National Emergency Medical Services Research Articles

Childrens' and Parents' Willingness to Join a Smartphone-Based Emergency Response Community for Anaphylaxis: Survey.

BackgroundMedical emergencies such as anaphylaxis may require immediate use of emergency medication. Because of the low adherence of chronic patients (ie, carrying anti-anaphylactic medication) and the potentially long response time of emergency medical services (EMSs), alternative approaches to provide immediate first aid are required. A smartphone-based emergency response community (ERC) was established for patients with allergies to enable members to share their automatic adrenaline injector (AAI) with other patients who do not have their AAI at the onset of anaphylactic symptoms. The community is operated by a national EMS. In the first stage of the trial, children with food allergies and their parents were invited to join.ObjectiveThis study aimed to identify the factors that influence the willingness to join an ERC for a group of patients at risk of anaphylaxis.MethodsThe willingness to join an ERC was studied from different perspectives: the willingness of children with severe allergies to join an ERC, the willingness of their parents to join an ERC, the willingness of parents to enroll their children in an ERC, and the opinions of parents and children about the minimum age to join an ERC. Several types of independent variables were used: demographics, medical data, adherence, parenting style, and children's autonomy. A convenience sample of children and their parents who attended an annual meeting of a nonprofit organization for patients with food allergies was used. ResultsA total of 96 questionnaires, 73 by parents and 23 by children, were collected. Response rates were approximately 95%. Adherence was high: 22 out of 23 children (96%) and 22 out of 52 parents (42%) had their AAI when asked. Willingness to join the community was high among parents (95%) and among children (78%). Willingness of parents to enroll their children was 49% (36/73). The minimum age to join an ERC was 12.27 years (SD 3.02) in the parents’ opinion and 13.15 years (SD 3.44) in the children’s opinion.ConclusionsParents’ willingness to join an ERC was negatively correlated with parents’ age, child’s age, and parents’ adherence. This can be explained by the free-rider effect: parents who carried an AAI for their young child, but had low adherence, wanted to join the ERC to get an additional layer of emergency response. Children’s willingness to join the community was positively correlated with age and negatively correlated with the child’s emotional autonomy. Parents’ willingness to enroll their children in an ERC was positively correlated with child’s age and negatively correlated with parents’ adherence: again, this can be explained by the aforementioned free-rider effect. Parents’ and children’s opinions about the minimum age to join an ERC were negatively correlated with protective parenting style and positively correlated with monitoring parenting style.

Females and Minority Racial/Ethnic Groups Remain Underrepresented in Emergency Medical Services: A Ten-Year Assessment, 2008–2017

Background: Workforce diversity can reduce communication barriers and inequalities in healthcare delivery, especially in settings where time pressure and incomplete information may exacerbate the effects of implicit biases. Emergency medical services (EMS) professionals represent a critical entry point into the healthcare system for diverse populations, yet little is known regarding changes in the demographic composition of this workforce. Our primary objective was to describe the gender and racial/ethnic composition of emergency medical technicians (EMTs) and paramedics who earned initial National EMS Certification from 2008 to 2017. Secondarily, we compared demographic characteristics of the 2017 EMT and paramedic cohorts to the U.S. population. Methods: As a proxy for recent graduates likely to enter the workforce, we conducted a serial cross-sectional analysis of all EMTs and paramedics earning initial National EMS Certification from January 1, 2008 to December 31, 2017. Cuzick’s non-parametric test of trend was used to assess for changes in the gender and racial/ethnic composition of the EMS cohorts over time. For 2017, we calculated differences the gender and racial/ethnic composition of the EMT and paramedic cohorts to the U.S population, stratifying by Census region. Results: The study population included 588,337 EMTs and 105,356 paramedics. The proportion of females earning initial EMT certification rose from 28% in 2008 to 35% in 2017. Throughout the study period, less than one-fourth of newly certified paramedics were female (range: 20–23%). The proportion of EMS professionals identifying as black remained near 5% among EMTs and 3% among paramedics. The proportion of newly-certified Hispanic EMS professionals rose from 10% to 13% among EMTs and from 6% to 10% among paramedics. Compared to the U.S. population, females and racial/ethnic minorities were underrepresented among EMTs and paramedics earning initial certification and these representation differences varied across geographic regions. Conclusions: The underrepresentation of females and minority racial/ethnic groups observed during this 10-year investigation of EMTs and paramedics earning initial certification suggests that EMS workforce diversity is unlikely to undergo substantial change in the near future. The representation gaps were larger and more stable among paramedics compared to EMTs and suggest an area where concerted efforts are needed to encourage students of diverse backgrounds to pursue EMS.

"Make the Call, Don't Miss a Beat" Campaign: Effect on Emergency Medical Services Use in Women with Heart Attack Signs.

