Showing papers in "Prehospital and Disaster Medicine in 2006"

International medical response to a natural disaster: lessons learned from the Bam earthquake experience.

Abstract: An earthquake measuring 6.5 on the Richter scale devastated Bam, Iran on the morning of 26 December 2003. Due to the great health demands and collapse of health facilities, international aid could have been a great resource in the area. Despite sufficient amounts and types of resources provided by international teams, the efficacy of international assistance was not supported in Bam, as has been experienced in similar events in other countries. Based on the observations in the region and collecting and analyzing documents about the disaster, this manuscript provides an overview of the medical needs during the disaster and describes the international medical response. The lessons learned include: (1) necessity of developing a national search and rescue strategy; (2) designing an alarm system; (3) establishing an international incident command system; (4) increasing the efficacy of the arrival and implementation of a foreign field hospital; and (5) developing a flowchart for deploying international assistance.

Surviving collapsed structure entrapment after earthquakes: a "time-to-rescue" analysis.

Abstract: INTRODUCTION: Massive earthquakes often cause structures to collapse, trapping victims under dense rubble for long periods of time. Commonly, this spurs resource intensive, dangerous, and frustrating attempts to find and extricate live victims. The search and rescue phase usually is maintained for many days beyond the last "save," potentially diverting critical attention and resources away from the pressing needs of non-trapped survivors and the devastated community. This recurring phenomenon is driven by the often-unanswered question "Can anyone still be alive under there?" The maximum survival time in entrapment is an important issue for responders, yet little formal research has been conducted on this issue. Knowing the maximum survival time in entrapment helps responders: (1) decide whether or not they should continue to assign limited resources to search and rescue activities; (2) assess the safety risks versus the benefits; (3) determine when search and rescue activities no longer are indicated; and (4) time and pace the important transition to community recovery efforts. METHODS: The time period of 1985-2004 was selected for investigation. Medline and Lexis-Nexis databases were searched for earthquake events that occurred within this timeframe. Medical literature articles providing time-torescue data for victims of earthquakes were identified. Lexis-Nexis reports were scanned to select those with time-to-rescue data for victims of earthquakes. Reports from both databases were examined for information that might contribute to prolonged survival of entrapped individuals. RESULTS: A total of 34 different earthquake events met study criteria. Forty-eight medical articles containing time-to-rescue data were identified. Of these, the longest time to rescue was "13-19 days" post-event (secondhand data and the author is not specific). The second longest time to rescue in the medical articles was 8.7 days (209 hours). Twenty-five medical articles report multiple rescues that occurred after two days (48 hours). Media reports describe rescues occurring beyond Day 2 in 18 of 34 earthquakes. Of these, the longest reliably reported survival is 14 days after impact, with the next closest having survived 13 days. The average maximum times reported from these 18 earthquakes was 6.8 days (median = 5.75 days). The event with the most media reports of distinct rescue events was the 1999 Marmara, Turkey earthquake (43 victims). Times range from 0.5 days (12 hours) to 6.2 days (146 hours) for this event. Both databases provide little formal data to develop detailed insight into factors affecting survivability during entrapment. CONCLUSIONS: A thorough search of the English-language medical literature and media accounts provides a provocative picture of numerous survivors beyond 48 hours of entrapment under rubble, with a few successfully enduring entrapment of 13-14 days. These data are not necessarily applicable to non-earthquake collapsed-structure events. For incident managers and their medical advisors, the study findings and discussion may be useful for post-impact decision-making and in establishing and/or revising incident priorities as the response evolves. Language: en

Sensitivity and specificity of the medical priority dispatch system in detecting cardiac arrest emergency calls in Melbourne.

Abstract: Introduction: In Australia, cardiac arrest kills 142 out of every 100,000 people each year; with only 3–4% of out-of-hospital patients with cardiac arrest in Melbourne surviving to hospital discharge. Prompt initiation of cardiopulmonary resuscitation (CPR), defibrillation, and advanced cardiac care greatly improves the chances of survival from cardiac arrest. A critical step in survival is identifying by the emergency ambulance dispatcher potential of the probability that the person is in cardiac arrest. The Melbourne Metropolitan Ambulance Service (MAS) uses the computerized call-taking system, Medical Priority Dispatch System (MPDS), to triage incoming, emergency, requests for ambulance responses. The MPDS is used in many emergency medical systems around the world, however, there is little published evidence of the system's efficacy. Objective: This study attempts to undertake a sensitivity/specificity analysis to determine the ability of MPDS to detect cardiac arrest. Methods: Emergency ambulance dispatch records of all cases identified as suspected cardiac arrest by MPDS were matched with ambulance, patient-care records and records from the Victorian Ambulance Cardiac Arrest Registry to determine the number of correctly identified cardiac arrests. Additionally, cases that had cardiac arrests, but were not identified correctly at the point of call-taking, were examined. All data were collected retrospectively for a three-month period (01 January through 31 March 2003). Results: The sensitivity of MPDS in detecting cardiac arrest was 76.7% (95% confidence interval (CI): 73.6%–79.8%) and specificity was 99.2% (95% CI: 99.1–99.3%). These results indicate that cardiac arrests are correctly identified in 76.7% of cases. Conclusion: Although the system correctly identified 76.7% of cardiac arrest cases, the number of false negatives suggests that there is room for improvement in recognition by MPDS to maximize chances for survival in out-of-hospital cardiac arrest. This study provides an objective and comprehensive measurement of the accuracy of MPDS cardiac-arrest detection in Melbourne, as well as providing a baseline for comparison with subsequent changes to the MPDS.

