Emergency Medical Services Usage Research Articles

Characteristics of consecutive versus non-consecutive frequent emergency medical services transport to a single emergency department

Objective This study was to examine characteristics concerning frequent users of emergency medical services (EMS) transport by comparing patients who used EMS transport frequently for one year and those who used EMS transport for more than two years consecutively. Methods A retrospective review for frequent use of EMS transport was conducted. The patients from the fire stations that transported more than 70% of all EMS transport to the study hospital emergency department (ED) were included. The study subjects were divided into consecutive group (frequent EMS transport for ≥ two years consecutively) and non-consecutive group (frequent EMS transport for only one year). Characteristics of patients who were frequent users of EMS transport and those of all cases with EMS transport were examined. Results Of the total 205 patients and 1204 cases of frequent EMS transport, 85 (42%) patients and 755 (63%) cases were in the consecutive group. Patients in the consecutive group were more likely to have risky alcohol use, unemployed state, and medical aid type of payment for ED treatment than those in the non-consecutive group. More patients had previous experience of EMS transport to the study hospital ED in the consecutive group and the number of cases with alcohol ingestion was higher in the consecutive group. Elapsed time from EMS call to ED arrival was longer for the consecutive group. Conclusion Risky alcohol use, unemployed state, and previous experience of EMS transport were associated with consecutive and frequent use of EMS transport in frequent users of EMS transport.

Recurrent stroke arrival time

BackgroundStroke patients and family members should receive stroke education including recognition of stroke symptoms and prompt activation of emergency medical services (EMS). The impact of this education is unclear. We aimed to measure the associations between EMS use and timing of hospital arrival and first-ever and recurrent strokes as a proxy for stroke education. MethodsThe study analyzed data from validated strokes identified by the Brain Attack Surveillance in Corpus Christi (BASIC) project between 1/1/2000-1/1/2020. We analyzed 5,617 first-ever strokes, 259 instances of recurrent stroke within 1 year of the first (early recurrence), and 451 recurrent strokes over 1 year from the first (late recurrence). Following imputation, associations of both EMS arrival (available starting late 2011) and early arrival (< 3 hours) with first-ever versus recurrent stroke (early and late) were assessed with logistic models, accounting for the clustering of multiple strokes per participant with generalized estimating equations. Full model covariates included stroke type, initial stroke severity, marital status, race/ethnicity, gender, age, insurance, education, and EMS use (early arrival model only). ResultsCompared to first-ever stroke, there were significantly higher unadjusted odds of arrival by EMS for the late recurrence group (late recurrence OR = 1.54, 95% CI = 1.18-1.99; early arrival OR = 1.24, 95% CI = 0.87-1.76). The association for late recurrence remained significant after adjustment (aOR = 1.46, 95% CI = 1.09-1.95). The pre-2010 unadjusted odds of early arrival were non-significant for both early and late recurrence groups (late recurrence OR = 1.05, CI = 0.70-1.56; early recurrence OR = 0.85, CI = 0.54-1.33), while late recurrence was associated with early arrival after 2010 (OR = 1.32, 95% CI = 1.03-1.69). After full adjustment, it was no longer significant (aOR = 1.25, 95% CI = 0.96-1.62). Higher initial stroke severity, married status, and EMS use were associated with higher odds of early arrival, while African Americans (AAs) had lower odds than non-Hispanic Whites (NHWs). However, AAs did have higher odds of EMS use relative to NHWs. Those who were married and living together had borderline significant lower odds of EMS use compared to those who were not. ConclusionsOur study examines the association of repeat stroke on early arrival and EMS use as a surrogate for adequate stroke education. Recurrence at least one year after the first stroke was associated with higher EMS usage, but there was not enough evidence to establish a relationship with early arrival after accounting for EMS usage and possible confounders. By examining subsets, we can identify groups that would benefit from targeted education. For example, younger, non-AA patients with smaller strokes would benefit from more education on EMS use and African American patients would benefit from education related to faster recognition or urgency of presentation.

