fan had had her uterus removed, and she is currently being followed up at a medicine outpatient clinic for sphincter problems. No family history of psychiatric disorders or dementia was reported. She has received more than 10 years of education.

Investigations

Calcium, VDRL, vitamin B₁₂, folate, ECG, and TSH were ordered. CT brain (plain) scan revealed no significant atrophy, a GCA score of 0, and MTA score of 0.

Diagnosis

Mild cognitive impairment/very early Alzheimer’s disease.

Management

Mrs Fan was encouraged to have regular exercise, a healthy diet, and mental stimulation, and maintain an active social life. She was recommended to join a centre-based programme with cognitively stimulating activities to maintain cognitive and self-care functions and promote quality of life.

Suggestions for the Primary Care Team

Mrs Fan presented with an impairment pattern that borders on mild cognitive impairment and very mild Alzheimer’s disease. Her MMSE results showed delayed recall impairment in other cognitive domains, and ADL/IADL appeared largely intact. Considering her relatively young age of presentation and more than 10 years of education, however, the occurrence of mild impairment may nevertheless imply a more aggressive amyloid load, which is no longer being masked despite her high cognitive reserve. The recommendation for the primary care physician is therefore to treat Mrs Fan as having early Alzheimer’s disease. A cholinesterase inhibitor can be trialled and observed for any improvement. A case conference with specialists would be appropriate in this case.

Mrs Fan has an active social life, and she is maintaining her hobbies, which should be considered her strengths. She also seems to be enjoying relatively good physical health and basic self-care abilities. The primary care team may make use of these strengths in maximising her community engagement and independence, while also paying attention to safety and risks, such as her risks of getting lost due to problems in finding her way, and home hazards due to poor short-term memory when using the stove. The use of anti-lost or location-tracking devices and stoves with an automatic safety switch, for example, would be helpful.

Assessments from Occupational Therapist/Social Worker

History Taken with Carer

Mr Lee’s wife and daughter reported noticing memory problems in their husband/father that had concerned them for about two years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

No additional clinical features of non-Alzheimer’s dementia were noted. Comorbidities of hypercholesterolaemia, cataract (operated on), and glaucoma were reported. No family history of psychiatric disorders or dementia was reported. Mr Lee’s education level was unclear, although he was suggested to have probably received more than two years of education.

Diagnosis

Alzheimer’s disease, with no distressed behaviours and neuropsychiatric symptoms of dementia, and decline in memory, executive function, and language ability.

Management

No medication was prescribed due to pending blood results. Mr Lee was recommended to join a centre-based programme with cognitively stimulating activities, for the maintenance of cognitive functions and quality of life.

Comments

This is a good case to illustrate mild Alzheimer’s disease in old age (over 90 years), when cognitive frailty should also be considered. While there were some features that were less compatible with a stage of mild dementia, with an intact Clock Drawing Test and the ability to manage medication by himself, Mr Lee’s deterioration in ADL/IADL was more concerning. Primary care physicians may try a low dose of cholinesterase inhibitors, such as donepezil 2.5 mg, and observe if there is any improvement.

The primary care team is also recommended to find out more about Mr Lee’s biography, interests, and reasons for withdrawing from challenging situations, for tailoring suitable activities in the centre. It is not uncommon for older people who have a higher level of education and some insight into his/her cognitive decline to feel ashamed of showing others their impairment. If this is the case for Mr Lee, activities should be framed as more intellectually challenging yet failure free: many arts and crafts activities may serve this purpose, and it is important to identify activities that align with Mr Lee’s interests and role identity, to give him a sense of meaning and preserve his dignity. From a ‘use it or lose it’ perspective, Mr Lee’s previous avoidance of challenges could have contributed further to his cognitive decline; by reintroducing cognitively stimulating activities in a safe setting (in terms of failures and potential humiliation) in his everyday life, there is good potential that Mr Lee’s cognitive functioning can be maintained or even enhanced.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Chau’s daughter-in-law reported noticing memory problems in her mother-in-law that had concerned her for about two years. Slow yet progressive decline in cognitive functions was noted; however, significant impairment was evident after a three-month hospitalisation early last year. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Chau had hypertension and a biliary stone in the common bile duct. No family history of psychiatric disorders or dementia was reported. Her education level was unclear, although it is likely that she has received more than six months but less than two years of education.

Investigations

VDRL, vitamin B₁₂, folate, fasting sugar, and fasting lipids were ordered. CT scan was ordered.

Diagnosis

Probable early Alzheimer’s disease.

Management

Mrs Chau was recommended to join a centre-based programme with cognitively stimulating activities for the maintenance of cognitive functions and quality of life.