Our objective was to evaluate the relationship between the "Make The Call, Don't Miss a Beat" national mass media campaign and emergency medical services (EMS) use among women with possible heart attack symptoms. We linked campaign TV public service advertisement data with national EMS activation data for 2010 to 2014. We identified EMS activations (i.e., responses) for possible heart attack symptoms and for unintentional injuries for both women and men. We estimated the impact of the campaign on the fraction of the 1.7 to 15.9 million activations of women with possible heart attack symptoms compared with 1.9 million female activations for unintentional injuries within each EMS agency and month using quasi-binomial logistic regression controlling for time and state. Of the 3,175 US. counties, 90% were exposed to the campaign. However, less than 2% of U.S. counties reached moderate TV exposure (≥300 gross rating points) during the entire campaign period. We did not observe an increase in the fraction of female activations for possible heart attack during periods or in counties with higher campaign exposure. This mass media campaign that relied heavily on TV public service advertisements was not associated with increased EMS use by women with possible heart attack symptoms, even among counties that were more highly exposed to the campaign advertisements.

Approach to Onboarding Emergency Medical Services (EMS) Data Into a Syndromic Surveillance System

ObjectiveTo describe the strategy and process used by the Florida Department of Health (FDOH) Bureau of Epidemiology to onboard emergency medical services (EMS) data into FDOH’s syndromic surveillance system, the Electronic Surveillance System for the Early Notification of Community-based Epidemics (ESSENCE-FL).IntroductionSyndromic surveillance has become an integral component of public health surveillance efforts within the state of Florida. The near real-time nature of these data are critical during events such as the Zika virus outbreak in Florida in 2016 and in the aftermath of Hurricane Irma in 2017. Additionally, syndromic surveillance data are utilized to support daily reportable disease detection and other surveillance efforts. Although syndromic systems typically utilize emergency department (ED) visit data, ESSENCE-FL also includes data from non-traditional sources: urgent care center visit data, mortality data, reportable disease data, and Florida Poison Information Center Network (FPICN) data. Inclusion of these data sources within the same system enables the broad accessibility of the data to more than 400 users statewide, and allows for rapid visualization of multiple data sources in order to address public health needs. Currently, the ESSENCE-FL team is actively working to incorporate EMS data into ESSENCE-FL to further increase public health surveillance capacity and data visualization.MethodsThe ESSENCE-FL team worked collaboratively with various public health program stakeholders to bring EMS data, aggregated by the FDOH Bureau of Emergency Medical Oversight Emergency Medical Services Tracking and Reporting System (EMSTARS) team, into ESSENCE-FL. The ESSENCE-FL team met with the EMSTARS team to discuss use cases, demonstrate both systems, and to obtain project buy-in and support. Initial project meetings included review of ESSENCE-FL system support, user types (roles and access), as well as data security and compliance. An overall project timeline was established, and deliverables were added into system support contracts. Multiple stakeholders, across disciplines representing each key use case, reviewed the Florida version of the National Emergency Medical Services Information System (NEMSIS) version 3.4 data dictionary to identify program-specific data element needs. An element scoring spreadsheet was returned to the ESSENCE-FL team. These scores were aggregated and discordant scores were reviewed by the ESSENCE-FL team. A one-month extract of EMS data was reviewed to assess variable completeness and relevance. Monthly team meetings facilitated the final decisions on the data elements by leveraging lessons learned through onboarding other data sources, findings from the analysis of the one-month extract, stakeholder comments, and advice from other states known to be leveraging EMS data for public health surveillance.ResultsThrough a collaborative and broad approach with partners, the ESSENCE-FL team attained stakeholder buy-in and identified 81 data elements to be included in the EMS feed to ESSENCE-FL. The final list of data elements was determined to best support health surveillance of this population prior to presenting to the ED. The inclusion of the EMS data in ESSENCE-FL will increase the epidemiologic characterization and analysis of the opioid epidemic in Florida. Additional key use cases identified during this project included enhanced injury surveillance, enhanced occupational health surveillance, and characterization of potential differences between EMS and ED visits.ConclusionsThis comprehensive approach can be used by other jurisdictions considering adding EMS data to their syndromic surveillance systems. When considering onboarding a new data source into a surveillance system, it is important to work closely with stakeholders from disciplines representing each of the key use cases to broaden buy-in and support for the project. Through employing this comprehensive approach, syndromic surveillance systems can be better developed to include data that are widely utilizable to many different stakeholders in the public health community.