Appropriateness of frequent use of emergency departments: A retrospective analysis in Rome, Italy.

Frequent users (FUs) are patients who repeatedly and inappropriately visit the emergency department (ED) for low-grade symptoms that could be treated outside the hospital setting. This study aimed to investigate the phenomenon of the FU in Rome by profiling such users and analyzing ED attendance by FUs. The analysis was carried out for attendance in 2021 at 15 EDs in the Local Health Authority Roma 1 geographical area. A digital app collected data, including information on the following variables: number of attendance, demographic characteristics, emergency medical service (EMS) usage, triage code, and appropriateness of attendance. COVID-19 diagnosis was also studied to analyze any possible influence on ED attendance. Differences between FUs and non-FUs were investigated statistically by t-test and chi-square test. Univariate analysis and multivariable logistic regression were performed to analyze the associated factors. A total of 122,762 ED attendance and 89,036 users were registered. The FU category represented 2.9% of all users, comprising 11.9% of total ED attendance. There was a three times higher frequency of non-urgent codes in attendance of FU patients (FU: 9.7%; non-FU: 3.2%). FUs were slightly more likely to have used the EMS (13.6% vs. 11.4%) and had a lower frequency of appropriate ED attendance (23.8% vs. 27.0%). Multivariate logistic analysis confirmed a significant effect of triage code, gender, age, EMS usage, and COVID-19 diagnosis for the appropriateness of attendance. The results were statistically significant (p < 0.001). The FU profile describes mostly non-urgent and inappropriate attendance at the ED, including during the COVID-19 pandemic. This study represents an important tool for strengthening preventive policies outside the hospital setting. The Italian National Recovery and Resilience Plan represents an excellent opportunity for the development of new strategies to mitigate the phenomenon of FUs.

Is 911 The Answer? A Retrospective Review of Emergency Medical Services Use by Home Care Providers.

With the Ontario healthcare system under strain the use of resources-particularly emergency medical services (EMS) is an increasing focus. Recent work has identified long-term care facilities as high users of EMS despite access to health-related support outside of the hospital. However, such insights are not available for home care. A retrospective review of administrative records of EMS calls drawn from over 6 million visits by home care providers found relatively low call rates: 8.4 calls per 100 000 personal support visits, 4.1 calls per 100 000 for rehabilitation providers, and 0.9 calls per 100 000 for nurses. The majority (85%) of calls resulted in transport to the hospital; the notable exception was fall-related events, and of these falls, a third (32%) were treated at home. Classification of reported physical symptoms suggests opportunities for leveraging in-home clinical specialists to avoid hospital transport where possible and preserve EMS capacity to respond to the most urgent and severe events.

The Effect of Sustained Poor Air Quality on EMS Call Volume and Characteristics: A Time-Stratified Case-Crossover Study.

As wildfires and air pollution become more common across the United States, it is increasingly important to understand the burden they place on public health. Previous studies have noted relationships between air quality and use of Emergency Medical Services (EMS), but until now, these studies have focused on day-to-day air quality. The goal of this study is to investigate the effect of sustained periods of poor air quality on EMS call characteristics and volume. Using a time-stratified case-crossover design, the effect of exposure to periods of poor air quality on number and type of EMS calls in California, USA from 2014-2019 was observed. Poor air quality periods greater than three days were identified at the United States Environmental Protection Agency's (EPA's) Air Quality Index (AQI) levels of Unhealthy for Sensitive Groups (AQI 100) and Unhealthy (AQI 150). Periods less than three days apart were combined. Each poor air quality period was matched with two one-week controls, the first being the closest preceding week that did not intersect a different case. The second control was the closest week at least three days after the case and not intersecting with a different case. Due to seasonal variation in EMS usage, from the initial cases, cases were used only if it was possible to identify controls within 28 days of the case. A conditional Poisson regression calculated risk ratios for EMS call volume. Comparing the case periods to the controls, significant increases were found at AQI >100 for total number of calls, and the primary impressions categories of emotional state or behavior, level of consciousness, no patient complaint, other, respiratory, and abdominal. At an AQI >150, significance was found for the primary impressions categories of other, pain, respiratory, and digestive. These data demonstrate increased EMS calls during sustained poor air quality, and that several EMS primary impression categories are disproportionately affected. This study is limited by the imprecision of the primary impression's classification provided by the EMS clinician responding to the EMS call. More research is needed to understand the effects of periods of poor air quality on the EMS system for more efficient deployment of resources.