Suggestions for the Primary Care Team

This is a case of very early Alzheimer’s disease, while post-hospitalisation delirium is a differential diagnosis the primary care physician should consider. It is common for older people to develop delirium and/or dementia after hospitalisation. The primary care team should explore the signs and symptoms of delirium in Mrs Chau during her hospitalisation, as half of the post-hospitalisation delirium has its symptom onset during hospitalisation. Hospitalisation can cause disorientation; together with Mrs Chau’s health condition (including physical and mental health), she may need time to recover.

Mrs Chau’s cognitive screening assessment borders on cognitively intact (results from MMSE and Clock Drawing Test) and impairment (from MoCA). As these cognitive screening assessments are not definitive indicators of impairment, with cut-off scores obtained from a one-off assessment reflecting population norms instead of within-person absolute decline, they should be used as a reference to support clinical judgement only. The primary care team is therefore recommended to reassess Mrs Chau’s condition in six months, after her condition has stabilised and recovered. A cholinesterase inhibitor is indicated in the event of worsening cognition in subsequent follow-ups. Meanwhile, engaging Mrs Chau in cognitively stimulating activities that are enjoyable and meaningful would be appropriate, which could support rehabilitation in the event of cognitive impairment as a result of hospitalisation, and maintain/enhance cognition in the case of early Alzheimer’s disease. The primary care team may also identify ways to support Mrs Chau’s reorientation by establishing healthy daily routines, including going regularly to a centre, which would be beneficial whether or not the Alzheimer’s disease diagnosis is eventually confirmed.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.43 Findings from Mr Lee’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mr Lee’s son reported noticing memory problems in his father that had concerned him for about two years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mr Lee had hypertension, diabetes with neuropathy, benign prostatic hyperplasia, hypercholesterolaemia, glaucoma, and cataract. No family history of psychiatric disorders or dementia was reported. His education level was unclear, although it is likely that he has received more than two years of education.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B₁₂, folate, and TSH were ordered. Results: Hb10 in CBP; 41 in ESR; urea 13.3, creatinine 161, and eGFR 38 in RFT; vitamin B₁₂ 134 on 100 mg BD; and normal in LFT and TSH. MRI revealed mild age-related atrophy/multiple small foci of bilateral cerebral small vessel ischaemic changes.

Diagnosis

Mild dementia and probable Alzheimer’s disease.

Management

Donepezil 2.5 mg every alternate night was prescribed. Mr Lee was recommended to a centre-based programme with cognitively stimulating activities to maintain his cognitive functioning, self-care functioning, and quality of life; he was encouraged to have regular exercise, a healthy diet and mental stimulation, and maintain an active social life.

Suggestions for the Primary Care Team

This is a typical case of early Alzheimer’s disease, with a compatible impairment pattern showing delayed recall being most obviously affected compared with other cognitive domains and a positive Clock Drawing Test with worse performance in the drawing part and improvement in the copying part. Medication and non-pharmacological interventions for early Alzheimer’s disease are appropriate in Mr Lee’s case.

Although Mr Lee’s depressive mood on assessment did not reach a clinically significant level, the primary care team can explore more about factors that would contribute to improved mood and quality of life. From a biopsychosocial perspective, psychological factors such as mood, social psychology, and personality are factors that would affect a person’s dementia presentation; by optimising these factors – possibly through positive social interactions at the centre and other strategies – it is possible for Mr Lee’s cognitive performance and functioning to be enhanced.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Ma’s friend reported noticing memory problems in her friend that had concerned her for about a year. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Ma has hypertension and was receiving follow-up consultations for this at a geriatric medicine outpatient clinic. No family history of psychiatric disorders or dementia was reported. She has received six years of education.

Investigations

Calcium, VDRL, vitamin B₁₂, folate, ECG, and TSH were ordered. CT brain (plain) scan revealed prominent cerebral sulci/ventricles that are age-related changes.

Diagnosis

Moderate Alzheimer’s disease.

Management

Mrs Ma was recommended to join a centre-based programme with cognitively stimulating activities, for the maintenance of cognitive functioning, self-care functioning, and quality of life; she was encouraged to have regular exercise, a healthy diet and mental stimulation, and maintain an active social life.

Suggestions for the Primary Care Team

Mrs Ma presented with a typical impairment pattern compatible with Alzheimer’s disease. For staging, the primary care team can refer to the FAST method for guidance and explore whether she can dress herself properly or not. If help is needed, it would suggest a moderate stage of dementia. The primary care team should pay attention to her severe hearing deficit for a number of reasons: hearing deprivation can lead to social isolation and limited sensory and mental stimulation and aggravate cognitive decline; hearing problems would also significantly affect performance in daily living and the accuracy of cognitive assessment. At the same time, hearing problems can be corrected, with proper assessment and management. Bedside otoscopic examination, the use of hearing aids and/or referral to otolaryngologists should be considered. The correction of hearing disability is equally important as the pharmacological management of dementia. The primary care team is recommended to manage Mrs Ma’s hearing problem first, observe her response to intervention, and reassess her to find out more accurately about her strengths and weaknesses, so as to suggest suitable care planning and caring strategies.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

Figure 2.44 Findings from Mrs Cheng’s Clock Drawing Test – Clock Drawing (3 o’clock).

