The frequency of occurrence of natural disasters has increased over the past several decades, which necessitates a better understanding of human vulnerability, particularly in low-resource settings. This paper assesses risk factors for injury in the March 2010 floods and landslides in Eastern Uganda, and compares the effects of location, injury type, and severity.

A stratified cluster survey of the disaster-affected populations was conducted five months after onset of the disasters. Probability proportional to size sampling was used to sample 800 households, including 400 affected by floods in Butaleja District and 400 affected by landslides in Bududa District.

Flood- and landslide-affected populations were surveyed in July 2010 using a stratified cluster design. The odds of injury were 65% higher in the flood-affected groups than the landslide-affected groups in a logistic regression (OR = 0.35; 95% CI, 0.24-0.52; P < .001). The injury rate was greater in individuals under 42 years of age, and location of injury was a contributing factor. More people were injured in the flood-affected population as compared with the landslide-affected population, and injuries were more severe.

This study illustrates differences between populations injured by flood and landslide disasters that occurred simultaneously in Eastern Uganda in 2010. In areas where landslides are prone to occur due to massive rainfalls or floods, preventative measures, such as early warning systems and evacuation, are more likely to increase the likelihood of people surviving, while for areas with massive floods, immediate and effective medical attention can save lives and improve injury outcomes.

AgrawalS, GopalakrishnanT, GorokhovichY, DoocyS. Risk Factors for Injuries in Landslide- and Flood-Affected Populations in Uganda. Prehosp Disast Med. 2013;28(4):1-9.

Providing comprehensive emergency preparedness training (EPT) to care providers is important to the future success of disaster operations in the US. Few EPT programs possess both competency-driven goals and metrics to measure performance during a multi-patient simulated disaster.

A 1-day (8-hour) EPT course for care providers was developed to enhance provider knowledge, skill, and comfort necessary to save lives during a simulated disaster. Nine learning objectives, 18 competencies, and 34 performance objectives were developed. During the 2-year demonstration of the curriculum, 24 fourth-year medical students and 17 Veterans Hospital Administration (VHA) providers were recruited and volunteered to take the course (two did not fully complete the research materials). An online pre-test, two post-tests, course assessment, didactic and small group content, and a 6-minute clinical casualty scenario were developed. During the scenario, trainees working in teams were confronted with three human simulators and 10 actor patients simultaneously. Unless appropriate performance objectives were met, the simulators “died” and the team was exposed to “anthrax.” After the scenario, team members participated in a facilitator-led debriefing using digital video and then repeated the scenario.

Trainees (N = 39) included 24 (62%) medical students; seven (18%) physicians; seven (18%) nurses; and one (3%) emergency manager. Forty-seven percent of the VHA providers reported greater than 16 annual hours of disaster training, while 15 (63%) of the medical students reported no annual disaster training. The mean (SD) score for the pre-test was 12.3 (3.8), or 51% correct, and after the training, the mean (SD) score was 18.5 (2.2), or 77% (P < .01). The overall rating for the course was 96 out of 100. Trainee self-assessment of “Overall Skill” increased from 63.3 out of 100 to 83.4 out of 100 and “Overall Knowledge” increased from 49.3 out of 100 to 78.7 out of 100 (P < .01). Of the 34 performance objectives during the disaster scenario, 23 were completed by at least half of the teams during their first attempt. All teams except one (8 of 9) could resuscitate two simulators and all teams (9 of 9) helped prevent anthrax exposure during their second scenario attempt.

The 1-day EPT course for novice and experienced care providers recreated a multi-actor clinical disaster and enhanced provider knowledge, comfort level, and EPT skill. A larger-scale study, or multi-center trial, is needed to further study the impact of this curriculum and its potential to protect provider and patient lives.

ScottLA, SwartzentruberD, DavisCA, MadduxPT, SchnellmanJ, WahlquistAE. Competency in Chaos: Lifesaving Performance of Care Providers Utilizing a Competency-Based, Multi-Actor Emergency Preparedness Training Curriculum. Prehosp Disaster Med. 2013;28(4):1-12.

The objectives of this study were to develop a novel training model for using mass-casualty incident (MCI) scenarios that trained hospital and prehospital staff together using Microsoft Visio, images from Google Earth and icons representing first responders, equipment resources, local hospital emergency department bed capacity, and trauma victims. The authors also tested participants’ knowledge in the areas of communications, incident command systems (ICS), and triage.

