The demographic impact on the demand for emergency medical services in the urban and rural regions of Bavaria, 2012-2032

The Use of Medical Services for Low-Acuity Emergency Cases in Germany: Protocol for a Multicenter Observational Pilot Study

BACKGROUND

The increasing number of requests for help for acutely ill patients and their management is a major problem in the health systems of many countries, but especially in Germany. Rescue coordination centers and ambulances in Germany are increasingly overloaded. As a result, rides as a part of rescue operations have been increasing in length for years, yet a relevant proportion of these operations represent low-acuity calls (LACs). The basic objective of this pilot study is the quantitative analysis of the potential misuse of requests to the rescue control center. Indications for alternative treatment options and how to handle these treatment options in nonacute, non-life-threatening health conditions, such as minor injuries or minor infectious diseases, will be assessed. The identification of these LACs is vital in order to prevent health care resources in emergency medical care becoming inadequate.

OBJECTIVE

The overarching goal of this study is to determine the percentage of unnecessary rescue missions on site and subsequently to obtain an impression of the paramedics' assessment of alternative treatment options or alternative methods of rescue transportation.

METHODS

This will be an exploratory, noninterventional, cross-sectional study with a quantitative approach. The study is multicentric, with 21 ambulances in 12 different locations. The data for this study were collected via a questionnaire, newly developed for this study, for rescue personnel. Additionally, secondary data from the responsible control center will be linked and processed in an initial descriptive analysis. This descriptive analysis will form the basis for a subsequent variance analysis.

RESULTS

Data collection started as projected on September 18, 2023, and was ongoing until end of November 2023. We expect the documentation of several thousand rescue operations. We expect the following study results: (1) many unnecessary rescue operations, (2) immediate on-site assessment of correct care and treatment, and (3) patients' reasons for calling a rescue coordination center.

CONCLUSIONS

To our knowledge, this is the first observational study in which acute rescue operations are recorded on site. The focus of this study is on the trained paramedics' assessment of whether rescue operations are necessary or not. Additionally, alternative treatments, such as out-of-hours care service or primary care service, are shown for each individual case. The study also intends to cover the question of which factors are relevant and statistically significantly connected to the misuse of ambulances.

TRIAL REGISTRATION

German Register for Clinical Studies (Deutsches Register für Klinische Studien) DRKS00032510; https://drks.de/search/en/trial/DRKS00032510.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID)

DERR1-10.2196/54002.

Analyzing emergency call volume, call durations, and unanswered calls during the first two waves of the COVID-19 pandemic compared to 2019: An observational study of routine data from seven bavarian dispatch centres

Background

The spread of the COVID-19 pandemic and the corresponding implementation of measures such as stay-at-home orders and curfews had a major impact on health systems, including emergency medical services. This study examined the effect of the pandemic on call volumes, duration of calls and unanswered calls to the emergency number 112.

Method

For this retrospective, descriptive study, 986,650 calls to seven emergency dispatch centres in Bavaria between January 01, 2019 and May 31, 2021 were analysed. The absolute number of calls and calls per 100,000 inhabitants as well as the number of unanswered calls are reported. The Mann‒Whitney U test was used to compare mean call durations between 2019 and 2020/2021 during several periods.

Results

Call volume declined during the pandemic, especially during periods with strict lockdown restrictions. The largest decline (-12.9 %) occurred during the first lockdown. The largest reduction in the number of emergency calls overall (-25.3 %) occurred on weekends during the second lockdown. Emergency call duration increased, with the largest increase (+13 s) occurring during the "light" lockdown. The number of unanswered calls remained at a similar level as before the pandemic.

Conclusion

This study showed that the studied Bavarian dispatch centres experienced lower call volumes and longer call durations during the first two waves of the COVID-19 pandemic (up to May 2021). Longer call durations could be the result of additional questions to identify potentially infectious patients. The fact that the number of unanswered calls hardly changed may indicate that the dispatch centres were not overwhelmed during the study period.

Predictors, Prevalence, and Clinical Outcomes of Out-of-Hospital Cardiac Arrests in Croatia: A Nationwide Study

BACKGROUND

Out-of-hospital cardiac arrest (OHCA) remains a pivotal health challenge globally. In Croatia, there has been a knowledge gap regarding the prevalence, predictors, and outcomes of OHCA patients. This study aims to determine the prevalence, prediction, and outcomes of OHCA patients in Croatia.

METHODS

An extensive one-year analysis was performed on all OHCA treated by the Emergency Medical Service in Croatia, based on the Utstein recommendations. Data were extracted from Croatian Institute of Emergency Medicine databases, focusing on adult individuals who experienced sudden cardiac arrest in out-of-hospital settings in Croatia.

RESULTS

From 7773 OHCA cases, 9.5% achieved spontaneous circulation pre-hospital. Optimal outcomes corresponded to EMS intervention within ≤13 min post-arrest onset AUC = 0.577 (95% CI: 0.56-0.59; p < 0.001) and female gender OR = 1.81 (95% CI: 1.49-2.19; p < 0.001). Northern Croatia witnessed lower success rates relative to the capital city Zagreb OR = 0.68 (95% CI: 0.50-0.93; p = 0.015).