Paediatric frequent use of emergency medical services: a systematic review

BackgroundFrequent use of emergency medical services (EMS) is recognised to be a global phenomenon, although paediatric frequent use is poorly understood. This systematic review aimed to understand how paediatric frequent...

A new paradigm in management of frequent attenders to emergency departments with severe alcohol use disorder-A pilot study for assertive community treatment in Singapore.

A majority of frequent users of emergency medical services in Singapore present with alcohol-related problems. These patients are known to engage poorly with traditional addiction services and frequently attend Emergency Departments (EDs) instead, resulting in high healthcare burden. Assertive Community Treatment (ACT) is an alternative intervention to traditional addiction management. ACT involves community visits with focus on holistic care and harm-reduction. We conducted a prospective before-and-after cohort study at the major tertiary center for addiction disorders in Singapore. The main objective was to evaluate effectiveness of ACT in reducing alcohol-related attendances at EDs nationwide. Socio-demographics, alcohol-related ED attendances, and the Christo Inventory for Substance-misuse Services (CISS) scores were collected for the patients recruited from April 2018 to March 2019. Descriptive analyses and the Wilcoxon Signed-Rank Test were performed. All 14 patients were male with a mean age of 55 years. There was a significant 45.3% reduction in average alcohol-related ED attendances from 6.8 (range 3-22, median 5.5) in the pre-intervention 6-month period, to 3.7 (range 0-28, median 1.5) in the post-intervention 6-month period (Z = -2.244, p = 0.025). CISS scores showed significant improvement from a pre-intervention median of 13.5 (range 9-16) to a post-intervention median of 6.5 (range 1-10, p = 0.001), corresponding to reduction in alcohol-related problem severity. This pilot study suggests that ACT can be effective in reducing alcohol-related ED attendances and alcohol-related problem severity in patients with AUD who frequently attend ED. A multicenter, prospective study using ACT for such patients across four hospitals in Singapore is currently underway.

Emergency medical service utilization among acute ischemic stroke patients in Beijing: An observational study.

ObjectiveTo investigate emergency medical service (EMS) utilization and its associated factors in patients with acute ischemic stroke (AIS), and further explore the urban-rural differences.MethodsMedical records for AIS in all emergency departments in Beijing were obtained from the Beijing Emergency Care Database from January 2018 to December 2021. EMS utilization was described and factors associated with EMS use were examined by multivariable logistic regression models with the generalized estimating equations. Results were compared between urban and rural districts.ResultsA total of 24,296 AIS patients were included in the analysis, and 11,190 (46.1%) were transported to hospitals by EMS. The percentage of EMS usage in urban areas was significantly higher than that in rural areas (53.6 vs. 34.4%, P < 0.001). From 2018 to 2021, EMS utilization was on the increase (P-value for trend <0.001) with a higher average annual growth rate in rural areas (12.6%) than in urban (6.4%). Factors associated with EMS utilization were age (OR: 1.20 per 10-year increase, 95% CI: 1.17–1.23), NIHSS scores, off-hour arrival (OR: 1.32, 95% CI: 1.23–1.37), treatment in tertiary hospitals (OR: 1.75, 95% CI: 1.60–1.92), and possessing comorbidities such as coronary artery disease (OR: 1.15, 95% CI: 1.17–1.24), atrial fibrillation (OR: 1.56, 95% CI: 1.41–1.73), prior stroke (OR: 0.84, 95% CI: 0.78-0.90) or dyslipidemia (OR: 0.78, 95% CI: 0.71–0.85).ConclusionThis study demonstrated an inadequate use of EMS among AIS patients in Beijing, especially in rural areas, and revealed several associated factors. Enhanced education programs and EMS accessibility are necessary particularly for high-risk individuals and regions.