Assessing levels of hospital emergency preparedness.

Abstract: Introduction:Emergency preparedness can be defined by the preparedness pyramid, which identifies planning, infrastructure, knowledge and capabilities, and training as the major components of maintaining a high level of preparedness.The aim of this article is to review the characteristics of contingency plans for mass-casualty incidents (MCIs) and models for assessing the emergency preparedness of hospitals.Characteristics of Contingency Plans:Emergency preparedness should focus on community preparedness, a personnel augmentation plan, and communications and public policies for funding the emergency preparedness. The capability to cope with a MCI serves as a basis for preparedness for non-conventional events. Coping with chemical casualties necessitates decontamination of casualties, treating victims with acute stress reactions, expanding surge capacities of hospitals, and integrating knowledge through drills. Risk communication also is important.Assessment of Emergency Preparedness:An annual assessment of the emergency plan is required in order to assure emergency preparedness. Preparedness assessments should include: (1) elements of disaster planning; (2) emergency coordination; (3) communication; (4) training; (5) expansion of hospital surge capacity; (6) personnel; (7) availability of equipment; (8) stockpiles of medical supplies; and (9) expansion of laboratory capacities. The assessment program must be based on valid criteria that are measurable, reliable, and enable conclusions to be drawn. There are several assessment tools that can be used, including surveys, parameters, capabilities evaluation, and self-assessment tools.Summary:Healthcare systems are required to prepare an effective response model to cope with MCIs. Planning should be envisioned as a process rather than a production of a tangible product. Assuring emergency preparedness requires a structured methodology that will enable an objective assessment of the level of readiness.

What a disaster?! Assessing utility of simulated disaster exercise and educational process for improving hospital preparedness.

Abstract: INTRODUCTION: Recent events have brought disaster medicine into the public focus. Both the government and communities expect hospitals to be prepared to cope with all types of emergencies. Disaster simulations are the traditional method of testing hospital disaster plans, but a recent, comprehensive, literature review failed to find any substantial scientific data proving the benefit of these resource- and time-consuming exercises. OBJECTIVES: The objective of this study was to test the hypothesis that an audiovisual presentation of the hospital disaster plans followed by a simulated disaster exercise and debriefing improved staff knowledge, confidence, and hospital preparedness for disasters. METHODS: A survey of 50 members of the medical, nursing, and administrative staff were chosen from a pool of approximately 170 people likely to be in a position of responsibility in the event of a disaster. The pre-intervention survey tested factual knowledge as well as perceptions about individual and departmental preparedness. Post-intervention, the same 50 staff members were asked to repeat the survey, which included additional questions establishing their involvement in the exercise. RESULTS: There were 50 pre-intervention tests and 42 post-intervention tests. The intervention resulted in a significant improvement in test pass rate: pre-intervention pass rate 9/50 (18%, 95% confidence interval ((CI) = 16.1-19.9%) versus post-intervention pass rate 21/42 (50%, 95% CI = 42.4-57.6%; chi-square test, p = 0.002). Emergency department (ED) staff had a stronger baseline knowledge than non-ED staff: ED pre-test mean value for scores = 12.1 versus non-ED scores of 6.2 (difference 5.9, 95% CI = 3.3-8.4); t-test, p or = 1 component had a greater increase in mean scores: increase in mean attendees was 5.6, versus the scores of non-attendees of 2.7 (difference 2.9, 95% CI = 1.0-4.9); t-test, p = 0.004. There was no significant increase in the general perception of preparedness. However, the majority of those surveyed described the exercise of benefit to themselves (53.7%, 95% CI = 45.5-61.8%) and their department (63.2%, 95% CI = 53.5-72.8%). CONCLUSIONS: The disaster exercise and educational process had the greatest benefit for individuals and departments involved directly. The intervention also prompted enterprise-wide review, and an upgrade of disaster plans at departmental levels. Pre-intervention knowledge scores were poor. Post-intervention knowledge base remained suboptimal, despite a statistically significant improvement. This study supports the widely held belief that disaster simulation is a worthwhile exercise, but more must be done. More time and resources must be dedicated to the increasingly important field of hospital disaster preparedness. Language: en

National study of ambulance transports to United States emergency departments: importance of mental health problems.

