Witlox, J, Eurelings, LS, de Jonghe, JF, Kalisvaart, KJ, Eikelenboom, P, van Gool, WA. Delirium in elderly patients and the risk of post discharge mortality, institutionalization, and dementia: a meta-analysis. JAMA
2010; 304: 443–51.
Marcantonio, E, Ta, T, Duthie, E, Resnick, NM. Delirium severity and psychomotor types: their relationship with outcomes after hip fracture repair. J Am Geriatr Soc
2002; 50: 850–7.
Dosa, D, Intrator, O, McNicoll, L, Cang, Y, Teno, J. Preliminary derivation of a Nursing Home Confusion Assessment Method based on data from the minimum data set. J Am Geriatr Soc
2007; 55: 1099–105.
Ouimet, S, Riker, R, Bergeron, N, Cossette, M, Kavanagh, B, Skrobik, Y. Subsyndromal delirium in the ICU: evidence for a disease spectrum. Intensive Care Med
2007; 33: 1007–13.
Cole, MG, McCusker, J, Ciampi, A, Belzile, E. The 6- and 12-month outcomes of older medical inpatients who recover from subsyndromal delirium. J Am Geriatr Soc
2008; 56: 2093–9.
Martinez-Velilla, N, Alonso-Bouzon, C, Cambra-Contin, K, Ibañez-Beroiz, B, Alonso-Renedo, J. Outcome in complex patients with delirium and subsyndromal delirium one year after hospital discharge. Int Psychogeriatrics
2013; 25: 2087–8.
Cole, M, McCusker, J, Dendukuri, N, Han, L.
The prognostic significance of subsyndromal delirium in elderly medical inpatients. J Am Geriatr Soc
2003; 51: 754–60.
Cole, MG, McCusker, J, Voyer, P, Monette, J, Champoux, N, Ciampi, A, et al. Subsyndromal delirium in older long-term care residents: incidence, risk factors, and outcomes. J Am Geriatr Soc
2011; 59: 1829–36.
Bourdel-Marchasson, I, Vincent, S, Germain, C, Salles, N, Jenn, J, Rasoamanarivo, E, et al. Delirium symptoms and low dietary intake in older inpatients are independent predictors of institutionalization: a 1-year prospective population-based study. J Gerontol Biol Med Sci
2004; 59: 350–4.
Marcantonio, ER, Kiely, DK, Simon, SE, John Orav, E, Jones, RN, Murphy, KM, et al. Outcomes of older people admitted to postacute facilities with delirium. J Am Geriatr Soc
2005; 53: 963–9.
Tan, MC, Felde, A, Kuskowski, M, Ward, H, Kelly, RF, Adabag, AS, et al. Incidence and predictors of post-cardiotomy delirium. Am J Geriatric Psychiatry
2008; 16: 575–83.
Leonard, M, Spiller, J, Keen, J, MacLullich, A, Kamholtz, B, Meagher, D. Symptoms of depression and delirium assessed serially in palliative-care inpatients. Psychosomatics
2009; 50: 506–14.
Bond, SM, Dietrich, MS, Shuster, JL Jr, Murphy, BA. Delirium in patients with head and neck cancer in the outpatient treatment setting. Support Care Cancer
2012; 20: 1023–30.
von Gunten, A, Mosimann, UP. Delirium upon admission to Swiss nursing homes: a cross-sectional study. Swiss Med Wkly
2010; 140: 376–81.
Zuliani, G, Bonetti, F, Magon, S, Prandini, S, Sioulis, F, D'Amato, M, et al. Subsyndromal delirium and its determinants in elderly patients hospitalized for acute medical illness. J Gerontol A Biol Sci Med Sci.
2013; 68: 1296–302.
Franco, JG, Trzepacz, PT, Mejía, MA, Ochoa, SB. Factor analysis of the Colombian translation of the Delirium Rating Scale (DRS), Revised-98. Psychosomatics
2009; 50: 255–62.
Grover, S, Mattoo, S, Chakravarty, K, Trzepacz, PT, Meagher, D, Gupta, N. Symptom profile and etiology of delirium in a referral population in Northern India: factor analysis of the DRS-R98. J Neuropsychiatry Clin Neurosci
2012; 24: 95–101.
Meagher, D, Adamis, D, Trzepacz, P, Leonard, M. Features of subsyndromal and persistent delirium. Br J Psychiatry
2012; 200: 37–44.
Ceriana, P, Fanfulla, F, Mazzacane, F, Santoro, C, Nava, S. Delirium in patients admitted to a step-down unit: analysis of incidence and risk factors. J Crit Care
2010; 25: 136–43.
Skrobik, Y, Ahern, S, Leblanc, M, Marquis, F, Awissi, DK, Kavanagh, BP. Protocolized intensive care unit management of analgesia, sedation, and delirium improvesanalgesia and subsyndromal delirium rates. Anesth Analg
2010; 111: 451–63.