Applications and User Perceptions of Smart Glasses in Emergency Medical Services: Semistructured Interview Study.

BackgroundSmart glasses have been gaining momentum as a novel technology because of their advantages in enabling hands-free operation and see-what-I-see remote consultation. Researchers have primarily evaluated this technology in hospital settings; however, limited research has investigated its application in prehospital operations.ObjectiveThe aim of this study is to understand the potential of smart glasses to support the work practices of prehospital providers, such as emergency medical services (EMS) personnel.MethodsWe conducted semistructured interviews with 13 EMS providers recruited from 4 hospital-based EMS agencies in an urban area in the east coast region of the United States. The interview questions covered EMS workflow, challenges encountered, technology needs, and users’ perceptions of smart glasses in supporting daily EMS work. During the interviews, we demonstrated a system prototype to elicit more accurate and comprehensive insights regarding smart glasses. Interviews were transcribed verbatim and analyzed using the open coding technique.ResultsWe identified four potential application areas for smart glasses in EMS: enhancing teleconsultation between distributed prehospital and hospital providers, semiautomating patient data collection and documentation in real time, supporting decision-making and situation awareness, and augmenting quality assurance and training. Compared with the built-in touch pad, voice commands and hand gestures were indicated as the most preferred and suitable interaction mechanisms. EMS providers expressed positive attitudes toward using smart glasses during prehospital encounters. However, several potential barriers and user concerns need to be considered and addressed before implementing and deploying smart glasses in EMS practice. They are related to hardware limitations, human factors, reliability, workflow, interoperability, and privacy.ConclusionsSmart glasses can be a suitable technological means for supporting EMS work. We conclude this paper by discussing several design considerations for realizing the full potential of this hands-free technology.

Association between intention to call EMS in stroke patients and level of hospital classification and emergency medical service usage among stroke patients in China.

Different categories of hospitals in China have varying levels of patient education. Stroke recognition and emergency medical services (EMS) usage in patients appears to be closely associated with patient education in hospital. This study aimed to explore the effect of hospital classification in China on a patient's ability to recognise stroke symptoms and the likelihood of using the EMS. A cross-sectional, community-based study was conducted from January to May 2017, and 1,426 residents who had previously been hospitalised were analysed. The patients involved in the study were from 69 administrative areas in China. Multivariable logistic regression models were developed separately for primary, secondary, and tertiary hospitals to identify the associations between hospital grades and patient stroke recognition or the prospects of them using the EMS. Among the 1,426 patients studied, 725 had been admitted to tertiary hospitals, 448 to secondary hospitals, and 253 to primary hospitals. According to univariate analysis, tertiary hospital patients were more likely to use the EMS than patients in primary and secondary hospitals. The difference therein was still significant after full adjustment. Patients in tertiary hospitals were significantly more likely to use the EMS promptly compared to patients in primary or secondary hospitals. Therefore, patient education on timely EMS usage at stroke onset should be enhanced in primary and secondary hospitals in China.

A One-Year Cross Sectional Analysis of Emergency Medical Services Utilization and Its Association with Hypertension in Pregnancy