Abstract: Introduction:Understanding ambulance utilization patterns is essential to assessing prehospital system capacity and preparedness at the national level.Objective:To describe the characteristics of patients transported to US emergency departments (EDs) by ambulance and to determine predictors of ambulance utilization.Methods:Data were obtained from the National Hospital Ambulatory Medical Care Survey using mode of arrival, demographic and visit information, ICD-9-CM E and V-codes, and classified reasons for the visit.Results:The rates for ED visits of persons conveyed by ambulence were stable between 1997 and 2003, consisting of approximately one in every seven ED visits (14%). In 2003, there were 16.2 million ED visits for which an ambulance was used in the US. However, for patients with mental health visits, nearly one in three ED presentations (31%) arrived by ambulance. Significantly higher rates of ambulance use were associated with: (1) mental health visits; (2) older age; (3) African-Americans; (4) Medicare or self-pay insurance status; (5) urban ED location; (6) US regions outside of the South; (7) presentation between 12 midnight to 0800 hours; (8) injury-related visits; (9) urgent visit status; and/or (10) those resulting in hospital admission. Among mental health patients, older age, self-pay insurance status, urban ED location, regions outside the southern US, and urgent visit classification predicted ambulance use. Ambulance usage within the mental health group was highest for suicide and lowest for mood and anxiety disorder-related visits.Conclusion:Reliance on ambulance services varies by age, insurance status, geographic factors, time of day, urgency of visit, subsequent admission status, and type of mental health disorder. Even after controlling for many confounding factors, mental health problems remain an important predictor of ambulance use.

Post-tsunami medical care: health problems encountered in the International Committee of the Red Cross Hospital in Banda Aceh, Indonesia.

Abstract: Introduction:When the Tsunami struck Asia on 26 December 2004, Aceh, Indonesia suffered more damage than did any other region. After the Tsunami, many humanitarian organizations provided aid in Aceh. For example, the International Committee of the Red Cross (ICRC), along with the Indonesian and Norwegian Red Cross opened a field hospital in Banda Aceh on 16 January 2005. This study describes the illnesses seen in the out-patient department/casualty department (OPD/CD) of the ICRC hospital nine weeks after the Tsunami. It describes the percentage of people seen for problems directly related to the Tsunami, and includes a basic screening for depression and post-traumatic stress disorder (PTSD).Methods:A prospective, five-day study was performed from 01–05 March 2005. Patients registering in the ICRC field hospital in Banda Aceh were considered for the study. Data collected included: (1) age; (2) gender; (3) diagnosis in the OPD/CD; and (4) whether or not the problem was related directly to the Tsunami. Seven basic questions were asked to screen for depression and PTSD symptoms.Results:Twelve percent of the problems seen in the OPD/CD nine weeks after the Tsunami still were related directly to the Tsunami. Sixty-three percent of patients in the study were male. The medical problems included: (1) urological (19%); (2) digestive (16%); (3) respiratory (12%); and (4) musculoskeletal (12%). Although <2% of patients were diagnosed with a mental health problem, 24% had at least four or more of the seven depression/PTSD symptoms addressed in the study.Conclusions:Post-earthquake and post-tsunami health problems and medical needs differ from those found in conflict zones. After the Tsunami, both surgical and primary healthcare teams were needed. Many problems were chronic medical problems, which may be indicative of the lack of healthcare infrastructure before the Tsunami. The findings suggest that mental health issues must be taken into consideration for future planning. The ethical issues of performing research in complex emergencies also need further development at the international level.

Frequency of post-traumatic stress disorder among relief force workers after the tsunami in Asia: do rescuers become victims?

Abstract: Objective:The objective of this study was to evaluate the frequency of posttraumatic stress disorder (PTSD) among the participants of the Turkish Red Crescent Disaster Relief Team after the Tsunami in Asia.Methods:The Clinician Administered PTSD Scale-1 (CAPS-1) was administered to 33 of 36 team members one month after their Disaster Relief Team duty. Along with the CAPS-1 interview, demographic features, profession, previous professional experience, previous experience with traumatic events and disasters also were recorded. To be classified as present, a symptom must have a frequency score of “1” and an intensity score of “2” at the CAPS-1 interview. For a diagnosis of PTSD, at least one re-experiencing, three avoidance and numbing, and two increased arousal symptoms should be present.Results:The PTSD was diagnosed in eight of the 33 (24.2%) participants. No significant difference was detected in the distribution of PTSD diagnosis according to gender, age, profession, professional experience, previous disaster experience, and/or previous experience of traumatic events. However, the severity of PTSD symptoms as measured by the CAPS-1 score was significantly higher in women, nurses, and participants with <3 previous disaster duty experiences.Conclusion:Post-traumatic stress disorder is prevalent within disaster teams and healthcare workers, and measures should be taken to prevent PTSD within this group.

Pediatric trauma at tertiary-level hospitals in the aftermath of the Bam, Iran Earthquake.

Abstract: The Bam Earthquake caused one of the most destructive disasters from naturally occurring hazards in recent years. Children are one of the most vulnerable age groups during disasters, in terms of both physical and psychological injuries. The assessment of pedatric injuries in the aftermath of the Bam Earthquake is discussed is this article. Within one week of the Earthquake, 119 patients Language: en

Role of exercises and drills in the evaluation of public health in emergency response.

