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Floods are the most common hazard to cause disasters and have led to extensive morbidity and mortality throughout the world. The impact of floods on the human community is related directly to the location and topography of the area, as well as human demographics and characteristics of the built environment.
Objectives:
The aim of this study is to identify the health impacts of disasters and the underlying causes of health impacts associated with floods. A conceptual framework is developed that may assist with the development of a rational and comprehensive approach to prevention, mitigation, and management.
Methods:
This study involved an extensive literature review that located >500 references, which were analyzed to identify common themes, findings, and expert views. The findings then were distilled into common themes.
Results:
The health impacts of floods are wide ranging, and depend on a number of factors. However, the health impacts of a particular flood are specific to the particular context. The immediate health impacts of floods include drowning, injuries, hypothermia, and animal bites. Health risks also are associated with the evacuation of patients, loss of health workers, and loss of health infrastructure including essential drugs and supplies. In the medium-term, infected wounds, complications of injury, poisoning, poor mental health, communicable diseases, and starvation are indirect effects of flooding. In the long-term, chronic disease, disability, poor mental health, and poverty-related diseases including malnutrition are the potential legacy.
Conclusions:
This article proposes a structured approach to the classification of the health impacts of floods and a conceptual framework that demonstrates the relationships between floods and the direct and indirect health consequences.
Carbon monoxide (CO) toxicity is a significant health problem. The use of non-invasive pulse CO-oximetry screening in the emergency department has demonstrated that the rapid screening of numerous individuals for CO toxicity is simple and capable of identifying occult cases of CO toxicity.
Objective:
The objective of this study was to extend the use of this handheld device to the prehospital arena, assess carboxyhemoglobin (SpCO) levels in emergency medical services (EMS) patients, and correlate these levels with clinical and demographic data.
Methods:
This was a retrospective, observational, chart review of adult patients transported to hospital emergency departments by urban fire department EMS ambulances during a six-week period. Each ambulance used a non-invasive pulse CO-oximeter (Rad-57, Masimo Inc.) to record patients' COHb concentrations (SpCO) along with the standard EMS assessment data. Spearman's Rank Correlation tests and Student's t-tests were used to analyze the data and calculate relationships between SpCO and other variables (age, gender, respiratory rate, heart rate, mean arterial pressure, and oxygen saturation measured by pulse oximetry).
Results:
A total of 36.4% of the patients transported during the study had SpCO documented. Of the 1,017 adults included in this group, 11 (1.1%) had an SpCO >15%. There was no correlation between SpCO and heart rate, ventilatory rate, mean arterial pressure, and oxygen saturation.
Conclusions:
Screening for CO toxicity in the EMS setting is possible, and may aid in the early detection and treatment of CO-poisoned patients.
Accurate estimation of a patient's age and weight are skills expected of all healthcare clinicians, including paramedics and nurses. It is necessary because patients may be unable to communicate such information due to unconsciousness or an altered state of conscious. Age and weight estimation influence calculation for medication dosages, defibrillation, equipment sizing, and other invasive procedures such as intubation. The objective of this study was to identify whether undergraduate paramedic and nursing students were able to accurately estimate a patient's age and weight based on digital patient photos.
Methods:
A prospective, observational study involving undergraduate paramedic and nursing students from two Australian universities was used to estimate the age and weight of seven patients (adult and pediatric). Each patient image appeared in a PowerPointTM presentation for 15 seconds, followed by a short pause, with the next patient image commencing automatically.
Results:
The findings demonstrated variable accuracy in age and weight estimation of the patients. Age estimations of pediatric patients were more accurate than estimations for adult patients. The majority of patient weights were under-estimated, with university undergraduate students in one university displaying similar estimations to the other university counterparts.
Conclusions:
Results from this study identified variations in students' ability to accurately estimate a patient's age and weight. This study shows that consideration should be given to age and weight estimation education, which could be incorporated into undergraduate healthcare curriculum.
In rural Minnesota, it is common for paramedics providing advanced life support (ALS) to rendezvous with ambulances providing only basic life support (BLS). These “intercepts” presumably allow for a higher level of care when patients have certain problems or need ALS interventions. The aim of this study was to review and understand the frequency of para-medic intercepts with regard to the actual care rendered and transport urgency (lights and sirens vs. none).
Methods:
All paramedic intercepts occurring between January 2003 and December 2007 for one multi-site emergency medical services (EMS) provider were reviewed for ALS interventions and treatments provided. In addition, the urgency of responses to the dispatch call or “intercept” and transport to a receiving facility were analyzed.
Results:
During the study period, 1,675 paramedic intercepts occurred and were reviewed. The ALS ambulances responded to the dispatch emergently (lights and sirens) in 97.5% of intercepts (1,633), but emergently transported only 24.2% of the patients (405). Paramedics performed no interventions above BLS levels in 11.6% (194) of the cases. Of the remaining 1,481 patients who received ALS interventions, 955 (64.4%) received no treatment or diagnostic testing other than electrocardiographic monitoring, intravenous access, or both.