Progress in the Development of the Standardized Public Health Emergency Preparedness Terminology

ObjectiveThe purpose of this project is to demonstrate the progress in development of a standardized public health (PH) emergency preparedness and response data ontology (terminology) through collaboration between the Centers for Disease Control and Prevention (CDC), Division of Emergency Operations (DEO), and the Logical Observation Identifiers Names and Codes (LOINC) system.IntroductionThe U.S. Department of Homeland Security National Incident Management System (NIMS) establishes a common framework and common terminology that allows diverse incident management and support organizations to work together across a wide variety of functions and hazard scenarios1. Using common terminology helps avoid confusion and enhances interoperability, particularly in fast-moving public health (PH) emergency responses. In addition, common terminology allows diverse incident management and support organizations to work together across a wide variety of functions and scenarios1. LOINC is one of a suite of designated standards for the electronic exchange of public health and clinical information. Implementation of LOINC facilitates improvement of semantic interoperability, including unified terminology2. More than 68,100 registered users from 172 countries use LOINC to move interoperable data seamlessly between systems3. The CDC Division of Emergency Operations (DEO) leads development of standardized PH emergency preparedness and response terminology to improve effective and interoperable communications between national and international partners. Realizing the scale of LOINC support and implementation across the global public health arena, CDC DEO collaborates with LOINC to further enhance and harmonize the current PH emergency response terminology and to attain critical PH emergency management and preparedness and response requirements.MethodsDEO analyzed 87,863 LOINC terms that were included in LOINC version 2.64, released on 06/15/20183. Access to this LOINC version was obtained through the Regenstrief LOINC Mapping Assistant (RELMA). RELMA is a Windows-based LOINC utility developed by the Regenstrief Institute (Indiapolis, USA) for searching the LOINC database and mapping local codes to LOINC codes4. The relevance of LOINC terminology to PH emergency preparedness and response was assessed through evaluating existing LOINC terminology against terminology specified by the World Health Organization PH Emergency Operation Centers (EOC). The following functions were evaluated: 1) Managing and Commanding; 2) Operating; 3) Planning/Intelligence; 4) Logistics and 5) Finance/Administration5. LOINC terminology was also evaluated against the CDC PH EOC Minimum Data Set (MDS)6 that contains 315 standardized terms. Analysis of fully specified LOINC terms was conducted through assessment of such LOINC term parts (attributes) as the code, name (component), system, method and class. Recommendations of gaps and enhancements were coordinated with LOINC management for inclusion of the new terminology in the release of version 2.65 .ResultsA new LOINC method, “CDC.EOC”, is under development. Currently, the “emergency management incident” terminology presented by LOINC is limited by such characteristics as event type, event location and event name and requires amplification regarding to PH operations (i.e., communication, logistics etc.).As a result of this investigation, emergency management terms are now being classified according to the type of incident or event (i.e., hurricane, outbreak, etc.) under LOINC code 80394-0. Similarly laboratory and clinical terms are being classified under a provisional LOINC code (89724-9). Two panels were created: 1) The emergency medical systems from the National Emergency Medical Services Information System (NEMSIS) was added under the NEMSIS.Panel (n= 177 terms) and 2) the Data Elements for Emergency Departments Systems (DEEDS) panel (n = 152 terms) was added with two subpanels: Attach.ED and Panel.ED.Assessing existing LOINC taxonomy and codification, DEO is working with the LOINC management team on evaluating additional options for reconciliation the PH emergency preparedness and response common information exchange reference model and LOINC standard. This process aims to further improve semantic interoperability of PH emergency preparedness and response information.ConclusionsThe LOINC terminology standardization is essential for improving PH preparedness and response data exchange and semantic interoperability. Collaboration with the Regenstrief Institute (LOINC) allows CDC to meet the terminology needs of PH emergency management and defines new opportunities for reconciliation data exchange between NIMS partners. This collaborative effort incorporates critically needed PH emergency and preparedness terminology and hierarchical structure in the LOINC standard.

Watching to Save Lives

Introduction:As Israel's National Emergency Medical Services (EMS) provider, Magen David Adom (MDA) is constantly looking for ways to improve the response to mass casualty incidents (MCIs). Previous research has shown that in an MCI situation, the demand for resources is disproportionate to the available resources, thus creating a dilemma of how to triage and treat the patients, as well as how to best prioritize and treat the critical patients.Aim:Smartwatches have become an integral part of society. MDA constantly looks for ways to integrate new technologies into their emergency response protocols. Smartwatches were used in this experiment to determine if in an MCI, relaying live information to the dispatch center would improve the time it takes for emergency crews to effectively treat and transport critical patients.Methods:A drill and scenario were designed to simulate an MCI in which there were 3 severe, 2 moderate, and 5 lightly wounded patients. There were then different colored smartwatches placed on each victim. The watches transmitted real-time blood pressure, pulse, and oxygen saturation readings to the dispatch center. The live information was transferred directly to responding teams. A second drill was conducted using the same scenario, same number of patients, but without watches to examine the differences in response times.Results:MDA found that the use of smartwatches directly improved the times (by 3.27 minutes) in which emergency teams were able to reach the most severely wounded patients and evacuate them to the hospital in a timely manner.Discussion:Using smartwatches to transmit live information to the dispatch center allowed for effective treatment and transport of patients in an MCI. Use of such information allows the dispatch center to direct teams to provide accurate treatment to the patients according to their needs.

Pediatric firearm incidents: It is time to decrease on-scene mortality.