Objective: To evaluate the prehospital obstetric population that utilizes emergency medical services (EMS) and their association with hypertensive disorders of pregnancy. Methods: We conducted a retrospective evaluation of one year of all medical calls from a large, municipal, midwestern fire department. Inclusion criteria included all pregnant patients transported to a hospital by EMS. Descriptive statistics were calculated to evaluate prehospital event information (e.g., zip code, time, and duration of call), patient characteristics, and clinical management data regarding blood pressure. Census data were used to compare neighborhood information with poverty rates. Results: Of the 1,575 identified patients, 64.4% (1015/1575) presented with obstetric complaints, 57.4% (700/1220) were in their third trimester and 72.7% (686/944) were multiparous. The median call duration was 17 (interquartile range 12–22) minutes. In the areas where EMS usage was highest, one quarter of individuals lived below the poverty level. Of the studied population, 32.0% (504/1575) were found to be hypertensive; 14.9% (75/504) of hypertensive patients were found to have severe hypertension. Only one patient (1/1575, 0.06%) presented with a chief complaint of hypertension; the rest were discovered by EMS. The highest rates of hypertension were noted in wealthier areas of the city. Patients with severe hypertension were more likely to present with seizures, consistent with eclampsia. Conclusion: Hypertension is common in the obstetric population using EMS. Prehospital management of hypertensive disorders of pregnancy may focus on identification and treatment of severe pre-eclampsia or eclampsia. Areas with longer call times may consider treatment of severe hypertension. Prehospital treatment of hypertensive disorders of pregnancy could be optimized.

Emergency Medical Services amid New Wave of Coronavirus Disease 2019 Outbreak in Khon Kaen, Thailand

BACKGROUND: COVID-19 outbreaks occurring in many countries around the world have had a significant impact on emergency medical services (EMS) in terms of the number of operations and procedures performed, including those on ambulances. However, the number of EMS amid the rising number of COVID-19 cases in Khon Kaen, Thailand has not been well studied.&#x0D; AIM: The aim of this study was to identify and analyze the relationship between the use of EMS and the outbreak of COVID-19.&#x0D; METHODS: A cross-sectional study was done in Srinagarind Hospital, Khon Kaen, Thailand with a single EMS centered. Data was collected between March 27, 2021 and April 9, 2021 and designated as (Day-7 to Day 7 of pandemic services) as well as normal services which collected data between March 27 and April 9, 2019 (Day-7 to Day 7 of normal services).&#x0D; RESULTS: Three hundred eight EMS operations were examined. A total of 77.9% (n = 95) of pandemic services were for males and the mean age of the patients was 32.1 ± 5.4 years. During the normal services in 2019, the average number of EMS operations was 13.3 ± 2.4 times per day over the two weeks of the study. In 2021, before the outbreak (Day-7 to Day 1), the average number of EMS operations was 13.2 ± 1.8 times/day. After Day 1, there was a drop in the number of EMS operations which was associated with an increase in COVID-19 infections (p &lt; 0.001).&#x0D; CONCLUSIONS: The number of EMS users during the COVID-19 outbreak decreased considerably compared to the pre-epidemic levels and normal service intervals, including the severity of the users, were more severe than normal.

Analysis of the Adequacy of Prehospital Emergency Medical Services Use of Patients Who Visited Emergency Departments in Korea from 2016 to 2018: Data from the National Emergency Department Information System.

Introduction Proper ambulance use is important not only due to the patient's transport quality but also because of the need for efficient use of limited resources allotted by the system. Therefore, this study was conducted to check for overuse or underuse of the ambulance system by patients who visited the emergency department (ED). Methods In this study, a secondary data analysis was conducted using the existing database of the National Emergency Department Information System with all patients who visited EDs over the three-year study period from 2016 to 2018. The study subjects were classified into the following groups: (1) appropriate Emergency Medical Services (EMS) usage; (2) appropriate no EMS usage; (3) underuse; and (4) overuse groups. Results Of 18,298,535 patients, 11,668,581 (63.77%) were classified under the appropriate usage group, while 6,629,954 (36.23%) were classified under the inappropriate usage group. In the appropriate EMS usage group, there were 2,408,845 (13.16%) patients. In the appropriate no EMS usage group, there were 9,259,706 (50.60%) patients. As for the inappropriate usage group, there were 5,147,352 (28.13%) patients categorized under the underuse group. On the other hand, there were 1,482,602 (8.10%) patients under the overuse group. Conclusion There are many patients who use ambulances appropriately, but there are still many overuse and underuse. Guidelines on ambulance use are necessary for the efficient use of emergency medical resources and for the safety of patients.