CONCLUSIONS

Early intervention by EMS, specifically within a 13-min period following the onset of a cardiac arrest, significantly enhances the probability of achieving successful OHCA outcomes. Gender differences and specific initial heart rhythms further influenced the likelihood of successful outcomes. Regional disparities, with reduced success rates in northern Croatia compared to the City of Zagreb, were evident.

Kooperation zwischen Rettungsdienst und kommunaler Altenhilfe: ein Weg zur Entlastung der Notfallversorgung?

Hintergrund

Seit Jahren wächst der Druck auf die Notfallversorgung. Rettungsdienste werden zunehmend mit sozialen und pflegerischen Handlungsbedarfen älterer Notrufender konfrontiert. Mangels Alternativen werden diese Personen vielfach, auch ohne akutmedizinischen Handlungsbedarf, in Krankenhäuser transportiert. Ein 2018 in Wiesbaden entwickeltes Kooperationsverfahren zwischen Rettungsdienst und kommunalen Beratungsstellen für selbständiges Leben im Alter zielt darauf ab, Rettungskräften ein Instrument an die Hand zu geben, ältere Personen mit sozialen Bedarfen zu melden und so Krankenhausaufnahmen aufgrund „sozialer Indikation“ zu vermeiden.

Material und Methoden

Es wurden 494 Meldungen der Rettungskräfte ausgewertet und mit den Rückmeldungen der Sozialarbeitenden verglichen. Neben diesen fallbezogenen Daten geht eine Befragung von Rettungskräften zur Bewertung des Verfahrens und der Praktikabilität des Meldeinstruments in die Auswertung mit ein.

Ergebnisse

Die Meldungen durch die Rettungskräfte steigen kontinuierlich; das Verfahren erfährt durch diese Berufsgruppe eine hohe Wertschätzung. Die gemeldeten sozialen Bedarfe der Notrufenden werden durch die Mitarbeitenden der Beratungsstellen größtenteils bestätigt. Häusliche Unterversorgung, soziale Isolation und Verwahrlosung stellen die größten Problembereiche dar. Etwa die Hälfte der Notrufenden konnte zu Hause beraten bzw. mit Unterstützungsangeboten versorgt werden.

Diskussion

Das Kooperationsverfahren ist ein vielversprechender Ansatz zur Entlastung des Rettungsdiensts und der Krankenhäuser. Das Aufgreifen nichtmedizinischer Bedarfe älterer Notrufpatient*innen durch die kommunalen Beratungsstellen ermöglicht eine frühzeitige und bedarfsgerechte Stabilisierung häuslicher Versorgungssituationen und leistet somit einen Beitrag zur Reduzierung von Krankenhauseinweisungen ohne klinisch-medizinische Indikation.

Analysis of costs and utilization of ambulance services in the ministry of health facilities, Malaysia

Background

Despite emergency ambulance services playing a pivotal role in accessibility to life-saving treatments in Malaysia, there are still numerous gaps in knowledge in terms of their utilization and cost. This leads to current policies on procurement, maintenance, and allocation being predicated on historical evidence and expert opinions. This study thus aims to analyse the cost and utilization of ambulance services in selected public health facilities in Malaysia.

Methods

A cross-sectional study was employed involving 239 ambulances from selected hospitals and clinics. Ambulance service utilization was based on the number of trips, distance and duration of travel obtained from travel logbooks. A mixed top-down and activity-based costing approach was used to estimate the monthly cost of ambulance services. This constituted personnel, maintenance, fuel, overhead, consumables, ambulance, and medical equipment costs. The utilization and costs of ambulance services were further compared between settings and geographical locations.

Results

The average total cost of ambulance services was MYR 11,410.44 (US$ 2,756.14) for hospitals and MYR 9,574.39 (US$ 2,312.65) for clinics, albeit not significantly different. Personnel cost was found to be the main contributor to the total cost, at around 44% and 42% in hospitals and clinics, respectively. There was however a significant difference in the total cost in terms of the type and age of ambulances, in addition to their location. In terms of service utilization, the median number of trips and duration of ambulance usage was significantly higher in clinics (31.88 trips and 58.58 hours) compared to hospitals (16.25 trips and 39.25 hours).

Conclusions

The total cost of ambulance services was higher in hospitals compared to clinics, while its utilization showed a converse trend. The current findings evidence that despite the ambulance services being all under the MOH, their operating process and utilization reflected an inherent difference by setting.

Zwei Jahre Pilotphase Gemeindenotfallsanitäter in der Region Oldenburg (Niedersachsen)

Hintergrund

Steigende Einsatzzahlen im Rettungsdienst, demografischer Wandel sowie Veränderungen bei der Morbidität und in den Strukturen der Akutversorgung erfordern eine Weiterentwicklung der Versorgungsoptionen an den Sektorengrenzen zwischen ambulanter und stationärer Versorgung. Zur Erprobung von Gemeindenotfallsanitätern (G-NFS) als eine unterstützende Ressource des Rettungsdienstes wird in der Region Oldenburg seit 2019 ein Modellprojekt mit wissenschaftlicher Begleitung durchgeführt.