Previous epidemiological studies on pediatric firearm mortality have focused on overall mortality rather than on-scene mortality. Despite advances in trauma care, the number of potentially preventable deaths remains high. This study used the National Emergency Medical Services Information Systems database to characterize patterns of on-scene mortality in order to identify patients who may benefit from changes to prehospital care practices. National Emergency Medical Services Information Systems database was searched for all pediatric firearm incidents from 2010 to 2015. Data on demographics, anatomic location of injury, intent and location of incident, and on-scene mortality were analyzed using Student's t test for continuous variables and χ test for categorical variables. A linear regression model was used to calculate independent predictors of mortality. Sixteen thousand eight hundred eight patients were identified, with a mortality rate of 6.1%. Most mortalities suffered cardiac arrest on-scene; 72.6% of these were prior to Emergency Medical Services (EMS) arrival, which carried a significantly higher mortality rate than arrest after EMS arrival. No difference was seen in anatomic location of injury in those who arrested before and after EMS arrival. Compressible injuries were most common with the lowest mortality. Noncompressible injuries together accounted for 25.8% of injuries and 23.5% of mortalities. To our knowledge, this is the largest study of on-scene mortality in pediatric firearm injury. Cardiac arrest prior to EMS arrival was a considerable source of on-scene mortality; significantly more of these patients died than those who arrested after EMS arrival. The mortality of compressible injuries was very low, implying that use of compression and tourniquets have been effective in stopping life-threatening extremity bleeding. Noncompressible injury mortality could be decreased with education of bystanders and more aggressive on-scene intervention. Through the evaluation of on-scene mortality specifically, this study offers insight into potential areas of focus to improve prehospital care of pediatric gunshot victims. Therapeutic/Care management, level IV.

Abstract P407: Stroke Dispatch, Provider Impression and Critical Pre-Hospital Time Intervals: NEMSIS, 2016

Introduction: Stroke management guidelines have established several recommendations to ensure a proper response by Emergency Medical Services (EMS), including EMS arrival at the scene in ≤8 minutes (response time, RT), and an on-scene time (OST) of ≤15 minutes. Understanding factors associated with achieving these time intervals may help to focus EMS interventions. Hypothesis: We assessed the hypothesis that RT and OST for suspected patients with a dispatch of stroke are more likely to fall within guideline recommendations than those with a dispatch for non-stroke related events. Methods: Using the 2016 National Emergency Medical Services Information System (NEMSIS), a database of patient care reports resulting from 911 calls, we extracted cases with a primary or secondary provider impression of stroke, their EMS arrival to the scene (RT) ≤8 minutes and OST of ≤15 minutes. The sample included persons aged ≥18 years with non-missing sociodemographic data on sex, race/ethnicity, rurality and dispatch calls of events. The percentages of 911 cases, stroke events, and time intervals of interest were calculated. Chi-square tests was used to assess associations. Results: There were 153,730 events (1.4% of all 911 transports) with a primary or secondary provider impression of stroke. Within these events, 69.5% had a RT ≤8 minutes, and 49.2% had an OST ≤15 minutes: differences varied within all sociodemographic groups. A significant difference was found between those dispatched as stroke and those dispatched as other, with a greater proportion of dispatched strokes having both a RT ≤8 minutes (70.2% vs 68.8%) and OST ≤15 minutes (53.0% vs 45.6%). Conclusion: In conclusion, we found a significantly higher proportion of patients dispatched as stroke falling within the critical time intervals of response time and on-scene time. Future EMS stroke education should place more focus on dispatcher knowledge of stroke signs and symptoms, as an integral pre-hospital partner in improving the stroke system of care.

Abstract P130: Disparities in Out-of-hospital Cardiac Arrest Rates Among Adults, Aged ≥18 Years Old, With 9-1-1 Emergency Medical Service Activation’s in the United States, 2016

Introduction: Out-of-hospital cardiac arrest (OHCA) is a significant public health issue. Hypothesis: This study aims to assess whether patients’ age, sex, race/ethnicity, and urban/non-urban status are associated with the rate of OHCA events among adults who accessed 9-1-1 emergency medical services (EMS) in 2016. Methods: We conducted a cross-sectional analysis using the 2016 National Emergency Medical Services Information System (NEMSIS), a national EMS database. OHCA events among adults aged ≥18 years were extracted by sex, age group, race/ethnicity, urban and non-Urban categories. Those with unknown race/ethnicity (45.8%) or of other race (1.3%) were excluded. Rates of OHCA events were calculated and Chi-square tests were used to assess associations. Results: We identified 205,461 OHCA events with EMS activations among non-Hispanic (NH) whites (68.1%), NH blacks (23.2%), and Hispanics (8.7%) in the 2016 NEMSIS dataset. Of the OHCA events, 59.5% were among males, 81.1% among urban residents, and 15.4% among non-urban residents. The overall OHCA rate was 19.6 per 1,000 EMS activations. OHCA rates per 1,000 EMS activations increased with age for adults until age 74, ranging from 11.2 (18-34 years) to 25.1 (65-74 years), then decreased with age for older adults ≥75 ranging from 22.3 (75-84 years) to 20.8 (≥85 years) ( p <.0001). OHCA rates were higher among males 25.3, Hispanics 20.9, and urban residents 21.7 than females 15.6, other race ethnicities (NH whites 19.8 and NH blacks 18.7), and non-urban residents 17.6 ( p <.0001) respectively. Conlusions: OHCA incidence rates among EMS activations increased with age until age 74. Adult males, Hispanics, and urban patients had statistically significant higher EMS activations for OHCA rates. Findings can be incorporated in community planning for improving EMS services.