Participants attended Managing Multiple-Casualty Incidents (MCIs), a one-day training which offered pre- and post-tests, two one-hour functional exercises, and four distinct, one-hour didactic instructional periods. Two MCI functional exercises were conducted. The one-hour trainings focused on communications, National Incident Management Systems/Incident Command Systems (NIMS/ICS) and professional roles and responsibilities in NIMS and triage. The trainings were offered throughout communities in western Montana. First response resource inventories and general manpower statistics for fire, police, Emergency Medical Services (EMS), and emergency department hospital bed capacity were determined prior to MCI scenario construction. A test was given prior to and after the training activities.

A total of 175 firefighters, EMS, law enforcement, hospital personnel or other first-responders completed the pre- and post-test. Firefighters produced higher baseline scores than all other disciplines during pre-test analysis. At the end of the training all disciplines demonstrated significantly higher scores on the post-test when compared with their respective baseline averages. Improvements in post-test scores were noted for participants from all disciplines and in all didactic areas: communications, NIMS/ICS, and triage.

Mass-casualty incidents offer significant challenges for prehospital and emergency room workers. Fire, Police and EMS personnel must secure the scene, establish communications, define individuals’ roles and responsibilities, allocate resources, triage patients, and assign transport priorities. After emergency department notification and in advance of arrival, emergency department personnel must assess available physical resources and availability and type of manpower, all while managing patients already under their care. Mass-casualty incident trainings should strengthen the key, individual elements essential to well-coordinated response such as communications, incident management system and triage. The practice scenarios should be matched to the specific resources of the community. The authors also believe that these trainings should be provided with all disciplines represented to eliminate training “silos,” to allow for discussion of overlapping jurisdictional or organizational responsibilities, and to facilitate team building.

GlowSD, ColucciVJ, AllingtonDR, NoonanCW, HallEC. Managing Multiple-Casualty Incidents: A Rural Medical Preparedness Training Assessment. Prehosp Disaster Med. 2013;28(4):1-8.

Much attention has been given to the strategic placement of automated external defibrillators (AEDs). The purpose of this study was to examine the correlation of strategically placed AEDs and the actual location of cardiac arrests.

A retrospective review of data maintained by the Maryland Institute for Emergency Medical Services Systems (MIEMSS), specifically, the Maryland Cardiac Arrest Database and the Maryland AED Registry, was conducted. Location types for AEDs were compared with the locations of out-of-hospital cardiac arrests in Howard County, Maryland. The respective locations were compared using scatter diagrams and r2 statistics.

The r2 statistics for AED location compared with witnessed cardiac arrest and total cardiac arrests were 0.054 and 0.051 respectively, indicating a weak relationship between the two variables in each case. No AEDs were registered in the three most frequently occurring locations for cardiac arrests (private homes, skilled nursing facilities, assisted living facilities) and no cardiac arrests occurred at the locations where AEDs were most commonly placed (community pools, nongovernment public buildings, schools/educational facilities).

A poor association exists between the location of cardiac arrests and the location of AEDs.

LevyMJ, SeamanKG, MillinMG, BissellRA, JenkinsJL. A Poor Association Between Out-of-Hospital Cardiac Arrest Location and Public Automated External Defibrillator Placement. Prehosp Disaster Med. 2013;28(4):1-6.

The prevalence of Methicillin-resistant Staphylococcus aureus (MRSA) nasal colonization among Emergency Medical Services (EMS) personnel is not well studied. Methicillin-resistant Staphylococcus aureus colonization can be a health hazard for both EMS personnel and patients. The aim of this study was to quantify the prevalence of MRSA colonization among EMS personnel. This study will help the scientific community understand the extent of this condition so that further protocols and policies can be developed to support the health and wellbeing of EMS personnel.

The hypothesis of this study was that the prevalence of MRSA colonization among EMS personnel is significantly higher than among the general population.

This was a cross-sectional study. A total of 110 subjects were selected from two major US Mid-Atlantic fire departments. Methicillin-resistant Staphylococcus aureus colonization was detected by nasal swabbing. Nasal swabs were inoculated onto a special agar medium (C-MRSAgar) with polymerase chain reaction testing performed. One-sided binomial distribution at the StudySize 2.0 Web calculator was used. Using the Web calculator, p (H0 proportion) = 1.5%; a difference (H1-H0) ‘Δ’ = 4.53% can be detected at α = 5% and power = 80% with N = 110.

Samples were collected from 110 volunteers. Seven samples were positive for MRSA, resulting in a prevalence of 7/110 or 6.4% (95% CI, 1.8%-11%; P < .0003) compared with a 1.5% prevalence of MRSA colonization among the general population.