History Taken with Carer by Primary Care Physician

Mrs Cheng’s daughter reported noticing memory problems in her mother that had concerned her for about six months. Delusional ideations were reported: Mrs Cheng was noted to be suspicious about strangers stealing her money. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Cheng has hypertension. No family history of psychiatric disorders or dementia was reported. Her education level was unclear, although it is likely that Mrs Cheng has received more than two years of education.

Investigations

CBP, Vitamin B₁₂, and TSH were ordered.

Diagnosis

Alzheimer’s disease.

Management

No medication was prescribed while waiting for blood work-up findings. Mrs Cheng was recommended to join a centre-based programme with cognitively stimulating activities to maintain cognitive and self-care functions; she was encouraged to have regular exercise, a healthy diet and mental stimulation, and maintain an active social life; non-pharmacological interventions to manage distressed behaviours and neuropsychiatric symptoms of dementia were also recommended.

Suggestions for the Primary Care Team

This is a case of amnestic mild cognitive impairment bordering on very early Alzheimer’s disease. Often with public awareness and early detection efforts in the community, people in a preclinical or very early state would be more likely to get in touch with services, by themselves or with the support of a family member, as in Mrs Cheng’s case. The primary care team will therefore have to differentiate and manage/triage those with dementia, amnestic mild cognitive impairment, and cognitive frailty. Cognitive frailty refers to the predisposition to cognitive impairment secondary to physical frailty (a state of vulnerability to stressors as a consequence of a cumulative decline in many physiological systems (Reference Clegg, Young, Iliffe, Rikkert and Rockwood7)). In amnestic mild cognitive impairment, impaired memory is the presenting feature, while the person is functioning well otherwise.

Based on the person’s education level and previous occupation, physicians will need to use discretion to decide on the management direction. For people with higher cognitive reserve to be showing these early symptoms, there could be a higher amyloid load and starting treatment would be appropriate while observing for clinical improvement. In Mrs Cheng’s case, given her lower level of education, observation for six months and starting treatment if deterioration is evident would be advisable. Giving a label of amnestic mild cognitive impairment (versus Alzheimer’s disease) here is for diagnostic purposes, while clinically this can be considered a case of sub-threshold early Alzheimer’s disease, with typical signs and symptoms and compatible ADL/IADL performance. The primary care team should pay attention to Mrs Cheng’s delusional ideations that her belongings were being stolen by strangers, which can negatively affect her mood, increasing her tendency to develop more severe distressed behaviours and neuropsychiatric symptoms of dementia. Early intervention and prevention of the delusion and complications are needed.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mrs Fong’s daughter reported noticing memory problems in her mother that had concerned her for about two years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Fong has left eye blindness and right eye poor night vision. No family history of psychiatric disorders or dementia was reported. Her exact education level was unclear, although it is likely that she has received more than two years of education.

Investigations

Vitamin B₁₂ and TSH were ordered. All investigations were normal. Brain CT scan revealed mild cerebral atrophy.

Diagnosis

Alzheimer’s disease.

Management

Rivastigmine transdermal system 5 mg alternate day was prescribed. She was recommended to join a centre-based programme with cognitively stimulating activities to maintain cognitive functions.

Suggestions for the Primary Care Team

Mrs Fong’s presentation is compatible with early Alzheimer’s disease, with intact visuospatial performance. Her performance in the Clock Drawing Test was excellent considering her bilateral visual impairment. The management of her visual impairment should be optimised, if she has not been under the care of the ophthalmologist. Starting treatment at a low dose is recommended, with a rivastigmine patch of 5 mg (versus 10 mg) sufficient as a starting dose, and observation of her response to medication. The dose of rivastigmine should be increased in the event of declining cognitive function. The consideration here is to balance the medication side effects and maintenance of her ADL/IADL functioning.

Mrs Fong’s current impairment in ADL/IADL was mainly attributable to her memory impairment, such as forgetting whether she has taken medication or showered. She could nevertheless still be able to execute the tasks satisfactorily, such as getting around and using public transportation. The primary care team should therefore coach her family carers to use reminders, adopt a routine schedule, and modify the environment to help maintain her existing functions for as long as possible. As a safety precaution, the use of anti-lost and location-tracking devices would help support her continued active participation in the community.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.45 Findings from Mrs Tsang’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Tsang’s nephew reported noticing memory problems in his aunt that had concerned him for about one to two years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Tsang had hypertension, heart disease, left eye cataract (operated on), gastroesophageal reflux disease, and osteoporosis. She was having pantoprazole and supplements for osteoporosis. No family history of psychiatric disorders or dementia was reported. Her education level was unclear, although it is likely that she has received less than six months of education.