Conclusions:
A significant discrepancy between emergent responses and actual ALS care rendered during intercept calls was demonstrated. Given the significant rate of EMS worker fatalities and transferable patient care costs, further study is needed to determine whether costs and safety are potentially improved by decreasing emergent responses. Future directions include developing or emulating Medical Priority Dispatch System triage protocols for advanced services providing intercepts. In addition, further study of patient outcomes between intercept and non-intercept cases is necessary.
Abstract Providing prehospital care poses unique risks. Paramedics are essentially the only medical personnel who are routinely at the scene of violent episodes, and they are more likely to be assaulted than are other prehospital personnel. In addition to individual acts of violence, emergency medical services (EMS) providers now need to cope with tactical violence, defined as the deployment of extreme violence in a non-random fashion to achieve tactical or strategic goals. This study reviewed two topics; the readiness of EMS crews for violence in their environment and the impact of violence on the EMS crew member. This latter also evaluated the access and effectiveness of emotional support available to caregivers exposed to violent episodes.
The results of the survey indicate a significant lack of preparedness for situations involving tactical violence. A total of 89% of respondents either had never had such training or had been trained more than one year ago. Thirty-six percent of respondents had never engaged in a field exercise with other responding agencies, and 4.5% of respondents were not aware of who would be in charge in such an event. In addition, this study indicates that EMS crews are exposed to events with significant emotional impacts without access to appropriate training and adequate support.
Currently, there is little in the literature regarding the ability of rear seatbacks to act as a protective barrier from cargo in frontal crashes. However, it has been shown that unrestrained rear passengers pose a danger to front seat occupants. The association of rear seatback failures and intrusions with mortality and serious injury were examined.
Methods:
The Seattle CIREN database for restrained, rear-seat passengers in front-end crashes with seatback failure or intrusion was searched. Injury patterns and crash characteristics, including the role of unrestrained cargo were examined. Next, the National Automotive Sampling System- Crashworthiness Data System (NASS-CDS) database was queried for restrained rear-seat passengers in front-end crashes with recorded seat failure or intrusion. Mortality, maximum Abbreviated Injury Scale (AIS) score and mean Injury Severity Scale (ISS) scores were compared with passengers who had no failure or intrusion. Linear regression was used to identify the differences between the groups. Logistic regression was used to estimate the mortality risk associated with seat failure.
Results:
There were four CIREN cases that met the criteria. In each case, the occupant suffered significant injury or death. All four of the seat failures were the result of unrestrained cargo striking the seatback. The CDS data revealed a statistically significantly increased mortality (OR = 18.9, 95% CI = 14.0–25.7) associated with seat failure. Both the maximum AIS and mean of the ISS scores were higher in the failure/intrusion group (p <0.0001).
Conclusions:
Rear seatback failure/intrusion is associated with increased mortality and injury. Case reports suggest unrestrained cargo plays a significant role in these injuries.
Large, functional, disaster exercises are expensive to plan and execute, and often are difficult to evaluate objectively. Command and control in disaster medicine organizations can benefit from objective results from disaster exercises to identify areas that must be improved.
Objective:
The objective of this pilot study was to examine if it is possible to use performance indicators for documentation and evaluation of medical command and control in a full-scale major incident exercise at two levels: (1) local level (scene of the incident and hospital); and (2) strategic level of command and control. Staff procedure skills also were evaluated.
Methods:
Trained observers were placed in each of the three command and control locations. These observers recorded and scored the performance of command and control using templates of performance indicators. The observers scored the level of performance by awarding 2, 1, or 0 points according to the template and evaluated content and timing of decisions. Results from 11 performance indicators were recorded at each template and scores >11 were considered as acceptable.
Results:
Prehospital command and control had the lowest score. This also was expressed by problems at the scene of the incident. The scores in management and staff skills were at the strategic level 15 and 17, respectively; and at the hospital level, 17 and 21, respectively.
Conclusions:
It is possible to use performance indicators in a full-scale, major incident exercise for evaluation of medical command and control. The results could be used to compare similar exercises and evaluate real incidents in the future.
Although information is available to guide hospitals and clinics on the medical aspects of disaster surge, there is little guidance on how to manage the expected surge of persons needing psychological assessment and response after a catastrophic event. This neglected area of disaster medicine is addressed by presenting a novel and practical quality improvement tool for hospitals and clinics to use in planning for and responding to the psychological consequences of catastrophic events that create a surge of psychological casualties presenting for health care. Industrial quality improvement processes, already widely adopted in the healthcare sector, translate well when applied to disaster medicine and public health preparedness. This paper describes the development of the tool, presents data on facility preparedness from 31 hospitals and clinics in Los Angeles County, and discusses how the tool can be used as a benchmark for targeting improvement. The tool can serve to increase facility awareness of which components of disaster preparedness and response must be addressed through hospitals' and clinics' existing quality improvement programs. It also can provide information for periodic assessment and evaluation of progress over time.
During deployment following Hurricane Ike in September 2008, bites from domestic animals were among the top three trauma complaints seen at the National Disaster Medical System (NDMS) Disaster Medical Assistance Team (DMAT) base of operations.