Abstract: Introduction: Public health agencies have been participating in emergency preparedness exercises for many years. A poorly designed or executed exercise, or an unevaluated or inadequately evaluated plan, may do more harm than good if it leads to a false sense of security, and results in poor performance during an actual emergency. At the time this project began, there were no specific standards for the public health aspects of exercises and drills, and no defined criteria for the evaluation of agency performance in public health. Objective: The objective of this study was to develop defined criteria for the evaluation of agency performance. Method: A Delphi panel of 26 experts in the field participated in developing criteria to assist in the evaluation of emergency exercise performance, and facilitate measuring improvement over time. Candidate criteria were based on the usual parts of an emergency plan and three other frameworks used else- where in public health or emergency response. Results: The response rate from the expert panel for Delphi Round I was 74%, and for Delphi Round II was 55%. This final menu included 46 public health-agency level criteria grouped into nine categories for use in evaluating an emergency drill or exercise at the local public health level. Conclusion: Use of the public health-specific criteria developed through this process will allow for specific assessment and planning for measurable improvement in a health agency over time.

Transient modeling in simulation of hospital operations for emergency response.

Abstract: Rapid estimates of hospital capacity after an event that may cause a disaster can assist disaster-relief efforts. Due to the dynamics of hospitals, following such an event, it is necessary to accurately model the behavior of the system. A transient modeling approach using simulation and exponential functions is presented, along with its applications in an earthquake situation. The parameters of the exponential model are regressed using outputs from designed simulation experiments. The developed model is capable of representing transient, patient waiting times during a disaster. Most importantly, the modeling approach allows real-time capacity estimation of hospitals of various sizes and capabilities. Further, this research is an analysis of the effects of priority-based routing of patients within the hospital and the effects on patient waiting times determined using various patient mixes. The model guides the patients based on the severity of injuries and queues the patients requiring critical care depending on their remaining survivability time. The model also accounts the impact of prehospital transport time on patient waiting time.

Focus on smoke inhalation--the most common cause of acute cyanide poisoning.

Abstract: The contribution of smoke inhalation to cyanide-attributed morbidity and mortality arguably surpasses all other sources of acute cyanide poisoning. Research establishes that cyanide exposure is: (1) to be expected in those exposed to smoke in closed-space fires; (2) cyanide poisoning is an important cause of incapacitation and death in smoke-inhalation victims; and (3) that cyanide can act independently of, and perhaps synergistically with, carbon monoxide to cause morbidity and mortality. Effective prehospital management of smoke inhalation-associated cyanide poisoning is inhibited by: (1) a lack of awareness of fire smoke as an important cause of cyanide toxicity; (2) the absence of a rapidly returnable diagnostic test to facilitate its recognition; and (3) in the United States, the current unavailability of a cyanide antidote that can be used empirically with confidence outside of hospitals. Addressing the challenges of the prehospital management of smoke inhalation-associated cyanide poisoning entails: (1) enhancing the awareness of the problem among prehospital responders; (2) improving the ability to recognize cyanide poisoning on the basis of signs and symptoms; and (3) expanding the treatment options that are useful in the prehospital setting.

Hawaii physician and nurse bioterrorism preparedness survey.

Abstract: Introduction Physicians and nurses are integral components of the public health bioterrorism surveillance system. However, most published bioterrorism preparedness surveys focus on gathering information related to self-assessed knowledge or perceived needs and abilities. Objective A survey of physicians and nurses in Hawaii was conducted to assess objective knowledge regarding bioterrorism agents and diseases and perceived response readiness for a bioterrorism event. Methods During June and July 2004, an anonymous survey was mailed up to three times to a random sample of all licensed physicians and nurses residing in Hawaii. Results The response rate was 45% (115 of 255) for physicians and 53% (146 of 278) for nurses. Previous bioterrorism preparedness training associated significantly with knowledge-based test performance in both groups. Only 20% of physicians or nurses had had previous training in bioterrorism preparedness, and 70% expressed willingness to assist the state in the event of a bioterrorist attack. Conclusions Additional bioterrorism preparedness training should be made available through continuing education and also should become a component of both medical and nursing school curricula. It is important to provide the knowledge necessary for physicians and nurses to improve their ability to perform in the event of a bioterrorist attack.

Barriers to disaster coordination: health sector coordination in Banda Aceh following the South Asia Tsunami.

Abstract: Ecological disasters impact large populations every year, and hundreds of nongovernmental organizations, thousands of aid workers, and billions of dollars are sent in response. Yet, there have been recurring problems with coordination, leading to wasted efforts and funds. The humanitarian response to the December 2004 Earthquake and Tsunami in Asia was one of the largest ever, and coordination problems were apparent. The coordination processes and attempts at coordination are discussed in this paper. Specific barriers to cooperation are discussed, such as weak leadership, the absence of accountability, the lack of credentialing, the diverse goals of the responding agencies, and the weaknesses in the coordination process itself.

Pattern of drug prescription and utilization among Bam residents during the first six months after the 2003 Bam earthquake.