Investigations

CBP, vitamin B₁₂, and TSH were ordered.

Diagnosis

Early Alzheimer’s disease.

Management

No medication was prescribed while blood results were awaited. She was recommended to join a centre-based programme with cognitively stimulating activities, for the maintenance of cognitive abilities and quality of life.

Suggestions for the Primary Care Team

Mrs Tsang’s presentation is typical of early Alzheimer’s disease. It is sometimes the case that results from various cognitive screen assessments may differ, as in this case for the negative MMSE and positive MoCA results. Unlike detailed neuropsychological assessments that are developed to provide more precise testing of cognitive functions, both MMSE and MoCA are developed as quick screening tools to facilitate clinical judgement and triage, with varied sensitivity and specificity for different levels of cognitive impairment, as well as other pros and cons (e.g., influence of education on performance). The primary care team should therefore exercise clinical judgement and make reference to available information from multiple sources in deciding on the best course of action and management plan. In Mrs Tsang’s case, her MMSE score was marginal, while the positive MoCA and Clock Drawing Test (which was worse in the drawing part and improved in the copying part), together with IADL impairment, provided evidence of deterioration. Cholinesterase inhibitors would help Mrs Tsang. Starting with a low dose of cholinesterase inhibitor, such as donepezil 2.5 mg, while observing her progress would be appropriate.

The primary care team should also note that her IADL performance appeared worse than would otherwise be expected from her cognitive assessment results, which may be attributable to her premorbid lifestyle/habits. Further exploration would be useful to inform her care plan and strategy. Another point to note is the possible involvement of age-related cognitive decline in frailty given Mrs Tsang’s age. The management of frailty should be optimised while treatment and intervention for Alzheimer’s disease is being arranged.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.46 Findings from Mrs Ip’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Ip’s friend reported noticing memory problems in her friend that had concerned her for about two years. Delusional ideations were reported: Mrs Ip was noted to be blaming her flatmate for stealing her food. Self-reported decreased motivation to go out was noted. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ○ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mrs Ip had hypertension and hypercholesterolaemia. No family history of psychiatric disorders or dementia was reported. Her education level was uncertain, although it is likely that she has received less than six months of education.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B₁₂, folate, fasting sugar, fasting lipids, MSU × R/M and culture test, chest X-ray, ECG, and T4 were ordered. CT brain (plain + control) scan was ordered as well.

Diagnosis

Early Alzheimer’s disease.

Management

No medication was prescribed due to pending investigation results. She was recommended to join a centre-based programme with cognitively stimulating activities, for the maintenance of cognitive abilities and quality of life.

Suggestions for the Primary Care Team

This is a typical case of early Alzheimer’s disease, with the potential involvement of age-related cognitive frailty. Although Mrs Ip’s performance appeared intact in the visuospatial test on MMSE (i.e., interlocking pentagon), her impairment was evident on the Clock Drawing Test (with worse performance on drawing and improving on the copying part). Starting treatment with low-dose cholinesterase inhibitors would be appropriate.

Care planning is needed to support Mrs Ip in maintaining her quality of life and quality of care to prepare for the foreseeable rise in care needs when she may no longer be able to take care of herself. A home assessment is needed to investigate if there is any clutter or whether her belongings are well organised. The primary care team can help identify strategies, such as adding cues and putting her belongings in more intuitive or obvious places, to ensure she can find her items easily and not suspect others of stealing things from her. Mrs Ip has limited social support as she is living with another older person in the flat. The primary care team should explore her social background and be attentive to depressive symptoms. Meanwhile, support could be solicited from Mrs Ip’s friend to understand her relationship with her other flatmates, as conflict might have occurred/happened with the accusation of theft; providing information for her flatmate about dementia and/or identifying strategies to minimise Mrs Ip’s chance of missing items in the flat – which could be the cause for the delusion about theft – would be helpful.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.47 Findings from Mrs Chong’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Mrs Chong’s daughter reported noticing memory problems in her mother that had concerned her for about two years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There was an additional clinical feature to consider for non-Alzheimer’s dementia: she had experienced complex visual hallucinations once or twice about a year ago. Mrs Chong had hypertension and a left hip fracture with replacement this year. No family history of psychiatric disorders or dementia was reported. Her education level was unclear, although it is possible that Mrs Chong had about three to four years of education.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B₁₂, folate, fasting sugar, fasting lipids, MSU × R/M and culture test, chest X-ray, ECG, and T4 were ordered. CT brain (plain) scan was ordered.