Early impact of the COVID-19 pandemic and social restrictions on ambulance missions.

BackgroundThe SARS-CoV-2 coronavirus disease 2019 (COVID-19) has had a major impact on health care services globally. Recent studies report that emergency departments have experienced a significant decline in the number of admitted patients in the early phase of the pandemic. To date, research regarding the influence of COVID-19 on emergency medical services (EMS) is limited. This study investigates a change in the number and characteristics of EMS missions in the early phase of the pandemic.MethodsAll EMS missions in the Northern Ostrobothnia region, Finland (population 295 500) between 1 March to 30 June 2020 were screened and analyzed as the study group. A control group was composed from the EMS calls between the corresponding months in the years 2016–19.ResultsA total of 74 576 EMS missions were screened for the study. Within the first 2 months after the first COVID-19 cases in the study area, the decline in the number of EMS missions was 5.7–13% compared with the control group average. EMS time intervals (emergency call to dispatch, dispatch, en-route, on-scene and hospital handover) prolonged in the COVID-19 period. Dispatches concerning mental health problems increased most in the study period (+1.2%, P < 0.001). Only eleven confirmed COVID-19 infections were encountered by EMS in the study period.ConclusionOur findings suggest that the present COVID-19 pandemic and social restrictions lead to changes in the EMS usage. These preliminary findings emphasize the importance of developing new strategies and protocols in response to the oncoming pandemic waves.

Which health-related reasons lead to prehospital emergency care and how does subjective emergency status connect to subsequent care?

Abstract Objectives/Background In many countries, the use of emergency medical services (EMS) increases steadily each year. At the same time, the percentage of life-threatening complaints decreases. To redesign the system, an assessment and consideration of the patients’ perspectives is helpful. Methods We conducted a paper-based survey of German EMS patients who had at least one case of prehospital emergency care in 2016. Four health insurance companies sent out the questionnaire to 1312 insured persons. We linked the self-reported data of 254 respondents to corresponding claims data provided by their health insurance companies. The analysis focuses a.) how strongly patients tend to call EMS for themselves and others given different health-related scenarios, b.) self-perceived health complaints in their own index case of prehospital emergency care and c.) subjective emergency status in combination with so-called “objective” characteristics of subsequent EMS and inpatient care. We report principal diagnoses of (1) respondents, (2) 57,240 EMS users who are not part of the survey and (3) all 20,063,689 inpatients in German hospitals. Diagnoses for group 1 and 2 only cover the inpatient stay that started on the day of the last EMS use in 2016. Results According to the survey, the threshold to call an ambulance is lower for someone else than for oneself. In 89% of all cases during their own EMS use, a third party called the ambulance. The most common, self-reported complaints were pain (38%), problems with heart and circulation (32%), and loss of consciousness (17%). The majority of respondents indicated that their EMS use was due to an emergency (89%). We could detect no or only weak associations between patients’ subjective urgency and different items for objective care. Conclusion Dispatchers can possibly optimize or reduce the disposition of EMS staff and vehicles if they spoke directly to the patients more often. Nonetheless, there is need for further research on how strongly the patients’ perceived urgency may affect the disposition, rapidness of the service and transport targets.

Characteristics of Emergency Medical Services Utilized by Elderly Residents in Nursing Homes

This study aims to analyze the characteristics of emergency medical services (EMS) utilization among elderly patients divided into two groups depending on place of living: nursing homes and places other than nursing homes. The data includes patients aged 65 years old and over for whom ambulances were requested by the 119 Dispatch Center in Gyeonggi Province from January 1st to December 31st, 2018. Statistical analysis was performed using IBM SPSS Statistics 21.0. The findings showed that EMS ambulances were requested more frequently for female patients in nursing homes than males in other places. Brain disease was the most common medical history of the EMS users at nursing homes (P=0.000). Also, critical medical conditions, such as cardiac arrest (5.4%), altered mental status (16.4%), difficulty breathing (18.6%), and fever (19.2%), were found more than twofold higher among the EMS patients in nursing homes, which were classified as emergency by EMS crews. This study suggests a review and amendment of the legal standards regarding support for emergency medical providers and allocation of ambulances.