Abstract: Introduction: It is important to identify what kinds of drugs are required by disaster-affected populations so that appropriate donations are allocated. On 26 December 2003, an earthquake with an amplitude of 6.3 on the Richter scale struck southeastern Iran, decimating the city of Bam. In this study, the most frequently utilized and prescribed drugs for Bam outpatients during the first six months after the Bam Earthquake were investigated. Methods: In this descriptive, cross-sectional study, the data were collected randomly from 3,000 prescriptions of Bam outpatients who were examined by general practitioners from Emergency Medical Assistance Teams in 12 healthcare centers during the first six months after the Bam Earthquake. The data were analyzed for: (1) patient sex; (2) number of drugs/prescriptions; (3) drug category; (4) drug name (generic or brand); (5) route of administration; (6) percent of visits where the most frequent drug categories were prescribed; and (7) the 25 most frequently prescribed drugs, using World Health Organization (WHO) indicators of drug use in health facilities. Results: Male patients represented 47.4% and females 52.6% of the total number of outpatients. The mean number of drugs/prescriptions was 3.5 per outpatient. Oral administration was the most frequent method of administration (81.7%), followed by injections (10.9%). Respiratory drugs were the most frequently used drugs (14.2%), followed by analgesics/non-steroidal anti-inflammatory drugs (non-steroidal anti-inflammatory drugs) (11.3%), antibacterials (11.2%), gastroinestinal (GI) drugs (9.6%), and central nervous system drugs (7%). Penicillins (6.8%), cold preparations (8%), and systemic anti-acids (ranitidine and omeprazole) were among the 25 most frequently used drugs by outpatients and inhabitants of Bam during the first six months after the Bam Earthquake. Conclusion: Respiratory, analgesic, antibacterial, gastrointestinal, and psychiatric medications were among the most commonly prescribed pharmaceuticals after the catastrophic Bam Earthquake.The results of this study may help to predict the needs of patients during future disasters and prevent unnecessary donations of medicine.

Accentuate the Positive

Abstract: In business today performance management, assessment centre activity and training and development interventions tend to focus on what is failing: identifying individual and collective areas for development and forming an action plan around the steps to take to improve these. In this article the authors argue for accentuating the positive, placing more weight on identifying and building on personal strengths as a way of enhancing performance. They outline why and how this need can be addressed.

Precision of in-hospital triage in mass-casualty incidents after terror attacks.

Abstract: Introduction:Proper management of mass-casualty incidents (MCIs) relies on triage as a critical component of the disaster plan.Objective:The objective of this study was to assess the precision of triage in mass-casualty incidents.Methods:The precision of decisions made by two experienced triage officers was examined in two large MCIs. These decisions were compared to the real severity of injury as defined by the Israeli Defence Forces (IDF) classification of severity of injuries and the Injury Severity Score (ISS).Results:Two experienced trauma physicians triaged a total of 94 casualties into 77 mild, seven moderate, and 10 severe casualties. Based on the IDF criteria, there were 74 mild, five moderate, and 15 severe casualties. Based on ISS scoring, there were 78 mild (ISS <9), five moderate (9 ≤ISS<16), and 11 severe (ISS < 16) casualties. Of 15 severely injured victims defined by the IDF classification of injury severity, the triage officers identified only seven (47%).Conclusion:Primary triage, even when carried out by experienced trauma physicians, can be unreliable in a MCI.

Predictive Effect of Out-of-Hospital Time in Outcomes of Severely Injured Young Adult and Elderly Patients

Abstract: Introduction:The importance of accessing care within the first hour after injury has been a fundamental tenet of trauma system planning for 30 years. However, the scientific basis for this belief either has been missing or largely derived from case series from trauma centers. This study sought to determine the correlation between prehospital times and outcomes among severely injured elderly patients.Methods:This is a cross-sectional, observational study. All adults ( _18 years of age. Of the 1,866 with an Injury Severity Score (ISS) >15, 1,205 were young and 661 elderly. Logistic regression results showed that prehospital time correlated significantly with hospital length of stay (p = 0.001) and complications (p = 0.016), but not with mortality (p = 0.264) among young patients, whereas in the elderly group prehospital time had no significant predictive effect for length of stay, complica- tions, or mortality (p = 0.512, p = 0.512, and p = 0.954 respectively).Conclusion:This population-based study has demonstrated that prehospital time correlates with length of stay and complications in young patients. In elderly patients, prehospital time failed to show correlation with any outcomes measured.

Disaster management following the Chi-Chi earthquake in Taiwan.

Abstract: The earthquake that occurred in Taiwan on 21 September 1999 killed >2,000 people and severely injured many survivors. Despite the large scale and sizeable impact of the event, a complete overview of its consequences and the causes of the inadequate rescue and treatment efforts is limited in the literature. This review examines the way different groups coped with the tragedy and points out the major mistakes made during the process. The effectiveness of Taiwan's emergency preparedness and disaster response system after the earthquake was analyzed. Problems encountered included: (1) an ineffective command center; (2) poor communication; (3) lack of cooperation between the civil government and the military; (4) delayed prehospital care; (5) overloading of hospitals beyond capacity; (6) inadequate staffing; and (7) mismanaged public health measures. The Taiwan Chi-Chi Earthquake experience demonstrates that precise disaster planning, the establishment of one designated central command, improved cooperation between central and local authorities, modern rescue equipment used by trained disaster specialists, rapid prehospital care, and medical personnel availability, as well earthquake-resistant buildings and infrastructure, are all necessary in order to improve disaster responses. Language: en

Rapid needs assessment of Hurricane Katrina evacuees-Oklahoma, September 2005.