Methodik

Im Rahmen einer Mixed-Methods-Studie wurden Fokusgruppeninterviews mit den vier regionalen G‑NFS-Gruppen (Stadt Oldenburg und die Kreise Vechta, Cloppenburg und Ammerland) durchgeführt. Die Interviews (Teilnahme ca. 56,7 % aller G‑NFS) wurden jeweils durch eine kurze anonyme Online-Umfrage (Teilnahme ca. 53,3 % aller G‑NFS) mit denselben Teilnehmern ergänzt. Interviews und Online-Befragung zielten auf die persönlichen Einsatzerfahrungen vor und während der Coronapandemie ab. Die Interviewergebnisse wurden anhand thematischen Codierens analysiert und ausgewertet.

Ergebnisse

An den Interviews und der anschließenden Umfrage nahmen 17 bzw. 16 G-NFS teil. Aus Sicht der G‑NFS ergänzt die Ressource das bisherige Reaktionsspektrum des Rettungsdienstes in Form von Rettungswagen (RTW) oder Krankentransportwagen (KTW) um eine sinnvolle und fachgerechte Komponente, die insbesondere zur erforderlichen Entlastung der Einsatzmittel der Notfallversorgung beiträgt. Die notwendige sektorenübergreifende Zusammenarbeit mit anderen Diensten verläuft in Abhängigkeit von den jeweiligen lokalen Gegebenheiten unterschiedlich, aber insgesamt zielgerichtet und effizient; Gleiches gilt für die Zusammenarbeit mit den zuständigen Rettungsleitstellen. G‑NFS wurden in den Hochphasen der Pandemie in die Triagierung von COVID-Verdachtsfällen einbezogen und haben zur dringend gebotenen Entlastung des Rettungssystems in der Region beigetragen.

Diskussion

Das G‑NFS-Konzept hat sich aus Sicht der Mitarbeiter in der bisherigen Projektlaufzeit bewährt. Die vorliegenden Erfahrungen bieten eine gute Grundlage für die konzeptionelle Weiterentwicklung des G‑NFS.

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

Objective

To investigate emergency medical service (EMS) utilization and its associated factors in patients with acute ischemic stroke (AIS), and further explore the urban-rural differences.

Methods

Medical 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.

Results

A 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).

Conclusion

This 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.

Apart from the Medical Complaints, Why do Patients Use Emergency Medical Services? Results of a Patient Survey

INTRODUCTION

Many countries face an increased use of emergency medical services (EMS) with a decreasing percentage of life-threatening complaints. Though there is a broad discussion among experts about the cause, patients' self-perceived, non-medical reasons for using EMS remain largely unknown.

METHODS

The written survey included EMS patients who had≥1 case of prehospital emergency care in 2016. Four German health insurance companies sent out postal questionnaires to 1312 insured patients. The response rate was 20%; 254 questionnaires were eligible for descriptive and interferential analyses (t-tests, chi2-tests, logistic models).

RESULTS

The majority of respondents indicated that their EMS use was due to an emergency or someone else's decision (≥84%; multiple checks allowed); 56% gave need for a quick transport as a reason. Other frequently stated reasons addressed the health care system (e. g., complaints outside of physicians' opening hours) and insecurity/anxiety about one's state of health (>45% of the respondents). "Social factors" were similarly important (e. g., 42% affirming, "No one could give me a ride to the emergency department or doctor's office."). Every fifth person had contact with other emergency care providers prior to EMS use. Respondents negating an emergency as a reason were less likely to confirm wanting immediate medical care on site or quick transports compared to those affirming an emergency. Patients using EMS at night more often denied having an emergency compared to patients with access to care during the day.

CONCLUSION

The study identified a bundle of reasons leading to EMS use apart from medical complaints. Attempts for needs-oriented EMS use should essentially include optimization of the health care and social support system and measures to reduce patients' insecurity.

Emergency Medical Services Demand: An Analysis of County-Level Social Determinants

OBJECTIVES

Variations in the demand for Emergency Medical Services (EMS) exist when observed at a local level. This unspecified heterogeneity leads to an investigation of social factors contributing to EMS demand.

METHODS

Data for this study were collected from publicly available EMS reports from Florida and Oklahoma for 2009 - 2015. Health and social data were gathered from County health rankings and roadmap reports. Data were combined into a single dataset, and pooled ordinary-least-squares models with time-fixed effects were utilized for tests of inference. EMS call volume was log-transformed to derive a semi-elasticity function.

RESULTS

A total of 874 county-year observations were analyzed. Increases in poor/fair health (95% CI: 0.6% - 3.9%), binge drinking (95% CI: 1.6% - 3.5%), teen birth rate (95% CI: 1.1% - 5.2%), unemployment rate (95% CI: 0.5% - 3.9%), and violent crime rate (95% CI: 1.0% - 3.0%) were associated with an increase in the EMS demand rate.

CONCLUSION

The data supports the notion that some community measures have an effect on EMS demand as counties with higher levels of poor health, binge drinking, teen births, unemployment, and violent crime saw higher EMS demand. These factors may have been treated as spurious, or overlooked by policy makers and EMS leadership.