There is evidence that EMS personnel have a higher prevalence of MRSA colonization than the general population. This can be a risk to patients and can be recognized as an occupational hazard.

Al AmiryA, BissellRA, MaguireBJ, AlvesDW. Methicillin-Resistant Staphylococcus Aureus Nasal Colonization Prevalence among Emergency Medical Services Personnel. Prehosp Disaster Med. 2013;28(4):1-5.

Health care institutions constantly must be prepared for disaster response. However, there are deficiencies in the current level of preparedness. The aim of this study was to investigate the factors affecting the perception of health care workers (HCWs) towards individual and institutional preparedness for a disaster.

A survey on disaster incident preparedness was conducted among doctors, nurses, and allied health workers over a period of two months in 2010. The survey investigated perceptions of disaster preparedness at the individual and institutional level. Responses were measured using a five-point Likert scale. The primary outcomes were factors affecting HCWs’ perception of institution and individual preparedness. Secondary outcomes were the proportions of staff willing to participate and to place importance on disaster response training and their knowledge of access to such training. Data was analyzed using descriptive statistics. Logistic regression was performed to determine the factors that influenced the HCWs’ perception of their individual and institutional readiness. Odd ratios (ORs) of such factors were reported with their 95% confidence intervals (CIs).

Of 1700 HCWs, 1534 (90.2%) completed the survey. 75.3% (1155/1534) felt that the institution was ready for a disaster incident, but only 36.4% (558/1534) felt that they (as individuals) were prepared. Some important factors associated with a positive perception of institution preparedness were leadership preparedness (OR = 13.19; 95% CI, 9.93-17.51), peer preparedness (OR = 6.11; 95% CI, 4.27-8.73) and availability of training opportunities (OR = 4.76; 95% CI, 3.65-6.22). Some important factors associated with a positive perception of individual preparedness were prior experience in disaster response (OR = 2.80; 95% CI, 1.99-3.93), institution preparedness (OR = 3.71; 95% CI, 2.68-5.14), peer preparedness (OR = 3.49; 95% CI, 2.75-4.26), previous training in disaster response (OR = 3.48; 95% CI, 2.76-4.39) and family support (OR = 3.22; 95% CI, 2.54-4.07). Most (80.7%, 1238/1534) were willing to participate in future disaster incident response training, while 74.5% (1143/1534) felt that being able to respond to a disaster incident constitutes part of their professional competency. However, only 27.8% (426/1534) knew how to access these training opportunities.

This study demonstrated that HCWs fare poorly in their perception of their individual preparedness. Important factors that might contribute to improving this perception at the individual and institution level have been identified. These factors could guide the review and implementation of future disaster incident response training in health care institutions.

LimGH, LimBL, VasuA. Survey of Factors Affecting Health Care Workers’ Perception Towards Institutional and Individual Disaster Preparedness. Prehosp Disaster Med. 2013;28(4):1-6.

The health of people with chronic medical conditions is particularly vulnerable to the disruptions caused by public health disasters, especially when there is massive damage to the medical infrastructure. Government agencies and national organizations recommend that people with chronic illness prepare for disasters by stockpiling extra supplies of medications.

A wide range of chronic illnesses has long been documented among veterans of the US armed forces. Veterans with chronic illness could be at great risk of complications due to disaster-related medication disruptions; however, the prevalence of personal medication preparedness among chronically ill veterans is not currently known.

Data was used from the 2009 California Health Interview Survey on 28,167 respondents who reported taking daily medications. After adjusting for differences in age, health status, and other characteristics, calculations were made of the percentage of respondents who had a two-week supply of emergency medications and, among respondents without a supply, the percentage who said they could obtain one. Veteran men, veteran women, nonveteran men, and nonveteran women were compared.

Medication supplies among veteran men (81.9%) were higher than among nonveteran women (74.8%; P < .0001) and veteran women (81.1%; P = 0.014). Among respondents without medication supplies, 67.2% of nonveteran men said that they could obtain a two-week supply, compared with 60.1% of nonveteran women (P = .012).

Among adults in California with chronic illness, veteran men are more likely to have personal emergency medication supplies than are veteran and nonveteran women. Veteran men may be more likely to be prepared because of their training to work in combat zones and other emergency situations, which perhaps engenders in them a culture of preparedness or self-reliance. It is also possible that people who choose to enlist in the military are different from the general population in ways that make them more likely to be better prepared for emergencies.