A comparison of pre-hospital emergency medical services’ response and duration times in urban versus rural areas of Saudi Arabia

Background Response impacts on treatment outcomes, particularly for time-sensitive illnesses, including trauma. This study compares key outcome measures for emergency medical services (EMS) operating in urban versus rural areas in the Riyadh region of Saudi Arabia. Methods A cross-sectional study of EMS users was conducted using a random sampling method. Primary outcome measures were response time, on-scene time, transport time interval and survival rates. Secondary outcomes were the length of stay in the intensive care unit and hospital. Data were compared between the urban and rural groups using the t-test and chi-square test. Results Eight-hundred patients (n=400 urban, n=400 rural) were included in the final analysis. Cases in rural areas had significantly higher response times and duration times (median response 15 vs. 22 minutes, median duration 43 vs. 62 minutes). Response times were significantly longer for rural areas for MVC, industrial accidents, medical incidents and trauma, but there was no significant difference in duration time for industrial accidents. While urban areas had significantly shorter response times for all incident types, there was no difference with rural areas in duration time for chest injury, gastrointestinal, neurological or respiratory problems. Conclusion The findings indicate that response time and duration differs between urban and rural locations in a number of key areas. The factors underlying these differences need to be the subject of specific follow-up research in order to make recommendations as to the best way to improve EMS in Saudi Arabia and to close the gap in rural and urban service delivery.

Improving timely treatment with a stroke emergency map: The case of northern China.

ObjectiveThe Chinese stroke emergency map (SEM) was implemented in 2017 to reduce prehospital and hospital delays for acute ischemic stroke (AIS) patients suitable for intravenous recombinant tissue plasminogen activator (rt‐PA) thrombolysis. However, data on the time delay following the implementation of an SEM in China are limited.MethodsData for suspected stroke patients from the SEM registry center of Taiyuan, Shanxi Province, from August 2017 to July 2019, patients’ characteristics, thrombolysis rate, and functional outcome at 90 days were analyzed.ResultsOne thousand seven hundred and eighty six patients who arrived at hospitals within 4.5 hr of onset were included; 35.9% arrived by emergency medical services (EMSs), and 1,207 (67.6%) of the population received intravenous rt‐PA. As a result of the SEM, the number of patients treated with rt‐PA increased from 63.9% in phase 1 (August 2017 to July 2018) to 70.5% in phase 2 (August 2018 to July 2019). The median onset‐to‐door and onset‐to‐needle times decreased by five minutes (100 [IQR: 62–135] vs. 105 [IQR: 70–145], p = .005) and nine minutes (158 [IQR: 124–197] vs. 167 [IQR: 132–214], p = .001), respectively. Patients in phase 2 achieved greater independent function outcome at 90 days (79.9% vs. 72.1%; adjusted odds ratio, 2.010; 95% confidence interval, 1.444–2.798). The binary logistic regression models revealed that shorter onset‐to‐needle time (OR: 0.994; 95% CI: 0.992–0.997; p < .001) and lower baseline NIHSS scores (OR: 39.120; 95% CI: 23.477–65.188; p < .001 and OR: 18.324; 95% CI: 11.425–29.388; p < .001 and OR: 3.123; 95% CI: 2.044–4.773; p < .001) were significant predictors for the independent function outcome.ConclusionThe implementation of a stroke emergency map is more likely to reduce prehospital delays and improve function outcomes. Future efforts should attempt to increase EMS usage.