Integrierte Versorgung von Rettungsdienstpatienten. Konsentierte Empfehlungen für optimale Prozesse und Strukturen

Hintergrund

Das vom Innovationsfonds geförderte Projekt „Integrierte Notfallversorgung: Rettungsdienst im Fokus“ (Inno_RD) bringt anhand datenbasierter Analysen Handlungsempfehlungen zur Verbesserung der (Notfall‑)Versorgung in den Diskurs zum Gesetzentwurf zur Reformierung der Notfallversorgung ein.

Methoden

Die Handlungsempfehlungen (HE) basieren auf Analysen von drei Fokusgruppen mit Experten der Notfallversorgung, auf Rettungsdienst- und Krankenkassendaten und einer schriftlichen Patientenbefragung. Im Rahmen einer anschließenden Online-Befragung wurden 55 Aussagen (davon 35 HE und 20 vertiefende Statements) zwei getrennten Gruppen, d. h. den Fokusgruppenteilnehmern („purposive sampling“) und weiteren Experten der Notfallversorgung („convenience sample“ mit gesondertem Befragungslink) vorgelegt. Die Teilnehmer wurden gebeten, die Empfehlungen zu bewerten. 442 Fragebögen wurden für die Analyse berücksichtigt.

Ergebnisse

Alle 55 Aussagen wurden von beiden Gruppen mehrheitlich positiv bewertet (≥50 % Zustimmung), d. h. 19 Aussagen für den Bereich Leitstelle, 14 für Patientenversorger, 19 zur Dokumentation und Evaluation sowie drei HE, die die Bevölkerung adressieren. Vorschläge für die Leitstellen und die Dokumentation und Evaluation von Einsätzen wurden überwiegend mit starkem Konsens (>95 %) und Empfehlungen für den Bereich bevölkerungsbezogene HE und Patientenversorger mehrheitlich mit Konsens (>75–95 %) bewertet.

Schlussfolgerung

Die Aussagen fanden bei den an der Umfrage teilnehmenden Experten große Zustimmung. Die Empfehlungen sollten im Diskurs zur Organisation und Qualitätssicherung der Notfallversorgung berücksichtigt werden.

Assessing Trauma Center Accessibility for Healthcare Equity Using an Anti-Covering Approach

Motor vehicle accidents are one of the most prevalent causes of traumatic injury in patients needing transport to a trauma center. Arrival at a trauma center within an hour of the accident increases a patient's chances of survival and recovery. However, not all vehicle accidents in Tennessee are accessible to a trauma center within an hour by ground transportation. This study uses the anti-covering location problem (ACLP) to assess the current placement of trauma centers and explore optimal placements based on the population distribution and spatial pattern of motor vehicle accidents in 2015 through 2019 in Tennessee. The ACLP models seek to offer a method of exploring feasible scenarios for locating trauma centers that intend to provide accessibility to patients in underserved areas who suffer trauma as a result of vehicle accidents. The proposed ACLP approach also seeks to adjust the locations of trauma centers to reduce areas with excessive service coverage while improving coverage for less accessible areas of demand. In this study, three models are prescribed for finding optimal locations for trauma centers: (a) TraCt: ACLP model with a geometric approach and weighted models of population, fatalities, and spatial fatality clusters of vehicle accidents; (b) TraCt-ESC: an extended ACLP model mitigating excessive service supply among trauma center candidates, while expanding services to less served areas for more beneficiaries using fewer facilities; and (c) TraCt-ESCr: another extended ACLP model exploring the optimal location of additional trauma centers.

Socio-spatial disparities in access to emergency health care-A Scandinavian case study

Having timely access to emergency health care (EHC) depends largely on where you live. In this Scandinavian case study, we investigate how accessibility to EHC varies spatially in order to reveal potential socio-spatial disparities in access. Distinct measures of EHC accessibility were calculated for southern Sweden in a network analysis using a Geographical Information System (GIS) based on data from 2018. An ANOVA test was carried out to investigate how accessibility vary for different measures between urban and rural areas, and negative binominal regression modelling was then carried out to assess potential disparities in accessibility between socioeconomic and demographic groups. Areas with high shares of older adults show poor access to EHC, especially those in the most remote, rural areas. However, rurality alone does not preclude poor access to EHC. Education, income and proximity to ambulance stations were also associated with EHC accessibility, but not always in expected ways. Despite indications of a well-functioning EHC, with most areas served within one hour, socio-spatial disparities in access to EHC were detected both between places and population groups.

Coverage versus response time objectives in ambulance location

Background

This paper deals with the location of emergency medical stations where ambulances waiting to be dispatched are parked. The literature reports a lot of mathematical programming models used to optimize station locations. Most studies evaluate the models only analytically applying the same simplifying assumptions that were used in the modelling phase. In addition, they concentrate on systems operating one type of emergency units in homogeneous urban areas. The goal of our study is to identify which optimization criterion the emergency medical service (EMS) outcomes benefit from the most and which model should be used to design tiered systems in large urban–rural areas.