Physician-manned prehospital emergency care in tertiary emergency centers in Japan.

AimUse of a physician‐manned prehospital emergency medical service (EMS) has recently become widespread in Japan. Understanding the epidemiology of critically ill patients is essential for planning national and regional physician‐manned prehospital EMS systems. However, current knowledge on patients receiving physician‐manned prehospital EMS is sparse. The present study aimed to determine the clinical features of critically ill patients with and without physician‐manned prehospital EMS, using a national inpatient database in Japan.MethodsUsing the Japanese Diagnosis Procedure Combination inpatient database, we identified all hospitalized patients transported to tertiary emergency centers by physician‐manned EMS or EMS without a physician from April 2014 to March 2015. We collected data on patient characteristics, in‐hospital mortality, admission diagnoses, advanced life support interventions, and incidence of critical illnesses.ResultsWe identified 497,911 hospitalized patients transported to tertiary emergency centers by EMS. Of these, 15,507 (3%) patients were hospitalized by physician‐manned EMS. The majority of admission diagnoses in the physician‐manned EMS group were classified “diseases of the circulatory system” (45%) and “injury, poisoning and certain other consequences of external causes” (34%). The rates of in‐hospital mortality, advanced life support interventions, and critical illnesses in the physician‐manned EMS group were 22%, 51%, and 53%, respectively. The median incidences of hospitalized patients by physician‐manned EMS, advanced life support interventions, and critical illnesses were 12, 137, and 205 per 100,000 persons per year in facilities with physician‐manned EMS, respectively.ConclusionOur study indicates that physician‐manned EMS is dispatched to a relatively small proportion of critically ill patients in Japan.

Association Between Emergency Medical Service Response Time and Motor Vehicle Crash Mortality in the United States

Motor vehicle crashes (MVCs) are a leading public health concern. Emergency medical service (EMS) response time is a modifiable, system-level factor with the potential to influence trauma patient survival. The relationship between EMS response time and MVC mortality is unknown. To measure the association between EMS response times and MVC mortality at the population level across US counties. This population-based study included MVC-related deaths in 2268 US counties, representing an estimated population of 239 464 121 people, from January 1, 2013, through December 31, 2015. Data were analyzed from October 1, 2017, through April 30, 2018. The median EMS response time to MVCs within each county (county response time), derived from data collected by the National Emergency Medical Service Information System. The county rate of MVC-related death, calculated using crash fatality data recorded in the Fatality Analysis Reporting System of the National Highway Traffic Safety Administration. During the study period, 2 214 480 ambulance responses to MVCs were identified (median, 229 responses per county [interquartile range (IQR), 73-697 responses per county]) in 2268 US counties. The median county response time was 9 minutes (IQR, 7-11) minutes. Longer response times were significantly associated with higher rates of MVC mortality (≥12 vs <7 minutes; mortality rate ratio, 1.46; 95% CI, 1.32-1.61) after adjusting for measures of rurality, on-scene and transport times, access to trauma resources, and traffic safety laws. This finding was consistent in both rural/wilderness and urban/suburban settings, where a significant proportion of MVC fatalities (population attributable fraction: rural/wilderness, 9.9%; urban/suburban, 14.1%) were associated with prolonged response times (defined by the median value, ≥10 minutes and ≥7 minutes, respectively). Among 2268 US counties, longer EMS response times were associated with higher rates of MVC mortality. A significant proportion of MVC-related deaths were associated with prolonged response times in both rural/wilderness and urban/suburban settings. These findings suggest that trauma system-level efforts to address regional disparities in MVC mortality should evaluate EMS response times as a potential contributor.