Preferences for emergency medical service transport after childhood injury: An emergency department-based multi-methods study

BackgroundPre-hospital emergency medical services (EMS) transport can be associated with benefits following pediatric injury. However, many pediatric trauma patients do not use EMS. The objective of this study was to elucidate guardians’ decision factors for pre-hospital transport for children after injury. MethodsThis is a multi-methods study of pediatric trauma patients (≤14 years) and their guardians presenting to the ED of a Level I Pediatric Trauma Center via both EMS and non-EMS modalities. Demographic information and injury characteristics were collected. Semi-structured interviews were conducted, and qualitative codes were identified and assigned into themes. Results(Quantitative): Of the 29 child-guardian pairs, five participants initially presented by EMS, 18 were admitted, and the majority (66%) sustained mild injuries. Guardians’ assessment of their child's injury severity did not correlate with Injury Severity Score (ISS). Neither EMS status (did or did not use EMS to transport to first hospital) nor rurality status of participants’ place of residence were associated with disparate management in any of the three scenarios. (Qualitative)Five themes emerged, which informed guardians’ transport decisions: Factors Related to the Nature of the Patient's Injury, Guardian Attributes and Prior Experiences, Access and Availability of EMS, Perceived Risks and Benefits of EMS and Hospital, and Collaborative Decision-Making. Injury characteristics and contextual factors, like perceived EMS response times and advice from family or medical providers, were considered in choices about EMS utilization and hospital selection. Despite the view that EMS response times were important in determining what to do following injury, both EMS and non-EMS users were largely unfamiliar with the capabilities of EMS in their area. Finally, guardians described cost to be a theoretical risk of EMS use, and a few cited this as a factor contributing to their decision-making. ConclusionsGuardians used a variety of considerations to make transport decisions, including the five themes identified above. Future studies could explore modalities to disseminate information about pre-hospital decision-making for guardians and determine the relationship between EMS utilization and patient outcomes.

P101: Seasonal variations in modes of presentation in ST elevation myocardial infarction

Introduction: For patients with ST-elevation myocardial infarction (STEMI), time is myocardium. The sooner STEMI patients receive a definitive intervention, the better their outcomes. The first point of contact with the healthcare system for STEMI patients is either via Emergency Medical Services (EMS), or self-transportation to an Emergency Department (ED). Despite a reduced time to definitive intervention, STEMI patients who use EMS have increased mortality compared to those who self-transport. In an effort to optimize STEMI care pathways, we characterized variations in modes of presentation of STEMI patients in our region. Methods: This study used a retrospective cohort design from a regional STEMI registry. Patients presenting to Hamilton Health Sciences between January 1, 2016, and December 31, 2018 meeting STEMI criteria were included in our analyses. Self-transport patients were analyzed from two academic EDs in Hamilton, Ontario. One hospital was PCI capable and the other, non-PCI capable. Patients transferred from other health regions were excluded from our analyses. Dichotomous variables were compared using χ2 tests. Group means were compared using the Student t-test. Results: Eight hundred and seventy-one patients were included in the analysis, including 675 EMS users, and 196 self-transporting to EDs. Patients self-transporting to EDs were younger (61.5 v. 64.6 y, p &lt; 0.002) and more often male (82.6 v. 69.2%, p &lt; 0.0002) compared to EMS users. There was a non-significant trend towards an increased rate of all STEMI patients self-transporting in the summer months compared to the winter (63 of 215 in summer v. 41 of 185 in winter, 29.3 v. 22.2%, p = 0.10). Comparative analysis between both hospitals yielded an increased rate of self-transportation to the PCI-capable hospital in the summer months compared to winter (46 v. 28, 23.2 v. 16.3%, p = 0.09), but not the other hospital (18 v. 13, 10.6 v. 8.3%, p = 0.57). The majority of self-transporting patients came from postal codes bordering each hospital, and the different rates of self-transportation between hospitals were not associated with recent specialist follow up at those sites. Conclusion: Seasonal trends in modes of presentation in STEMI patients may present an opportunity to optimize STEMI care pathways through resource utilization and patient education. A larger dataset and possible multicenter analysis should be done to determine if significance is obtained with larger sample size.