Diagnosis

Mild cognitive impairment or mild Alzheimer’s disease.

Management

No medication was prescribed at this stage. Mrs Chong was recommended to join a centre-based programme with cognitively stimulating activities, for the maintenance of cognitive abilities and quality of life.

Suggestions for the Primary Care Team

This is a case of age-related cognitive frailty on top of a slow disease process of Alzheimer’s disease, with impairment in visuospatial ability (i.e., interlocking pentagon on MMSE) and positive Clock Drawing Test findings. Primary care physicians should pay attention to her complex visual hallucinations, clarify their nature, and investigate whether they are related to cortical Lewy body disease. In some cases, the so-called visual hallucination may also simply be the recollection and verbalisation of vivid memory. Starting a cholinesterase inhibitor at a low dose, such as donepezil 2.5mg, would be appropriate.

Considering Mrs Chong’s older age of presentation, the primary care team would need to bear in mind her stamina when working out a care plan with Mrs Chong and her family. Instead of recommending high-intensity cognitive stimulation only, adding some social and leisure activities as part of her daily routine would be advisable to ensure some more restful periods for Mrs Chong to recover from more challenging activities. At this stage of the disease, maintaining a stable mood and avoiding confusion that could trigger distressed behaviours and neuropsychiatric symptoms of dementia would be important.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.48 Findings from Ms Cheng’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Cheng’s son reported noticing memory problems in his mother that had concerned him for about one year. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Cheng has diabetes mellitus, hypertension, dyslipidaemia, cervical cancer (treated with radiation therapy), and radiation cystitis. She was having amlodipine besylate 5 mg daily and metformin 50 mg twice a day. No family history of psychiatric disorders or dementia was reported. Ms Cheng did not receive any education. She attended a community centre for older people and participated in voluntary work.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Cheng had no atrial fibrillation, heart murmur, or carotid bruit problem, with a normal cardiac impulse on CVS examination. On CNS examination, no focal pyramidal sign, extra-pyramidal sign, gait abnormalities, or speech problems were found.

Investigations

CBP, ESR, R/LFT, calcium, vitamin B₁₂, and VDRL were ordered. CT brain (plain) scan revealed no evidence of disease.

Diagnosis

Mild cognitive impairment.

Management

No medication was prescribed. She was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain quality of life.

Suggestions for the Primary Care Team

This is likely a case of mild cognitive impairment of the amnestic type. Ms Cheng presented at a relatively younger age, being self-aware of her memory problems, with nearly normal performance on MMSE, but MoCA and the Clock Drawing Test showed her impairment. Considering the difference between MMSE and MoCA scores, a detailed comparison of the impaired domains to identify any inconsistencies may provide insight. At the mild cognitive impairment stage, no medication is indicated at this moment, although Ms Cheng should be followed up to observe for changes in cognitive performance and the onset of clinical Alzheimer’s disease. Cholinesterase inhibitors should be started in the event of cognitive decline six months later. Mecobalamin or metformin twice a day can be prescribed to Ms Cheng.

Considering her obvious impairment in executive function as shown on the Clock Drawing Test, her intact ADL/IADL ability and good self-awareness are of note. The primary care team is recommended to also reassess this functioning after six months. At the same time, Ms Cheng and her family members can be encouraged to keep a diary or chart of the memory problems that occur in her everyday life, including their frequency and other characteristics, to inform further investigation and care planning.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Ms Kwan’s daughter reported noticing memory problems in her mother that had concerned her for about a year. No additional delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Kwan had hypertension and dyslipidaemia, for which she was receiving follow-up consultations at a geriatric medicine outpatient clinic. She was having amlodipine besylate 10 mg daily, valsartan 40 mg daily, Minipress 2 mg three times a day, pantoprazole 40 mg daily as needed, and clotrimazole cream. No family history of psychiatric disorders or dementia was reported. She had received primary education to P.6 (approximately six years of education).

Physical Examination Findings

General examination revealed no affect or hygiene problem. No CVS findings. CNS findings showed frontal lobe releasing sign in palmomental and glabellar reflexes.

Investigations

CBP, ESR, R/LFT, calcium, VDRL, vitamin B₁₂, and TFT were ordered. VDRL was negative, and other investigations were normal. CT brain (plain) scan revealed a 0.8 × 0.7 × 0.8 cm nodule in the pituitary gland, which could represent a pituitary adenoma.

Diagnosis

Mild cognitive impairment/early Alzheimer’s disease.

Management

Rivastigmine transdermal system 5 mg daily was prescribed. She was recommended to join a specialised day care service for two days per week for two years to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

This is a case of mild cognitive impairment bordering on very early Alzheimer’s disease. Ms Kwan had a relatively short disease history of around one year but has impaired IADL; starting treatment is therefore recommended. The primary care team should watch out for possible depressive symptoms, even though her GDS-15 assessment was negative. On top of the rivastigmine patch, memantine should also be considered for temper tantrums. Antidepressants may also be considered for low volition.