Is Use of Warning Lights and Sirens Associated With Increased Risk of Ambulance Crashes? A Contemporary Analysis Using National EMS Information System (NEMSIS) Data

We compare reported crash rates for US ambulances responding to or transporting patients from a 911 emergency scene with or without lights and sirens. Our null hypothesis is that there will be no difference in the rate of ambulance crashes whether lights and sirens are used. For this retrospective cohort study, we used the 2016 National EMS Information System data set to identify 911 scene responses and subsequent patient transports by transport-capable emergency medical services (EMS) units. We used the system's "response mode to scene" and "transport mode from scene" fields to determine lights and sirens use. We used the "type of response delay" and "type of transport delay" fields to identify responses and transports that were delayed because of a crash involving the ambulance. We calculated the rate of crash-related delays per 100,000 responses or transports and used multivariable logistic regression with clustered (by agency) standard errors to calculate adjusted odds ratios (AORs) (with 95% confidence intervals [CIs]) for the association between crash-related delays and lights and sirens use for responses and transports separately. Among 19 million included 911 scene responses, the response phase crash rate was 4.6 of 100,000 without lights and sirens and 5.4 of 100,000 with lights and sirens (AOR 1.5; 95% CI 1.2 to 1.9). For the transport phase, the crash rate was 7.0 of 100,000 without lights and sirens and 17.1 of 100,000 with lights and sirens (AOR 2.9; 95% CI 2.2 to 3.9). Excluding responses and transports with only partial lights and sirens use did not meaningfully alter the results (response AOR 1.5, 95% CI 1.2 to 1.9; transport AOR 2.8, 95% CI 2.1 to 3.8). Ambulance use of lights and sirens is associated with increased risk of ambulance crashes. The association is greatest during the transport phase. EMS providers should weigh these risks against any potential time savings associated with lights and sirens use.

Impact of prehospital mechanical ventilation: A retrospective matched cohort study of 911 calls in the United States.

Prehospital use of ventilators by emergency medical services (EMS) during 911 calls is increasing. This study described the impact of prehospital mechanical ventilation on prehospital time intervals and on mortality.This retrospective matched-cohort study used 4 consecutive public releases of the US National Emergency Medical Services Information System dataset (2011–2014). EMS activations with recorded ventilator use were randomly matched with activations without ventilator use (1 to 1) on age (range ± 2 years), gender, provider's primary impression, urbanicity, and level of service.A total of 5740 EMS activations were included (2870 patients per group). Patients in the ventilator group had a mean age of 69.1 (±17.3) years with 49.4% males, similar to the non-ventilator group. Activations were mostly in urban settings (83.8%) with an advanced life support level of care (94.5%). Respiratory distress (77.8%) and cardiac arrest (6.8%) were the most common provider's primary impressions. Continuous positive airway pressure was the most common mode of ventilation used (79.2%).Mortality was higher at hospital discharge (29.0% vs 21.1%, P = .01) but not at emergency department (ED) discharge (8.4% vs 7.4%, P = .19) with prehospital ventilator use. Both total on-scene time and total prehospital time intervals increased with reported ventilator use (4.10 minutes (95% confidence interval [CI]: 2.71–5.49) and 3.59 minutes (95% CI: 3.04–4.14), respectively).Ventilator use by EMS agencies in 911 calls in the US is associated with higher prehospital time intervals without observed impact on survival to ED discharge. More EMS outcome research is needed to provide evidence-based prehospital care guidelines and targeted resource utilization.

Effect of typhoons on the Korean national emergency medical service system.

ObjectiveWhile the effect of typhoons on emergency medicine has been evaluated, data are scarce on their effects on the emergency medical service (EMS). This study evaluated the effect of typhoons on EMS patients and performance.MethodsThe study period was January 2010 to December 2012. Meteorological data regarding typhoons were provided by the Korean Meteorological Administration. EMS data were retrieved from the EMS database of the national emergency management agency. The database includes ambulance run sheets, which contain clinical and operational data. In this case-crossover study, the cases and controls were EMS calls on the day of typhoon warnings and calls one week prior to the typhoon warnings, respectively.ResultsDuring the study period, 11 typhoons affected Korea. A total of 14,521 cases were selected for analysis. Overall, there were no obvious differences between the case and control groups. However, there were statistically significant differences in age, place, and time requests. There were fewer patients between 0 and 15 years of age (P=0.01) and more unconscious patients (P=0.01) in the case group. The EMS operational performance, as measured by the times elapsed between call to start, call to field, and call to hospital did not differ significantly. There was also no significant difference in the time from hospital arrival between the cases (28.67, standard deviation 16.37) and controls (28.97, standard deviation 28.91) (P=0.39).ConclusionTyphoons did not significantly affect the EMS system in this study. Further study is necessary to understand the reasons for this finding.

Emergency Medical Services Experience With Barb Removal After Taser Use By Law Enforcement: A Descriptive National Study.