Problem::
Unlike previous reports of frightened, misplaced dogs and cats biting strangers and rescue workers, there was an increase in bites associated with presumed non-rabid pets who were known to the bite victim.
Methods:
This was an observational sampling of all patients presenting for medical care during deployment to the AL-3 DMAT base of operations in Webster, Texas, following Hurricane Ike. Findings were compared with unofficial local norms and observations from the literature.
Results:
Of the people with animal bites presenting to the field hospital, dog bites accounted for 55%, cat bites, 40%, and snake bites, 5%. Most of the wounds required suturing and were not simple punctures. Most bites (70%) involved the hand(s). Some patients presented > 24 hours after the bite, and already had developed cellulitis. One patient required transfer and inpatient admission for intravenous antibiotics and debridement of a hand injury with spread into the metacarpophalangeal space.
Conclusions:
Most of the bites were severe and occurred within the first 72 hours after the hurricane, and waned steadily over the following weeks to baseline levels. No animal bites caused by misplaced dogs and cats biting strangers were seen. There was an increase in bites associated with domesticated pets known to the bite victim. The current NDMS cache is stocked adequately to care for most wounds caused by animal bites. However post-exposure rabies treatment is not part of the routine medications offered. For future disaster preparedness training, pet owners should be aware of the increased potential for dog and cat bites.
There is a scarcity of analytical data regarding mass-gathering medical care. The purpose of this study was to identify and evaluate the range and nature of illness and injury for patrons of an annual, multi-day, mass gathering.
Methods:
Encounter data from all patients seen by emergency physicians at the New York State Fair Infirmary during the past five years were analyzed. From these data, a category list was consolidated to 36 reasons for the visit based on chief complaint, nursing notes, and physician notes. The most common reasons for being seen by a physician were analyzed to determine age and gender discrepancies.
Results:
The average number of attendees at the Fair per year from 2004–2008 was 950,973. Emergency physicians evaluated a total of 2,075 patients from 2004–2008. The average patient presentation rate over the past four years (2005–2008) was 4.8 ±1.1/10,000 patrons. The average transport to hospital rate over the past four years was 2.7 ±1.1/100,000 patrons. The average age of all patients seen was 34.4 ±21.6 years, and 58.1% of the patients were female. The most common reasons to seek medical attention included: dehydration/heat-related illness (11.4%); abrasion/laceration (10.6%); and fall-related injury (10.2%). Two groups, dehydration/heat-related illness 74% (t (4) = 2.90, p <0.05), and fall-related injury (68%; t (4) = 5.17, p <0.05) were disproportionately female. There also was a direct relationship between age and female gender within the fall-related injury category (χ2 (1, n = 213) = 11.41, p <0.05).
Conclusions:
Patron data from fairs and expositions is a valuable resource for studying mass-gathering medical care. A majority (58%) of patients seen at the infirmary were female. The most common reason for being seen was dehydration/ heat-related illness, which heavily favored females, but favored no age groups. The abrasion/laceration category did not contribute to the gender discrepancy. Patients who fell tended to be females >40 years of age. Further analysis is required to determine the reason for the gender discrepancies. Planners of multi-day mass gatherings should develop public education programs and evaluate their impact on the at-risk populations identified by this analysis.
On 07 July 2005, four bombs were detonated in London, killing 52 members of the public. Approximately 700 individuals received treatment either at the scene or at nearby hospitals.
Hypothesis/Problem:
Significant concerns about the potential long-term psychological and physical health effects of exposure to the explosions were raised immediately after the bombings. To address these concerns, a public health register was established for the purpose of following-up with individuals exposed to the explosions.
Methods:
Invitations to enroll in the register were sent to individuals exposed to the explosions. A range of health, emergency, and humanitarian service records relating to the response to the explosions were used to identify eligible individuals. Follow-up was undertaken through self-administered questionnaires. The number of patients exposed to fumes, smoke, dust, and who experienced blood splashes, individuals who reported injuries, and the type and duration of health symptoms were calculated. Odds ratios of health symptoms by exposure for greater or less than 30 minutes were calculated.
Results:
A total of 784 eligible individuals were identified, of whom, 258 (33%) agreed to participate in the register, and 173 (22%) returned completed questionnaires between 8 to 23 months after the explosions. The majority of individuals reported exposure to fumes, smoke, or dust, while more than two-fifths also reported exposure to blood. In addition to cuts and puncture wounds, the most frequent injury was ear damage. Most individuals experienced health symptoms for less than four weeks, with the exception of hearing problems, which lasted longer. Four-fifths of individuals felt that they had suffered emotional distress and half of them were receiving counseling.
Conclusions:
The results indicated that the main long-term health effects, apart from those associated with traumatic amputations, were hearing loss and psychological disorders. While these findings provide a degree of reassurance of the absence of long-term effects, the low response rate limits the extent to which this can be extrapolated to all those exposed to the bombings. Given the importance of immediate assessment of the range and type of exposure and injury in incidents such as the London bombings, and the difficulties in contacting individuals after the immediate response phase, there is need to develop better systems for identifying and enrolling exposed individuals into post-incident health monitoring.