Methods

A bi-criteria mathematical programming model is proposed. The criteria include the accessibility of high-priority patients within a short time limit and average response time to all patients. This model is being compared to the p-median model with a single response time objective and to a hierarchical pq-median model that considers two different vehicle types. A detailed computer simulation model is used to evaluate the solutions. The methodology is verified in the conditions of the Slovak Republic using real historical data on 149,474 ambulance trips performed in 2015.

Results

All mathematical models improve EMS performance by relocating some stations compared to the current distribution. The best results are achieved by the hierarchical median-type model. The average response time is reduced by 58 s, the number of calls responded to within 15 min is increased by 5% and the number of high-priority calls responded to within 8 min by 6%.

Conclusions

The EMS systems operating in heterogeneous areas should be designed to minimize response times, and not to maximize the number of calls served within a given time limit.

Which symptoms pose the highest risk in patients calling for an ambulance? A population-based cohort study from Denmark

BACKGROUND

Emergency medical service patients are a vulnerable population and the risk of mortality is considerable. In Denmark, healthcare professionals receive 112-emergency calls and assess the main reason for calling. The main aim was to investigate which of these reasons, i.e. which symptoms or mechanism of injury, contributed to short-term risk of death. Secondary aim was to study 1-30 day-mortality for each symptom/ injury.

METHODS

Historic population-based cohort study of emergency medical service patients calling 112 in the North Denmark Region between 01.01.2016-31.12.2018. We defined 1-day mortality as death on the same or the following day. The frequency of each symptom and cumulative number of deaths on day 1 and 30 together with 1- and 30-day mortality for each symptom/mechanism of injury is presented in proportions. Poisson regression with robust variance estimation was used to estimate incident rates (IR) of mortality with 95% confidence intervals (CI), crude and age and sex adjusted, mortality rates on day 1 per 100,000 person-year in the population.

RESULTS

The five most frequent reasons for calling 112 were "chest pain" (15.9%), "unclear problem" (11.9%), "accidents" (11.2%), "possible stroke" (10.9%), and "breathing difficulties" (8.3%). Four of these contributed to the highest numbers of deaths: "breathing difficulties" (17.2%), "unclear problem" (13.2%), "possible stroke" (8.7%), and "chest pain" (4.7%), all exceeded by "unconscious adult - possible cardiac arrest" (25.3%). Age and sex adjusted IR of mortality per 100,000 person-year was 3.65 (CI 3.01-4.44) for "unconscious adult - possible cardiac arrest" followed by "breathing difficulties" (0.45, CI 0.37-0.54), "unclear problem"(0.30, CI 0.11-0.17), "possible stroke"(0.13, CI 0.11-0.17) and "chest pain"(0.07, CI 0.05-0.09).

CONCLUSION

In terms of risk of death on the same day and the day after the 112-call, "unconscious adult/possible cardiac arrest" was the most deadly symptom, about eight times more deadly than "breathing difficulties", 12 times more deadly than "unclear problem", 28 times more deadly than "possible stroke", and 52 times more deadly than "chest pain". "Breathing difficulties" and "unclear problem" as presented when calling 112 are among the top three contributing to short term deaths when calling 112, exceeding both stroke symptoms and chest pain.

Binary Programming Model for Rostering Ambulance Crew-Relevance for the Management and Business

The nature of health care services is very complex and specific, thus delays and organizational imperfections can cause serious and irreversible consequences, especially when dealing with emergency medical services. Therefore, constant improvements in various aspects of managing and organizing provision of emergency medical services are vital and unavoidable. The main goal of this paper is the development and application of a binary programming model to support decision making process, especially addressing scheduling workforce in organizations with stochastic demand. The necessary staffing levels and human resources allocation in health care organizations are often defined ad hoc, without empirical analysis and synchronization with the demand for emergency medical services. Thus, irrational allocation of resources can result in various negative impacts on the financial result, quality of medical services and satisfaction of both patients and employees. We start from the desired staffing levels determined in advance and try to find the optimal scheduling plan that satisfies all significant professional and regulatory constraints. In this paper a binary programming model has been developed and implemented in order to minimize costs, presented as the sum of required number of ambulance crews. The results were implemented for staff rostering process in the Ambulance Service Station in Subotica, Serbia. Compared to earlier scheduling done ad hoc at the station, the solution of the formulated model provides a better and equable engagement of crews. The developed model can be easily modified and applied to other organizations with the same, stochastic, nature of the demand.

Entwicklung der Frequenz und des Spektrums von Rettungsdiensteinsätzen in Deutschland

Hintergrund

Die Berichterstattung aus einzelnen Bundesländern zeigt über viele Jahre kontinuierlich steigende Einsatzzahlen im bodengebundenen Rettungsdienst.

Fragestellung

Ziel der Arbeit ist es aufzuzeigen, wie stark sich die Einsatzzahlen und das Einsatzspektrum im Rettungsdienst in den letzten Jahren entwickelt haben.

Material und Methode

Die Arbeit führt nach Literaturrecherche geeignete Publikationen synoptisch zusammen, um einen umfassenden Überblick der aktuellen Erkenntnisse zu geben.