Abstract: INTRODUCTION: On 04 September 2005, 1,589 Hurricane Katrina evacuees from the New Orleans area arrived in Oklahoma. The Oklahoma State Department of Health conducted a rapid needs assessment of the evacuees housed at a National Guard training facility to determine the medical and social needs of the population in order to allocate resources appropriately. METHODS: A standardized questionnaire that focused on individual and household evacuee characteristics was developed. Households from each shelter building were targeted for surveying, and a convenience sample was used. RESULTS: Data were collected on 197 households and 373 persons. When compared with the population of Orleans Parish, Louisiana, the evacuees sampled were more likely to be male, black, and 45-64 years of age. They also were less likely to report receiving a high school education and being employed pre-hurricane. Of those households of > 1 persons, 63% had at least one missing household member. Fifty-six percent of adults and 21% of children reported having at least one chronic disease. Adult women and non-black persons were more likely to report a pre-existing mental health condition. Fourteen percent of adult evacuees reported a mental illness that required medication pre-hurricane, and eight adults indicated that they either had been physically or sexually assaulted after the hurricane. Approximately half of adults reported that they had witnessed someone being severely injured or dead, and 10% of persons reported that someone close to them (family or friend) had died since the hurricane. Of the adults answering questions related to acute stress disorder, 50% indicated that they suffered at least one symptom of the disorder. CONCLUSIONS: The results from this needs assessment highlight that the evacuees surveyed predominantly were black, of lower socio-economic status, and had substantial, pre-existing medical and mental health concerns. The evacuees experienced multiple emotional traumas, including witnessing grotesque scenes and the disruption of social systems, and had pre-existing psychopathologies that predisposed this population to post-traumatic stress disorder (PTSD). When disaster populations are displaced, mental health and social service providers should be available immediately upon the arrival of the evacuees, and should be integrally coordinated with the relief response. Because the displaced population is at high risk for disaster-related mental health problems, it should be monitored closely for persons with PTSD. This displaced population will likely require a substantial re-establishment of financial, medical, and educational resources in new communities or upon their return to Louisiana. Language: en

Using innovative simulation modalities for civilian-based, chemical, biological, radiological, nuclear, and explosive training in the acute management of terrorist victims: A pilot study

Abstract: OBJECTIVES: Chemical, biological, radiological, nuclear, and explosive (CBRNE) incidents are low frequency, high impact events that require specialized training outside of usual clinical practice. Educational modalities must recreate these clinical scenarios in order to provide realistic first responder/receiver training. METHODS: High fidelity, mannequin-based (HFMB) simulation and video clinical vignettes were used to create a simulation-based CBRNE course directed at the recognition, triage, and resuscitation of contaminated victims. The course participants, who consisted of first responders and receivers, were evaluated using a 43-question pre- and post-test that employed 12 video clinical vignettes as scenarios for the test questions. The results of the pre-test were analyzed according to the various medical training backgrounds of the participants to identify differences in baseline performance. A Scheffe post-hoc test and an ANOVA were used to determine differences between the medical training backgrounds of the participants. For those participants who completed both the pre-course and post-course test, the results were compared using a paired Student's t-test. RESULTS: A total of 54 first responders/receivers including physicians, nurses, and paramedics completed the course. Pre-course and post-course test results are listed by learner category. For all participants who took the pre-course test (n = 67), the mean value of the test scores was 53.5 +/- 12.7%. For all participants who took the post-course test (n = 54), the mean value of the test scores was 78.3 +/-10.9%. The change in score for those who took both the pre- and post-test (n = 54) achieved statistical significance at all levels of learner. CONCLUSIONS: The results suggest that video clinical vignettes and HFMB simulation are effective methods of CBRNE training and evaluation. Future studies should be conducted to determine the educational and cost-effectiveness of the use of these modalities. Language: en

Terrorism involving cyanide: the prospect of improving preparedness in the prehospital setting.

Abstract: The potential for domestic or international terrorism involving cyanide has not diminished and in fact may have increased in recent years. This paper discusses cyanide as a terrorist weapon and the current state of readiness for a cyanide attack in the United States. Many of the factors that render cyanide appealing to terrorists are difficult to modify sufficiently to decrease the probability of a cyanide attack. For example, the relative ease with which cyanide can be used as a weapon without special training, its versatile means of delivery to intended victims, and to a large degree, its ready availability cannot be significantly modified through preparedness efforts. On the other hand, the impact of an attack can be mitigated through preparedness measures designed to minimize the physical, psychological, and social consequences of cyanide exposure. Although the nation remains ill-equipped to manage a cyanide disaster, significant progress is being realized in some aspects of preparedness. Hydroxocobalamin-a cyanide antidote that may be appropriate for use in the prehospital setting for presumptive cases of cyanide poisoning-currently is under development for potential introduction in the US. If it becomes available in the US, hydroxocobalamin could enhance the role of the prehospital emergency responder in providing care to victims of a cyanide disaster. Additional progress is required in the areas of ensuring local and regional availability of antidotal treatment and supportive interventions, educating emergency healthcare providers about cyanide poisoning and its management, and raising public awareness of the potential for a cyanide attack and how to respond. Language: en

Health conditions and risk factors of sheltered persons displaced by Hurricane Katrina.