Hakim, SM, Othman, AI, Naoum, DO. Early treatment with risperidone for subsyndromal delirium after on-pump cardiac surgery in the elderly: a randomized trial. Anesthesiology
2012; 116: 987–97.
Voyer, P, Richard, S, Doucet, L, Carmichael, PH. Detecting delirium and subsyndromal delirium using different diagnostic criteria among demented long-term care residents. J Am Med Dir Assoc
2009; 10: 181–8.
Ryan, DJ, O'Regan, NA, Ó Caoimh, R, Clare, J, O'Connor, M, Leonard, M, et al. Delirium in an adult acute hospital population: predictors, prevalence and detection. BMJ Open
2013; 3: e001772.
American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorder (4th edn) . APA, 1994.
Hart, RP, Levenson, JL, Sessler, CN, Best, AM, Schwartz, SM, Rutherford, LE. Validation of a cognitive test for delirium in medical ICU patients. Psychosomatics
1996; 37: 533–46.
Blessed, G, Tomlinson, BE, Roth, M. The association between quantitative measures of dementia and of senile change in the cerebral grey matter of elderly subjects. Br J Psychiatry
1968; 114: 797–811.
Meagher, DJ, Leonard, M, Donnelly, S, Conroy, M, Saunders, J, Trzepacz, PT. A comparison of neuropsychiatric and cognitive profiles in delirium, dementia, comorbid delirium-dementia and cognitively intact controls. J Neurol Neurosurg Psychiatry
2010; 81: 876–81.
Inouye, SK, van Dyck, C. H., Balkin, S, Siegal, AP, Horwitz, RI. Clarifying confusion: the confusion assessment method. A new method for detection of delirium. Ann Intern Med
1990; 113: 941–8.
Trzepacz, PT, Mittal, D, Torres, R, Kanary, K, Norton, J, Jimerson, N. Validation of the Delirium Rating Scale-Revised-98: comparison with the delirium rating scale and the cognitive test for delirium. J Neuropsychiatry Clin Neurosci
2001; 13: 229–42.
Trzepacz, PT, Maldonado, JR, Kean, J, Abell, M, Meagher, DJ. The Delirium Rating Scale-Revised-98 (DRS-R98) Administration Manual. A Guide to Increase Understanding of How to Solicit Delirium Symptoms to Administer the DRS-R98. Paula Trzepacz, 2010.
Franco, JG, Mejía, MA, Ochoa, SB, Ramírez, LF, Bulbena, A, Trzepacz, PT. Delirium rating scale-revised-98 (DRS-R-98): Colombian adaptation of the Spanish version. Actas Esp Psiquiatr
2007; 35: 170–5.
Kato, M, Kishi, Y, Okuyama, T, Trzepacz, PT, Hosaka, T. Japanese version of the Delirium Rating Scale, Revised-98 (DRS-R98-J): reliability and validity. Psychosomatics
2010; 51: 425–31.
Jorm, AF. The Informant Questionnaire on cognitive decline in the elderly (IQCODE): a review. IntPsychogeriatrics
2004; 16: 275–93.
Charlson, ME, Pompei, P, Ales, KL, Mackenzie, CR. A new method of classifying prognostic comorbidity in longitudinal studies: development and validation. J Chron Dis
1987; 40: 373–83.
Siddiqi, N, House, AO, Holmes, JD. Occurrence and outcome of delirium in medical in-patients: a systematic literature review. Age Ageing
2006; 35: 350–64.
American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorder (5th edn) . APA, 2013.
Inouye, SK, Foreman, MD, Mion, LC, Katz, KH, Cooney, LM Jr.
Nurses’ recognition of delirium and its symptoms: comparison of nurse and researcher ratings. Arch Intern Med
2001; 161: 2467–73.
Ryan, K, Leonard, M, Guerin, S, Donnelly, S, Conroy, M, Meagher, D. Validation of the confusion assessment method in the palliative care setting. Palliat Med
2009; 23: 40–5.
Sands, MB, Dantoc, BP, Hartshorn, A, Ryan, CJ, Lujic, S. Single Question in Delirium (SQiD): testing its efficacy against psychiatrist interview, the Confusion Assessment Method and the Memorial Delirium Assessment Scale. Palliat Med
2010; 24: 561–5.
Meagher, DJ, Leonard, M, Donnelly, S, Conroy, M, Adamis, D, Trzepacz, PT. A longitudinal study of motor subtypes in delirium: relationship with other phenomenology, etiology, medication exposure and prognosis. J Psychosom Res
2011; 71: 395–403.
Trzepacz, PT, Franco, JG, Meagher, DJ, Lee, Y, Kim, JL, Kishi, Y, et al. Phenotype of subsyndromal delirium using pooled multicultural Delirium Rating Scale—Revised-98 data. J Psychosom Res
2012; 73: 10–7.