Ergebnisse

Vollerhebungen der Einsatzzahlen einzelner Bundesländer sowie Hochrechnungen der Rettungsdiensteinsätze auf Bundesebene zeigen jährliche Zuwachsraten von etwa 5 %. Zudem belegen einzelne Untersuchungen vor allem einen Anstieg nichttraumatologischer Einsatzgründe. Sowohl die Einsatzzunahme als auch die Änderung im Einsatzspektrum können, neben weiteren Einflussfaktoren, u. a. auf den demografischen Wandel zurückgeführt werden.

Schlussfolgerungen

Um dem Anstieg und der Änderung der Inanspruchnahme zu begegnen, erscheint neben der Ausweitung bestehender Angebote der Notfallversorgung die Etablierung alternativer Ansätze (z. B. Telenotarzt) zielführend. Begleitend sollte eine umfassende Datenerfassung und -auswertung erfolgen, um im Rahmen des Qualitätsmanagements ein kontinuierliches Nachsteuern des Systems zu erlauben.

Disparities between Rural and Urban Areas of the Central Region of Saudi Arabia in the Utilization and Time-Centeredness of Emergency Medical Services

The purpose of this study was to explore differences in characteristics of missions dispatched by Emergency Medical Services (EMS) between rural and urban areas of Riyadh province in Saudi Arabia (SA). It also aimed at identifying weaknesses related to utilization and Response Time (RT). The study retrospectively evaluated 146,639 completed missions in 2018 by measuring the utilization rate in rural and urban areas. The study shows there are six times more ambulance crews available for rural areas compared to urban. There were 22.1 missions per 1000 urban inhabitants and 11.2 missions per 1000 in rural areas. The median RT for high urgent trauma cases was 20.2 min in rural compared to 15.2 min in urban areas (p < 0.001). In urban areas, the median RT for high urgent medical cases was 16.1 min, while it was 15.2 min for high urgent trauma cases. Around 62.3% of emergency cases in urban and 56.5% in rural areas were responded to within 20.00 min. Women utilized EMS less frequently. The RT was increased in urban areas compared to previous studies. The RT in the central region of SA has been identified as equal, or less than 20.00 min in 62.4% of all emergency cases. To further improve adherence to the 20' target, reorganizing the lowest urgent cases in the rural areas seems necessary.

Non-specific diagnoses are frequent in patients hospitalized after calling 112 and their mortality is high - a register-based Danish cohort study

Background

The number of patients calling for an ambulance increases. A considerable number of patients receive a non-specific diagnosis at discharge from the hospital, and this could imply less serious acute conditions, but the mortality has only scarcely been studied. The aim of this study was to examine the most frequent sub-diagnoses among patients with hospital non-specific diagnoses after calling 112 and their subsequent mortality.

Methods

A historical cohort study of patients brought to the hospital by ambulance after calling 112 in 2007–2014 and diagnosed with a non-specific diagnosis, chapter R or Z, in the International Classification of Diseases, 10th edition (ICD-10). 1-day and 30-day mortality was analyzed by survival analyses and compared by the log-rank test.

Results

We included 74,847 ambulance runs in 53,937 unique individuals. The most frequent diagnoses were ‘unspecified disease’ (Z039), constituting 47.0% (n 35,279). In children 0–9 years old, ‘febrile convulsions’ was the most frequent non-specific diagnosis used in 54.3% (n 1602). Overall, 1- and 30-day mortality was 2.2% (n 1205) and 6.0% (n 3258). The highest mortality was in the diagnostic group ‘suspected cardiovascular disease’ (Z035) and ‘unspecified disease’ (Z039) with 1-day mortality 2.6% (n 43) and 2.4% (n 589), and 30 day mortality of 6.32% (n 104) and 8.1% (n 1975).

Conclusion

Among patients calling an ambulance and discharged with non-specific diagnoses the 1- and 30-day mortality, despite modest mortality percentages lead to a high number of deaths.

Impact of Physician-staffed Helicopters on Pre-hospital Patient Outcomes: A systematic review

BACKGROUND

Management of pre-hospital patients remains a challenge. In developed countries a physician-staffed helicopter emergency medical service (PS-HEMS) is used in addition to ground emergency medical service (GEMS), but the effect is debated. This systematic review aimed to evaluate the effect of PS-HEMS compared with GEMS on patient outcomes based on the published scientific literature.

METHODS

Medline, EMBASE and the Cochrane Library were systematically searched on November 15, 2019 for prospective, interventional studies comparing outcomes of patients transported by either PS-HEMS or GEMS. Outcomes of interest were mortality, time to hospital and quality of life.

RESULTS

The majority of 18 studies included were observational and difficult to summarize because of heterogeneity. Meta-analysis could not be carried out. Three studies found reduced mortality in patients transported by PS-HEMS compared with GEMS with Odds ratios (OR) of 0.68 (0.47-0.98); 0.29 (0.10-0.82) and 0.21 (0.06-0.73) respectively. Another two studies found improved survival with OR 1.2 (1.0-1.5) and 6.9 (1.48-32.5) in patients transported by PS-HEMS compared with GEMS. In three studies, PS-HEMS was associated with shorter time to hospital. Three studies reported quality of life and found no benefit of PS-HEMS.

CONCLUSION

In this systematic review the studies comparing PS-HEMS with GEMS were difficult to summarize because of heterogeneity. We found a possible survival benefit of PS-HEMS but were unable to conduct a meta-analysis. The overall quality of evidence was low.