Abstract: INTRODUCTION During disasters, public health departments assume the role of maintaining the health of displaced persons. Displaced persons arrive with acute and chronic conditions as well as other risk factors. Descriptions of these conditions may aid future shelter planning efforts. METHODS Approximately 4000 individuals from New Orleans, displaced by Hurricane Katrina, were sheltered in Austin, Texas. A stratified random sample of the population was selected using individual beds as the primary sampling unit. Adults were interviewed about their acute symptoms, chronic diseases, and other risk factors. RESULTS The results indicate a substantial proportion of adults arrived with some symptoms of acute illness (49.8%). A majority of the adults reported living with a chronic condition (59.0%), and the prevalence of some chronic conditions was higher than that of the general population. Also, several factors that could complicate service delivery were prevalent. DISCUSSION Acute illnesses present transmission risks within the shelter. Furthermore, chronic diseases must be managed and may complicate care of acute illnesses. Risks like activity limitation or substance abuse may complicate shelter operations. Defining the potential scope of the illness burden may be used to help public health departments better plan the services they must deliver to displaced populations.

Realities of rural emergency medical services disaster preparedness.

Abstract: INTRODUCTION: Disaster preparedness is an area of major concern for the medical community that has been reinforced by recent world events. The emergency healthcare system must respond to all types of disasters, whether the incidents occur in urban or rural settings. Although the barriers and challenges are different in the rural setting, common areas of preparedness must be explored. PROBLEM: This study sought to answer several questions, including: (1) What are rural emergency medical services (EMS) organizations training for, compared to what they actually have seen during the last two years?; (2) What scale and types of events do they believe they are prepared to cope with?; and (3) What do they feel are priority areas for training and preparedness? METHODS: Data were gathered through a multi-region survey of 1801 EMS organizations in the US to describe EMS response experiences during specific incidents as well as the frequency with which these events occur. Respondents were asked a number of questions about local priorities. RESULTS: A total of 768 completed surveys were returned (43%). Over the past few years, training for commonly occurring types of crises and emergencies has declined in favor of terrorism preparedness. Many rural EMS organizations reported that events with 10 or fewer victims would overload them. Low priority was placed on interacting with other non-EMS disaster response agencies, and high priority was placed on basic staff training and retention. CONCLUSION: Maintaining viable, rural, emergency response capabilities and developing a community-wide response to natural or man-made events is crucial to mitigate long-term effects of disasters on a local healthcare system. The assessment of preparedness activities accomplished in this study will help to identify common themes to better prioritize preparedness activities and maximize the response capabilities of an EMS organization. Language: en

Team Echo: Observations and Lessons Learned in the Recovery Phase of the 2004 Asian Tsunami

Abstract: The 26 December 2004 Tsunami resulted in a death toll of >270,000 persons, making it the most lethal tsunami in recorded history. This article presents performance data observations and the lessons learned by a civilian team dispatched by the Australian government to "provide clinical and surgical functions and to make public health assessments". The team, prepared and equipped for deployment four days after the event, arrived at its destination 13 days after the Tsunami. Aspiration pneumonia, tetanus, and extensive soft tissue wounds of the lower extremities were the prominent injuries encountered. Surgical techniques had to be adapted to work in the austere environment. The lessons learned included: (1) the importance of team member selection; (2) strategies for self-sufficiency; (3) personnel readiness and health considerations; (4) race-to-face handover; (5) coordination and liaison; (6) the characteristics of injuries; (7) the importance of protocols for patient discharge and hospital staffing; and (8) requirements for interpreter services. Whereas disaster medical relief teams will be required in the future, the composition and equipment needs will differ according to the nature of the disaster. National teams should be on standby for international response.

Control of hemorrhage in critical femoral or inguinal penetrating wounds--an ultrasound evaluation.

Abstract: Introduction: Exsanguination from a femoral artery wound can occur in sec- onds and may be encountered more often due to increased use of body armor. Some military physicians teach compression of the distal abdominal aorta (AA) with a knee or a fist as a temporizing measure. Objective: The objective of this study was to evaluate if complete collapse of the AA was feasible and with what weight it occurs. Methods: This was a prospective, interventional study at a Level-I, academ- ic, urban, emergency department with an annual census of 80,000 patients. Written, informed consent was obtained from nine male volunteers after Institutional Research Board approval. Any patient who presented with abdominal pain or had undergone previous abdominal surgery was excluded from the study. Subjects were placed supine on the floor to simulate an injured soldier. Various dumbbells of increasing weight were placed over the distal AA, and pulsed-wave Doppler measurements were taken at the right com- mon femoral artery (CFA). Dumbbells were placed on top of a tightly bun- dled towel roughly the surface area of an adult knee. Flow measurements at the CFA were taken at increments of 20 pounds. This was repeated with weight over the proximal right artery iliac and distal right iliac artery to eval- uate alternate sites. Descriptive statistics were utilized to evaluate the data. Results: The mean velocity through the CFA was 75.8 cm/sec at 0 pounds. Compression of the AA ranging 80 to 140 pounds resulted in no flow in the CFA. A steady decrease in mean flow velocity was seen starting with 20 pounds. Flow velocity decreased more rapidly with compression of the prox- imal right iliac artery, and stopped in all nine volunteers by 120 pounds of pressure. For all nine volunteers, up to 80 pounds of pressure over the distal iliac artery failed to decrease CFA flow velocity, and no subject was able to tolerate more weight at that location. Conclusion n: Flow to the CFA can be stopped completely with pressure over the distal AA or proximal iliac artery in catastrophic wounds. Compression over the proximal iliac artery worked best, but a first responder still may need to apply upward of 120 pounds of pressure to stop exsanguination.