Conducted electrical weapons (CEWs), including Thomas A. Swift Electric Rifles (TASERs), are increasingly used by law enforcement officers (LEOs) in the US and world-wide. Little is known about the experience of Emergency Medical Service (EMS) providers with these incidents. This study describes EMS encounters with documented TASER use and barb removal, characteristics of resulting injuries, and treatment provided. This retrospective study used five combined, consecutive National Emergency Medical Services Information System (NEMSIS; Salt Lake City, Utah USA) public-release datasets (2011-2015). All EMS activations with documented TASER barb removal were included. Descriptive analyses were carried out. The study included 648 EMS activations with documented TASER barb removal, yielding a prevalence rate of 4.55 per 1,000,000 EMS activations. Patients had a mean age of 35.9 years (SD=18.2). The majority were males (80.2%) and mainly white (71.3%). Included EMS activations were mostly in urban or suburban areas (78.3%). Over one-half received Advanced Life Support (ALS)-level of service (58.2%). The most common chief complaint reported by dispatch were burns (29.9%), followed by traumatic injury (16.1%). Patients had pain (45.6%) or wound (17.2%) as a primary symptom, with most having possible injury (77.8%). Reported causes of injury were mainly fire and flames (29.8%) or excessive heat (16.7%). The provider's primary impressions were traumatic injury (66.3%) and behavioral/psychiatric disorder (16.8%). Only one cardiac arrest (0.2%) was reported. Over one-half of activations resulted in patient transports (56.3%), mainly to a hospital (91.2%). These encounters required routine EMS care (procedures and medications). An increase in the prevalence of EMS activations with documented TASER barb removal over the study period was not significant (P=.27). At present, EMS activations with documented TASER barb removal are rare. Routine care by EMS is expected, and life-threatening emergencies are not common. All EMS providers should be familiar with local policies and procedures related to TASER use and barb removal.El SayedM, El TawilC, TamimH, MailhacA, MannNC. Emergency Medical Services experience with barb removal after TASER use by law enforcement: a descriptive national study. Prehosp Disaster Med. 2019;34(1):38-45.

Motorcycle door crashes: An evaluation of crash characteristics in Taipei City, Taiwan.

ObjectivesCrashes due to motorcyclists colliding with an open car door can cause devastating injuries. In Taiwan, such crashes typically occur when the motorcyclist is travelling alongside a row of parallel-parked cars, and a driver suddenly opens the door in front of or next to the motorcycle without determining whether it is safe to do so. Injuries resulting from motorcycle door crashes tend to be severe. This study examined the factors that contribute to motorcycle door crashes.MethodsBy using linked data from the National Traffic Crash Dataset and Emergency Medical Service for Taipei City for the years 2010–2015, this study estimated a mixed multinomial logit model to predict the likelihood of three types of door crashes: driver-door crashes, left passenger-door crashes, and right passenger-door crashes.ResultsData on 8237 motorcycle door crashes were extracted from the two datasets and matched. The results from the mixed multinomial logit model revealed that illegal parking, older car occupants, teenage car occupants, intoxicated car occupants and motorcyclists, and motorcycle speeding contribute to driver-door crashes; and female passengers and taxis as the type of vehicle involved in crash are associated with left passenger-door crashes.ConclusionsOur study suggested that controlling motorcycle speed, and prosecuting illegal parking and drink driving/riding may constitute effective countermeasures. The “Dutch Reach” intervention measure, which is commonly adopted in Europe for bicycle door crashes, should be applied in Taiwan to curb motorcycle door crashes, especially for elderly car occupants.

Gender Differences in the Quality of EMS Care Nationwide for Chest Pain and Out-of-Hospital Cardiac Arrest.

We sought to determine whether gender disparities exist in the prehospital management of chest pain (CP) or out-of-hospital cardiac arrest (OHCA) among patients who accessed the emergency medical services (EMS) system. We obtained 2010-2013 data from the National Emergency Medical Services Information System and identified all EMS activations for CP or OHCA by adults 40years of age or older. We selected American Heart Association medications and procedures to manage cardiovascular events. We stratified women and men by age (<65years vs. ≥65years), race (White vs. Black), clinical condition (CP vs. OHCA), same EMS agency, and calendar year. We determined the gender-specific treatment proportions for each stratum and calculated the weighted percentage difference in treatment between women and men. Approximately 2.4 million CP and 284,000 OHCA activations were analyzed. Women with CP received a lower percentage of recommended treatments than men. For every 100 EMS activations by women with CP, 2.8 fewer received aspirin (95% CI, -4.8 to -0.8). The greatest gap in CP care was that women were significantly less likely to be transported using lights and sirens than men (-4.6%; 95% CI, -8.7% to -0.5%). More than 90% of OHCA activations were resuscitated; however, women were significantly less likely to be resuscitated compared with men (-1.3%; 95% CI, -2.4% to -0.2%). Small to modest disparities between otherwise similar women and men in the EMS treatment of CP and OHCA suggest the need for further evaluation and research with detailed contextual and outcome data.