Videotelephony-assisted medical direction to improve emergency medical service

INTRODUCTION

In South Korea, on-line medical direction using voice calls has been implemented to improve the quality of the emergency medical system. However, in the same, short time span, video will be able to convey more information than by voice. The purpose of this study is to find out if videotelephony-assisted medical direction (VAMD) can change the intervention of the emergency medical technician compared to using conventional voice calls.

METHODS

We conducted a prospective study of 312 patients with online medical direction from November 2017 to November 2018. We assisted patients with direct medical direction using conventional voice calls from October to November 2017, and then VAMD was implemented from October to November 2018.

RESULTS

From the total number of conventional voice calls, 131 were used for this study, and of the total number of VAMD interventions, 181 were included. There were differences between conventional voice call and VAMD interventions in such types of medical direction as hospital selection (7.6% vs. 36.6%), ECG interpretation (0% vs. 3.4%), and advice on medical techniques (0% vs. 25.1%). The effectiveness of VAMD by survey is greater compared to conventional direct medical direction using voice calls (median value, 3.0 vs. 1.5).

CONCLUSIONS

The number of instances of medical direction for some interventions, such as interpretation of ECG and advice on medical techniques that did not perform well in conventional voice calls, increased in VAMD. VAMD may play an important role in the prehospital emergency care.

Use of pre-hospital emergency medical services in urban and rural municipalities over a 10 year period: an observational study based on routinely collected dispatch data

BACKGROUND

Pre-hospital emergency medical services (EMS) are an integral part of emergency medical care. EMS planning can be achieved by analyzing patterns of use. However, long-term time trends of EMS use have rarely been studied. The objective of this retrospective study was to investigate utilization patterns over a ten year period, and to compare utilization trends between urban and rural municipalities and between events with and without prehospital emergency physician (PEP) dispatch.

METHODS

Routine data collected by 26 dispatch centers in the federal state of Bavaria, Germany, from 2007 to 2016 was analyzed. Emergency locations were classified into five levels of rurality. Negative binomial mixed effects regression models were fitted to predict emergency rates and to investigate differences in rates and utilization trends. Graphical representation methods were used to compare distribution of transport rates and distribution across daytime and weekday.

RESULTS

Twelve million two hundred thousand one hundred fifty-five dispatches assigned to 7,725,636 single emergencies were included. The mean number of emergencies per year and 1000 population (emergency rate) was 42.8 (±16.0) in rural municipalities and 80.7 (±9.3) in large cities. Compared to rural municipalities, cities had higher emergency rates without (IRR = 3.0, CI 2.2-4.0) and with pre-hospital physicians (IRR = 1.5, CI 1.2-2.0). Between 2007 and 2016, the absolute number of emergencies increased by 49.1%. Estimated annual percent change of emergency rates without physician activation ranged from 5.7% (CI 4.3-7.1) in cities to 7.8% (CI 7.6-7.9) in rural areas. Changes in emergency rates with physician attendance were lower, with estimated increases between 1.3 and 2.4%. The average proportion of patients transported to a hospital was lower in cities and remained unchanged. There were no considerable differences or changes in the distribution across daytime and weekdays.

CONCLUSION

Differences between cities and other areas suggest that the planning of EMS should be targeted to regional characteristics. A substantial increase in emergency rates was observed across all areas of Bavaria, but did not impact transport rates or temporal distributions. Further research is needed to better understand the urgency of emergency events and reasons behind increasing EMS utilization.

Integrating cross-border emergency medicine systems: Securing future preclinical medical workforce for remote medical services

The European Union intends to enable its citizens to interact across borders in relevant areas of society and culture to further integrate neighboring regions. Medicine has not been at the core of recent EU-funded efforts in central Europe, partially due to significant differences in health care administration, delivery, reimbursement, and culture. However, impeding changes in social structure and centralization of specialized care warrant changes in preclinical administration of medical care, which are already transforming practices across developed countries in central Europe. Moreover, demographic and social changes are transforming not only patients but also health care providers, thus leading to an increased need for specialized medical personnel, particularly in regions close to formerly secluding borders. The EU-funded cooperation project presented in this article is located in the Euroregion Pomerania, which consists of northeastern Germany and northwestern Poland. This project emerged because of the need to solve practical emergency medicine-related problems for many years, which brought partners together. Unfortunately, administrative and medical interaction has not become significantly easier with Poland joining the Schengen area in 2007 and, subsequently, initial international contracts regarding, among other things, emergency medicine being negotiated and signed thereafter. Three different interdependent areas of cooperation within the project deal with key aspects of an improved and eventually integrated cooperation. An accepted clarification of administrative and legal foundations - or the lack and thus the need thereof - needs to be defined. Specialized language and simulation-based education and practice sessions employing modern technology throughout will be introduced to the entire region. Finally, the pre-existing and developing acceptance and sustainability aspects of personnel involved in the aforementioned actions and stakeholders on both sides of the border will be evaluated. In essence, the project focuses on a multimodal improvement of professional cooperation of key providers of emergency medicine services in the Euroregion Pomerania. Thereby, it aims to improve infrastructure; interpersonal and professional skills of involved personnel, administrative, and cultural relations; and eventually identification of specialized personnel with their workplace and region to secure and retain important medical workforce in an otherwise remote area on both sides of a formerly secluded border.