The performance on the cognitive assessment of Ms Kwan is consistent with her daily living performance, with ADL/IADL mainly affected by short-term memory at this moment. Cues and reminders can still be useful in this early stage of the disease. Meanwhile, identifying any psychosocial issues that might have contributed to or triggered Ms Kwan’s motivation and temper issues would give clues to the possible causes (e.g., manifestation of depression) and tailor appropriate intervention strategies.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.49 Findings from Ms Ng’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Ng’s nephew reported noticing memory problems in his aunt that had concerned him for about two to three years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Ng was on a daily dosage of glucosamine supplement. No family history of psychiatric disorders was reported. However, Ms Ng had a family history of dementia; both her father and sister were diagnosed with dementia. She did not receive any education. Ms Ng is single and lives alone.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Ng had a normal blood pressure. No other CVS or CNS findings.

Investigations

CBP, R/LFT, calcium, vitamin B₁₂, fasting sugar, fasting lipids, chest X-ray, ECG, and TFT were ordered.

Diagnosis

Alzheimer’s disease.

Management

Donepezil 2.5 mg daily was prescribed. She was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain quality of life.

Suggestions for the Primary Care Team

This is a typical case of early Alzheimer’s disease. With her self-awareness of her memory problems, it is a good time for intervention. For her medication treatment, primary care physicians should consider escalating the dose of donepezil in the event of deteriorating cognition. Considering her premorbid independent ADL and lifestyle habits, Ms Ng can be expected to be able to maintain her functional level for a relatively long time. Home modifications, such as automatic light switches, safety sensors to alert overheating of the stove and full water in the sink, an electric cooking device, and an IP camera for her family members to monitor her home safety can be recommended. Ms Ng’s social support is another area of concern: she was living alone and appeared weak on her social support network. Social services should be introduced at this time to strengthen her support network. Although her self-awareness is a strength on the one hand as a motivation for intervention compliance, on the other hand it could also lead to a potential depressive mood and anxiety. The primary care team should pay attention to Ms Ng’s mood and adjustment, and develop preventive strategies in her care plan.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Ms Lam’s daughter reported noticing memory problems in her mother that had concerned her for about one year. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ⨉ Word finding

• ⨉ Managing money and finances

• ○ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Lam had hypertension. She did not have regular medication. No family history of psychiatric disorders or dementia was reported. She had not receive any education. She was active in social activities: she would go swimming and play badminton and table tennis with her friends every week.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Lam had a blood pressure reading of 153/80 mm Hg. No other CVS or CNS findings.

Investigations

Vitamin B₁₂, folate test, and MRI were ordered.

Diagnosis

Mild cognitive impairment/early Alzheimer’s disease.

Management

Donepezil 2.5 mg daily was prescribed. She was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain her quality of life.

Suggestions for the Primary Care Team

This is a case of either mild cognitive impairment of the amnestic type or very early Alzheimer’s’ disease, with a typical presentation of more obvious deterioration in executive functions and short-term memory. Given that most findings were negative, there is a heavier reliance on the lower MMSE score in determining Ms Lam’s diagnosis, with the current results suggesting dementia instead of mild cognitive impairment. However, Ms Lam’s performance in orientation to place should be interpreted with caution, taking into account that she might have been taken to the assessment site by the carer without being informed. In borderline cases like this, observation of change over time would be the recommended strategy, before the commencement of cholinesterase inhibitors. Meanwhile, cognitively stimulating activities in a day centre would be appropriate regardless, provided that the activities are adjusted for her higher cognitive level and grouping arranged with people of similar functioning ability; a healthy and active lifestyle could also be recommended, with some precaution regarding safety and environmental modification (e.g., cues regarding shopping items) to maximise Ms Lam’s functioning.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

(a) Clock Drawing (3 o’clock).

(b) Clock Copying (10 past 10)

Figure 2.50 Findings from Ms Ng’s Clock Drawing Test.

History Taken with Carer by Primary Care Physician

Ms Ng’s daughter-in-law reported noticing memory problems in her mother that had concerned her for about two years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Ng had impaired fasting glucose, hypertension, an old cerebrovascular accident, old myocardial infarction/ischaemic heart disease, and dyslipidaemia. She was having aspirin 80 mg daily, metoprolol succinate 12.5 mg twice a day, pepcidine 40 mg twice a day, amlodipine besylate 5 mg daily, flupentixol 0.5 mg and melitracen 10 mg daily, chlordiazepoxide 2.5 mg daily, strontium ranelate one tablet daily, and vitamin D₁ tablet daily. No family history of dementia was reported. There is family history of psychiatric illness of insomnia. She has received secondary education. Her son would provide her with some self-developed cognitive training/learning such as giving her assignments to write a diary and activity log daily.