Veterans in California have a relatively high level of emergency medication preparedness. Given the health complications that can result from disaster-related medication disruptions, this is a promising finding. Disasters are a national concern, however, and the personal preparedness of veterans in all parts of the nation should be assessed; these findings could serve as a useful reference point for such work in the future.

HeslinK, GinJ, AfableM, RicciK, DobalianA. Personal Medication Preparedness Among Veteran and Nonveteran Men and Women in the California Population. Prehosp Disaster Med. 2013; 28(4):1-8.

The newer cyanide antidote, hydroxocobalamin, due to its pigmentation, has been found to cause interferences in some laboratory assays. Co-oximetry may also be affected by hydroxocobalamin, leading to false elevations in hemoglobin concentration, methemoglobin, carboxyhemoglobin, and false decreases in oxyhemoglobin. The Masimo Radical-7 is a medical device that performs noninvasive oximetry and estimates hemoglobin (Hb) concentration and percent carboxyhemoglobin (COHb), methemoglobin (MetHb), and oxyhemoglobin saturation (O2Hb).

The study sought to determine the effect of hydroxocobalamin on noninvasive measurement of hemoglobin indices using the Masimo Radical-7 monitor.

Seven asymptomatic volunteers who were unexposed to cyanide had baseline heart rate (HR), blood pressure (BP), and oximeter measurements recorded followed by an infusion of five grams of hydroxocobalamin over 15 minutes. The above parameters were subsequently recorded at: 5, 10, 15, 30 and 60 minutes post infusion. Data were analyzed by calculating the area under the curve (AUC) for each variable and comparing the results to expected values by paired t tests. Expected AUC values were calculated by extrapolating baseline values across the entire time period.

The mean differences from baseline values with 95% confidence intervals and t tests of mean difference were: SBP: 11 mm Hg (95% CI, 0-22; P = .051); HR: -9 (95% CI, -15 to -3; P = .01); Hb: -0.1 (95% CI, -0.7 to 0.4; P = .57); O2Hb: 0 g/dL (95% CI, -1 to 1; P = .41); COHb: -1 (95% CI, -3 to 1; P = .25); MetHb: -0.2 (95% CI, -0.3 to 0; P = .03).

After infusion of hydroxocobalamin there was a significant elevation of systolic blood pressure and decrease in heart rate. There were no significant differences in Hb, O2Hb, and COHb. Although percent methemoglobin concentrations were statistically lower, the authors feel this difference is of trivial clinical significance.

The administration of hydroxocobalamin does not significantly impact noninvasive oximetry.

CashinB, MatlockA, KangC, ReynoldsP, WillsB. Effect of Hydroxocobalamin on Surface Oximetry in Nonexposed Humans. Prehosp Disaster Med. 2013;28(4):1-3.

Ambulance drivers often travel under stressful conditions at high speed while using vehicles with poor high-speed maneuverability. The occupant safety of ambulance vehicles has not yet been addressed by the automotive safety paradigm; particularly for the rear patient compartment. This study had two objectives: (1) to assess by survey the French Emergency Medical Services (EMS) to determine the layout of the vehicle most often used and the EMS personnel's behavior during transport; and (2) to conduct a crash test to analyze the injuries which may affect EMS personnel and patients in the rear patient compartment.

Firstly, a survey was distributed to the 50 largest metropolitan French EMS programs. Secondly, a crash test was performed with a Mobile Intensive Care Unit (MICU) in conditions closest to reality.

Forty-nine of the 50 biggest metropolitan French EMS programs responded to the survey. This represents 108 French MICUs. During the last three years, 12 of 49 EMS programs (24%) identified at least one accident with an MICU, and six of these 12 (50%) suffered at least one death in those accidents. A crash test using a typical French EMS MICU showed that after impact of a collision, the ambulance was moved more than five meters with major consequences for all passengers. A study-approved human cadaver placed in the position of a potential patient was partially thrown from the stretcher with a head impact. The accelerometric reaction of the anthropomorphic manikin head was measured at 48G.

The crash test demonstrated a lack of safety for EMS personnel and patients in the rear compartment. It would be preferable if each piece of medical equipment were provided with a quick release system resistant to three-dimensional 10G forces. The kinetic changes undergone by the “patient” substitute on the stretcher would probably have an effect of causing injury pathology. This study highlights the need for more research and development in this area.