Performance indicators as quality control for testing and evaluating hospital management groups: a pilot study.

Abstract: Introduction: An important issue in disaster medicine is the establishment of standards that can be used as a template for evaluation. With the establish- ment of standards, the ability to compare results will improve, both within and between different organizations involved in disaster management. Objective: Performance indicators were developed for testing in simulations exercises with the purpose of evaluating the skills of hospital management groups. The objective of this study is to demonstrate how these indicators can be used to create numerically expressed results that can be compared. Methods: Three different management groups were tested in standardized simulation exercises. The testing took place according to the organization's own disaster plan and within their own facilities. Trained observers used a pre- designed protocol of performance indicators as a template for the evaluation. Results: The management group that scored lowest in management skills also scored lowest in staff skills. Conclusion n: The use of performance indicators for evaluating the manage- ment skills of hospital groups can provide comparable results in testing situ- ations and could provide a new tool for quality improvement of evaluations of real incidents and disasters.

Acute cyanide poisoning in prehospital care: new challenges, new tools for intervention.

Abstract: Effective management of cyanide poisoning from chemical terrorism, inhalation of fire smoke, and other causes constitutes a critical challenge for the prehospital care provider. The ability to meet the challenge of managing cyanide poisoning in the prehospital setting may be enhanced by the availability of the cyanide antidote hydroxocobalamin, currently under development for potential introduction in the United States. This paper discusses the causes, recognition, and management of acute cyanide poisoning in the prehospital setting with emphasis on the emerging profile of hydroxocobalamin, an antidote that may have a risk:benefit ratio suitable for empiric, out-of-hospital treatment of the range of causes of cyanide poisoning. If introduced in the U.S., hydroxocobalamin may enhance the role of the U.S. prehospital responder in providing emergency care in a cyanide incident. Language: en

Impact of London's Terrorist Attacks on a Major Trauma Center in London

Abstract: During the morning rush hour on Thursday, 07 July 2005, a series of four bombs exploded, affecting London's public transport system. These terrorist attacks killed 52 people and injured > 700. A major incident was declared, and the Royal London Hospital (RLH) was a primary receiving hospital. A total of 194 patients presented to the RLH. Twenty-seven patients required admission. A total of 11 amputations were performed on eight patients. One patient died intra-operatively. Another patient died on Day 6 due to complications related to a head injury. Coordination is vital to the implementation of the hospital's Major Incident Plan in such an emergency. Subsequent internal reviews of the response of the RLH on 07 July 2005 highlighted problems with communication and documentation, as well as the need for extra staffing. These areas should be improved for the management of future major incidents. Language: en

Success and complication rates with prehospital placement of an esophageal-tracheal combitube as a rescue airway.

Abstract: Introduction: Previous studies have proven the success of the EsophagealTracheal Combitube (ETC) as a primary airway, but not as a rescue airway. Objective: The object of this study was to observe success and complication rates of paramedic placement of an ETC as a rescue airway, and to compare success rates with endotracheal tube (ETT) intubation. The primary outcome indicator was placement with successful ventilation. Complication rates, esophageal placement, and return of spontaneous circulation (ROSC) were secondary measures. Methods: A retrospective review of the records of patients who had ETC attempts by Emergency Medical Services (EMS) was conducted for a period of three years. Complications were defined a priori . The ETC is used primarily as rescue airway for a failed attempt at an endotracheal tube (ETT) intubation. A control group for ETT placements was drawn from the EMS quality assurance (QA) database for the same period. Results: Esophageal-Tracheal Combitube insertion was attempted on 162 patients, of which, 113 (70%) were successful, 46 (28%) failed, and the outcome of three (2%) was not recorded. Inability to place the ETC occurred in 29 (18%) patients, and accounted for 48% (22/46) of failures. The use of the ETC caused dental trauma in one patient, and one placement of the ETC was related to the onset of subcutaneous emphysema. Blood in the ETC from active upper gatrointestinal bleeding occurred in nine patients (6%), and four tubes (3%) became dislodged en route to the hospital. The a priori complication rate was 44/162 (27%). Inability to determine placement of the ETC due to emesis from both ports occurred in 21 cases. Combining these problems with the a priori complications, the overall rate was 40% (65/162). EsophagealTracheal Combitube location was noted in a subset of 90 charts, of which, 76 (84%) were esophageal, and 14 (16%) were tracheal. Thirteen of 126 (10%) patients in cardiac arrest had return of spontaneous circulation (ROSC) in the field after placement of the ETC. An ETT was attempted in 128 control patients, of which, 107 (84%) were successful, 21 (16%) failed (odds ratio (OR) for ETT vs. ETC = 2.1; 95% CI = 1.12–3.86). Conclusion: Despite a low ROSC rate, the complication and success rates of ETC are acceptable for a rescue airway device. Tracheal placement of the Combitube is uncommon, but requires fail-safe discrimination. Similar to previous reports, the success ratio for ETT was greater than for the ETC.