Physical Examination Findings

General examination revealed no affect or hygiene problem. Ms Ng had a blood pressure reading of 132/69 mm Hg. No other significant CVS or CNS findings.

Investigations

CBP done two years ago was normal, and R/LFT one year ago was normal. Fasting sugar two years ago was 5.6. CT brain (plain) scan seven years ago revealed right anterior subdural haemorrhage after a fall, and MRI six years ago revealed subdural haemorrhage in a lacunar infarct bilateral (frontal). Vitamin B₁₂, folate test, VDRL, and MRI were ordered.

Diagnosis

Likely early Alzheimer’s disease and differential diagnosis mixed dementia.

Management

Donepezil 5 mg daily was prescribed. She was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

This is a typical example of early Alzheimer’s disease with a relatively younger age of onset. More obvious impairments in short-term memory and executive functions were observed, as well as in IADL functions. In this case, Ms Ng’s old cerebrovascular accident has affected her brain reserve, with vascular burden possibly adding to amyloid deposition. Her engagement in cognitive training provided by her son, with repeated information input and mentally stimulating activities, might have helped to delay her deterioration. The primary care team is reminded to pay attention, however, to her son’s level of carer stress and burden and to manage his expectations at a level that is realistic in Ms Ng’s case.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Ms Chan’s daughter reported noticing memory problems in her mother that had concerned her for about one year. Delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ⨉ Managing money and finances

• ⨉ Managing medication independently

• ⨉ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Chan had diagnosed depression and a right hip fracture with operation done. She was on tianeptine 6.25 mg twice a day, valproate 100 mg, diclofenac 25 mg three times a day, and famotidine 20 mg three times a day prescribed by a psychiatrist. No family history of psychiatric disorders or dementia was reported. She had received secondary education. She has two sons and three daughters with good family support. She walks with a walking frame with fair balance indoors.

Physical Examination Findings

General examination revealed no affect or hygiene problem. No atrial fibrillation, heart murmur, abnormal cardiac impulse, or carotid bruit were found on CVS examination. On CNS findings, no focal pyramidal sign, extra-pyramidal sign, frontal lobe releasing sign, or speech problems were found, but gait abnormalities were found after right hip fracture.

Investigations

CBP, R/LFT, calcium, VDRL, vitamin B₁₂, fasting sugar, and fasting lipids were ordered. CBP, R/LFT, calcium, vitamin B₁₂, fasting sugar, and fasting lipids were normal, whereas VDRL result was negative. CT brain (plain) scan revealed cerebral atrophy in medial temporal lobes and chronic small vessel disease.

Diagnosis

Alzheimer’s disease and depression.

Management

Rivastigmine transdermal system 5 mg daily, aspirin 100 mg daily, pantoprazole 40 mg on the morning, and paracetamol 1 g twice a day PRN for knee pain were prescribed. She was recommended to join a specialised day care service for two days per week, to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain her quality of life.

Suggestions for the Primary Care Team

This is a typical case of Alzheimer’s disease with depression, although her MMSE score was unusually low, with a high level of physical dependence that is not accounted for by Alzheimer’s disease. Physicians should ask about the hip fracture and possible delirium in hospital. Hip fractures commonly occur in people aged 80 years or above, with 50 per cent of patients developing delirium and 50 per cent of patients who develop delirium showing symptom onset of Alzheimer’s disease in two years.

Ms Chan has a history of depression; the primary care team should watch out for depressive elements in her dementia. Selective serotonin receptor inhibitors should be considered for her depression. The primary care physician may consider stopping the neuroleptic, and check for possible hallucinations and rapid eye movement behaviour disorder (REMBD). If present, the possibility of cortical Lewy body disease needs to be considered. A case conference with specialists is recommended.

Ms Chan’s performance in daily living and cognitive assessment findings should be interpreted under the context of her depressive mood, which could significantly affect the results in the event of extremely low motivation. Her delusional ideation may require medical attention, although the primary care team should note that non-pharmacological intervention is equally important: strategies such as equipping carers with appropriate communication skills, including the avoidance of direct confrontation or a correctional approach to the delusional ideations, minimising exposure to delusional content (in Ms Chan’s case, minimising the time when her husband would be seen together with the domestic helper), and a scheduled routine with regular social/cognitive failure-free activities to increase her positive emotions, would be helpful.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Ms Lau’s granddaughter reported noticing memory problems in her grandmother that had concerned her for about three years. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Ms Lau had diabetes, hypertension, an old cerebrovascular accident, palpitations, dyslipidaemia, vitamin B₁₂ deficiency, impaired renal function, hysterectomy, and osteoarthritis of the knee. She was on metoprolol succinate 100 mg daily, hydralazine 10 mg twice a day, amlodipine besylate 10 mg daily, lisinopril 20 mg daily, gliclazide modified release 120 mg daily, vildagliptin 50 mg, metformin 750 mg twice a day, simvastatin 10 mg at night, T4 75 mg daily, vitamin B₁₂ 1000 mcg daily, aspirin 100 mg daily, and zopiclone 7.5 mg N PRN. No family history of psychiatric disorders or dementia was reported. She has received secondary education. She is widowed and lives with a domestic helper. Ms Lau has a son and three daughters with good family support. She uses an umbrella as a walking aid with good balance.