FournierM, ChenaitiaH, MassonC, MicheletP, BehrM, AuffrayJP. Crew and Patient Safety in Ambulances: Results of a Personnel Survey and Experimental Side Impact Crash Test. Prehosp Disaster Med. 2013;28(4):1-6.

Emergency medical services personnel treat 22 million patients a year, yet little is known of their risk of injury and fatality.

Work-related injury and fatality rates among US paramedics and emergency medical technicians (EMTs) are higher than the national average for all occupations.

Data collected by the Department of Labor (DOL) Bureau of Labor Statistics were reviewed to identify injuries and fatalities among EMTs and paramedics from 2003 through 2007. The characteristics of fatal injuries are described and the rates and relative risks of the non-fatal injuries were calculated and compared to the national average.

Of the 21,749 reported cases, 21,690 involved non-fatal injuries or illnesses that resulted in lost work days among EMTs and paramedics within the private sector. Of the injuries, 3,710 (17%) resulted in ≥31 days of lost work time. A total of 14,470 cases (67%) involved sprains or strains; back injury was reported in 9,290 of the cases (43%); and the patient was listed as the source of injury in 7,960 (37%) cases. The most common events were overexertion (12,146, 56%), falls (2,169, 10%), and transportation-related (1,940, 9%). A total of 530 assaults were reported during the study period. Forty-five percent of the cases occurred among females (females accounted for 27% of employment in this occupation during 2007). In 2007, EMTs and paramedics suffered 349.9 injuries with days away from work per 10,000 full-time workers, compared to an average of 122.2 for all private industry occupations (Relative risk = 2.9; 95% CI: 2.7–3.0). During the study period, 59 fatalities occurred among EMTs and paramedics in both the private industry and in the public sector. Of those fatalities, 51 (86%) were transportation-related and five (8%) were assaults; 33 (56%) were classified as “multiple traumatic injuries.”

Data from the DOL show that EMTs and paramedics have a rate of injury that is about three times the national average for all occupations. The vast majority of fatalities are secondary to transportation related-incidents. Assaults are also identified as a significant cause of fatality. The findings also indicate that females in this occupational group may have a disproportionately larger number of injuries. Support is recommended for further research related to causal factors and for the development, evaluation and promulgation of evidence-based interventions to mitigate this problem.

MaguireBJ, SmithS. Injuries and Fatalities among Emergency Medical Technicians and Paramedics in the United States. Prehosp Disaster Med. 2013;28(4):1-7.

Portable suction units used by EMS personnel are utilized infrequently and often are powered by batteries. Lack of use and inspection often results in failure of the device when it is needed. The purpose of this study was to examine the incidence of portable suction unit failure in a rural EMS system and to identify the reasons for failures.

A convenience sample was obtained through both random inspections by the staff of a regional EMS council and data from twice monthly checks reported by respective EMS agencies following a standard protocol for each unit. A standard protocol was used, including checking the vacuum level on each suction unit and inspecting the tubing, canister, and battery. Each inspector assessed whether the unit was capable of achieving 300 mmHg of suction within four seconds. Also, the unit was inspected for any signs of misalignment or dry rot of the gasket, kinking of suction hose, damage to the suction canister, weak/dead battery, or defective pump. Findings were recorded.

Over a two-year period, 9,631 suction unit inspections were completed. There were 233 failures (2.4%) noted. The majority (126, 54.1%) were due to battery failure. Seventy-three units failed due to other reasons (not recorded, switch failure, battery not seated). Ten inspections failed due to incorrect assembly. Nineteen inspections failed due to defects with the suction canister. Five inspections failed due to kinked/disconnected suction tubing.

Only a relatively small percentage of inspections of suction units revealed failures (4.6% Advanced Life Support, 8.6% Basic Life Support) using the above-stated criteria. However, given the importance of airway management and potential complications associated with airway compromise, including aspiration pneumonia, hypoxia, and hemodynamic instability, this is of concern relative to the morbidity and mortality that could be related to airway failure. Due to the relative infrequency of use and the nature of portable suction units, the potential for lack of maintenance and deficiencies in routine inspection may impact the functional status of these devices in EMS agencies. Clearly, improved documentation of battery installation date, charging in accordance with manufacturer recommendations, and thorough inspection of the portable suction unit in its entirety will ensure readiness of these devices. Additionally, more rigorous documentation and analysis of inspections should be a focus of EMS agencies.

RisaviBL, SabotchickKJ, HeileCJ. Portable Suction Unit Failure in a Rural EMS System. Prehosp Disaster Med. 2013;28(4):1-3.