A US National Study of the Association Between Income and Ambulance Response Time in Cardiac Arrest

Emergency medical services (EMS) provide critical prehospital care, and disparities in response times to time-sensitive conditions, such as cardiac arrest, may contribute to disparities in patient outcomes. To investigate whether ambulance 9-1-1 times were longer in low-income vs high-income areas and to compare response times with national benchmarks of 4, 8, or 15 minutes across income quartiles. A retrospective cross-sectional study was performed of the 2014 National Emergency Medical Services Information System data in June 2017 using negative binomial and logistic regressions to examine the association between zip code-level income and EMS response times. The study used ambulance 9-1-1 response data for out-of-hospital cardiac arrest from 46 of 50 state repositories (92.0%) in the United States. The sample included 63 600 cardiac arrest encounters of patients who did not die on scene and were transported to the hospital. Four time measures were examined, including response time, on-scene time, transport time, and total EMS time. The study compared response times with EMS response time benchmarks for responding to cardiac arrest calls within 4, 8, and 15 minutes. The study sample included 63 600 cardiac arrest encounters of patients (mean [SD] age, 60.6 [19.0] years; 57.9% male), with 37 550 patients (59.0%) from high-income areas and 8192 patients (12.9%) from low-income areas. High-income areas had greater proportions of white patients (70.1% vs 62.2%), male patients (58.8% vs 54.1%), privately insured patients (29.4% vs 15.9%), and uninsured patients (15.3% vs 7.9%), while low-income areas had a greater proportion of Medicaid-insured patients (38.3% vs 15.8%). The mean (SD) total EMS time was 37.5 (13.6) minutes in the highest zip code income quartile and 43.0 (18.8) minutes in the lowest. After controlling for urban zip code, weekday, and time of day in regression analyses, total EMS time remained 10% longer (95% CI, 9%-11%; P < .001), translating to 3.8 minutes longer in the poorest zip codes. The EMS response time to patients in high-income zip codes was more likely to meet 8-minute and 15-minute cutoffs compared with low-income zip codes. Patients with cardiac arrest from the poorest neighborhoods had longer EMS times compared with those from the wealthiest, and response times were less likely to meet national benchmarks in low-income areas, which may lead to increased disparities in prehospital delivery of care over time.

Using spatial regression methods to evaluate rural emergency medical services (EMS)

Emergency Medical Services (EMS) are acute services provided outside of the hospital. EMS are crucial in rural environments where hospitals are often far away and difficult to access. Establishing EMS performance measures is critical in improving a rural community's access to these services and eliminating systemic inequalities. However, an absence of data leads to challenges in developing objective and quantifiable service metrics. EMS data are regularly collected through the National EMS Information System (NEMSIS), yet the manner of data collection and quality of data vary across agencies. Moreover, the amount and complexity of information makes data analyses difficult, subsequently effecting EMS leaderships' ability to identify improvement needs.This study used NEMSIS data to exemplify approaches for establishing two data-driven performance measures. The measures used in this study – timely service and service coverage – are both dependent on the mobility and accessibility of the EMS transportation network. Two types of spatial models: the spatial econometric model and geographically weighted regression (GWR) model, were developed and then compared to the linear regression model to help identify response time factors. GWR performed best in terms of goodness-of-fit statistics and was chosen to help understand how factors (e.g., weather, transportation) impact the timely provision of EMS in rural areas. The GWR results provided additional insights through the particular spatial patterns of the coefficient estimates and their statistical significance to EMS practitioner for their references to reduce local response times.

Needs Assessment for Simulation Training for Prehospital Providers in Botswana

In June 2012, the Botswana Ministry of Health and Wellness (MOHW; Gaborone, Botswana) initiated a national Emergency Medical Services (EMS) system in response to significant morbidity and mortality associated with prehospital emergencies. The MOHW requested external expertise to train its developing workforce. Simulation-based training was planned to equip these health care providers with clinical knowledge, procedural skills, and communication techniques. The objective of this study was to assess the educational needs of the pioneer Botswana MOHW EMS providers based on retrospective EMS logbook review and EMS provider feedback to guide development of a novel educational curriculum. Data were abstracted from a representative sample of the Gaborone, Botswana MOHW EMS response log from 2013-2014 and were quantified into the five most common call types for both adults and children. Informal focus groups with health professionals and EMS staff, as well as surveys, were used to rank common response call types and self-perceived educational needs. Based on 1,506 calls, the most common adult response calls were for obstetric emergencies, altered mental status, gastrointestinal/abdominal pain, trauma, gynecological emergencies, and cardiovascular and respiratory distress-related emergencies. The most common pediatric response calls were for respiratory distress, gastrointestinal complaints/dehydration, trauma and musculoskeletal injuries, newborn delivery, seizures, and toxic ingestion/exposure. The EMS providers identified these same chief complaints as priorities for training using the qualitative approach. A locally relevant, simulation-based curriculum for the Botswana MOHW EMS system was developed and implemented based on these data. Trauma, respiratory distress, gastrointestinal complaints, and puerperal/perinatal emergencies were common conditions for all age groups. Other age-specific conditions were also identified as educational needs based on epidemiologic data and provider feedback. This needs assessment may be useful when designing locally relevant EMS curricula in other low-income and middle-income countries. GlombNW, KosokoAA, DoughtyCB, RusMC, ShahMI, CoxM, GalapiC, ParkesPS, KumarS, LabaB. Needs assessment for simulation training for prehospital providers in Botswana. Prehosp Disaster Med. 2018;33(6):621-626.