Physical Examination Findings

General examination revealed no affect or hygiene problem. No significant CVS or CNS findings.

Investigations

CBP, R/LFT, calcium, fasting sugar, fasting lipids, Hb A1c, FT4, vitamin B₁₂, folate test, and TSH were ordered. Results were normal in fasting lipids and LFT; Hb 9.6 NcNc in CBP; R/LFT was normal; 5.7 in fasting sugar, vitamin B₁₂ 98 (low), folate 36, Hb A1c 5–9 per cent, FTA 17.7, and TSH 0.08. CT brain (plain) scan revealed lacunar infarcts in right basal ganglia, bilateral thalami, and small vessel disease.

Diagnosis

Mild cognitive impairment of the amnestic type/early Alzheimer’s disease.

Management

Rivastigmine transdermal system 5 mg daily was prescribed. She was recommended to join a specialised day care service for two days per week to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration and maintain her quality of life.

Suggestions for the Primary Care Team

This is a typical case of mild cognitive impairment bordering on very early Alzheimer’s disease. Ms Lau showed a typical pattern of impairment presentation at a slightly younger age than usual. The vitamin B₁₂ deficiency caused by metformin may have contributed to the cognitive impairment. Physicians could start with a low dose of cholinesterase inhibitors while monitoring her symptoms, correct the metformin-related vitamin B₁₂ deficiency, and optimise thyroid function.

Ms Lau’s cognitive performance was close to normal, with good ADL/IADL, including money management and handling other complex tasks in daily living and no impairment in short-term memory found on cognitive assessment. These findings showed some discrepancy with her subjective complaints and those of the informants. The primary care team is therefore suggested to reassess in six months to determine whether her cognitive impairment has improved with an increased vitamin B₁₂ level.

Findings from Screening Assessments by Allied Healthcare and Social Care Team

History Taken with Carer by Primary Care Physician

Mr Kwok’s daughter reported noticing memory problems in her father that had concerned her for a year. No delusional ideations were reported. Using the GPCOG Informant Interview, the following areas were noted to show more difficulties (⨉) or were preserved (○) compared to about two years ago:

• ⨉ Remembering recent events

• ⨉ Recalling recent conversations

• ○ Word finding

• ○ Managing money and finances

• ⨉ Managing medication independently

• ○ Using transport

There were no additional clinical features to consider for non-Alzheimer’s dementia. Mr Kwok had diabetes, hypertension, benign prostatic hyperplasia, and kidney cancer (left) with nephrectomy. He is currently on amlodipine besylate 2.5 mg daily, diazoxide 40 mg, and medicine for his benign prostatic hyperplasia. No family history of psychiatric disorders or dementia was reported. He had received primary education to P.2 (approximately two years of education). Mr Kwok had limited social activities and stayed at home most of the time.

Physical Examination Findings

General examination revealed no affect or hygiene problem. No significant CVS or CNS findings.

Investigations

CBP, R/LFT, VDRL, vitamin B₁₂, fasting sugar, fasting lipids, and TFT were ordered. Vitamin B₁₂ and TFT were normal. VDRL was negative. CT brain (plain) scan revealed lacunar infarct in right basal ganglia.

Diagnosis

Early Alzheimer’s disease.

Management

Rivastigmine transdermal system 5 mg daily, diltiazem hydrochloride extended release 100 mg daily, and omeprazole 20 mg daily were prescribed. He was recommended to join a specialised day care service for two days per week for two years to receive a structured and tailored intervention programme and cognitively stimulating activities to delay deterioration.

Suggestions for the Primary Care Team

This is a case that illustrates cognitive frailty, mild cognitive impairment of the amnestic type, and very early Alzheimer’s disease. In this case, mild cognitive impairment is suggested from the assessment and clinical interview, with satisfactory cognitive and daily living functions observed, except for short-term memory and related cognitive functions (delayed recall and orientation to time). At this moment, the primary care team should observe and monitor his situation and repeat the assessment in six months. Mr Kwok nevertheless needs to be supported and treated in view of his significant symptom of forgetting meals.