Trends in diagnostic patterns and mortality in emergency ambulance service patients in 2007-2014: a population-based cohort study from the North Denmark Region

OBJECTIVE

Demand for ambulances is growing. Nevertheless, knowledge is limited regarding diagnoses and outcomes in patients receiving emergency ambulances. This study aims to examine time trends in diagnoses and mortality among patients transported with emergency ambulance to hospital.

DESIGN

Population-based cohort study with linkage of Danish national registries.

SETTING

The North Denmark Region in 2007-2014.

PARTICIPANTS

Cohort of 148 757 patients transported to hospital by ambulance after calling emergency services.

MAIN OUTCOME MEASURES

The number of emergency ambulance service patients, distribution of their age, sex, hospital diagnoses, comorbidity, and 1-day and 30-day mortality were assessed by calendar year. Poisson regression with robust variance estimation was used to estimate both age-and sex-adjusted relative risk of death and prevalence ratios for Charlson Comorbidity Index (CCI) to allow comparison by year, with 2007 as reference year.

RESULTS

The annual number of emergency ambulance service patients increased from 24.3 in 2007 to 40.2 in 2014 per 1000 inhabitants. The proportions of women increased from 43.1% to 46.4% and of patients aged 60+ years from 39.9% to 48.6%, respectively. The proportion of injuries gradually declined, non-specific diagnoses increased, especially the last year. Proportion of patients with high comorbidity (CCI≥3) increased from 6.4% in 2007 to 9.4% in 2014, corresponding to an age- and sex-adjusted prevalence ratio of 1.27 (95% CI 1.16 to 1.39). The 1-day and 30 day mortality decreased from 2.40% to 1.21% and from 5.01% to 4.36%, respectively, from 2007 to 2014, corresponding to age-adjusted and sex-adjusted relative risk of 0.43 (95% CI 0.37 to 0.50) and 0.72 (95% CI 0.66 to 0.79), respectively.

CONCLUSION

During the 8-year period, the incidence of emergency ambulance service patients, the proportion of women, elderly, and non-specific diagnoses increased. The level of comorbidity increased substantially, whereas the 1-day and 30-day mortality decreased.

Predicting Urban Medical Services Demand in China: An Improved Grey Markov Chain Model by Taylor Approximation

The sharp increase of the aging population has raised the pressure on the current limited medical resources in China. To better allocate resources, a more accurate prediction on medical service demand is very urgently needed. This study aims to improve the prediction on medical services demand in China. To achieve this aim, the study combines Taylor Approximation into the Grey Markov Chain model, and develops a new model named Taylor-Markov Chain GM (1,1) (T-MCGM (1,1)). The new model has been tested by adopting the historical data, which includes the medical service on treatment of diabetes, heart disease, and cerebrovascular disease from 1997 to 2015 in China. The model provides a predication on medical service demand of these three types of disease up to 2022. The results reveal an enormous growth of urban medical service demand in the future. The findings provide practical implications for the Health Administrative Department to allocate medical resources, and help hospitals to manage investments on medical facilities.

Diagnosis and mortality in prehospital emergency patients transported to hospital: a population-based and registry-based cohort study

OBJECTIVE

Knowledge about patients after calling for an ambulance is limited to subgroups, such as patients with cardiac arrest, myocardial infarction, trauma and stroke, while population-based studies including all diagnoses are few. We examined the diagnostic pattern and mortality among all patients brought to hospital by ambulance after emergency calls.

DESIGN

Registry-based cohort study.

SETTING AND PARTICIPANTS

We included patients brought to hospital in an ambulance dispatched after emergency calls during 2007-2014 in the North Denmark Region (580 000 inhabitants). We reported hospital diagnosis according to the chapters of the International Classification of Diseases, 10th Edition (ICD-10), and studied death on days 1 and 30 after the call. Cohort characteristics and diagnoses were described, and the Kaplan-Meier method was used to estimate mortality and 95% CIs.

RESULTS

In total, 148 757 patients were included, mean age 52.9 (SD 24.3) years. The most frequent ICD-10 diagnosis chapters were: 'injury and poisoning' (30.0%), and the 2 non-specific diagnosis chapters: 'symptoms and abnormal findings, not elsewhere classified' (17.5%) and 'factors influencing health status and contact with health services' (14.1%), followed by 'diseases of the circulatory system' (10.6%) and 'diseases of the respiratory system' (6.7%). The overall 1-day mortality was 1.8% (CI 1.7% to 1.8%) and 30-day mortality 4.7% (CI 4.6% to 4.8%). 'Diseases of the circulatory system' had the highest 1-day mortality of 7.7% (CI 7.3% to 8.1%) accounting for 1209 deaths. After 30 days, the highest number of deaths were among circulatory diseases (2313), respiratory diseases (1148), 'symptoms and abnormal findings, not elsewhere classified' (1119) and 'injury and poisoning' (741), and 30 days mortality in percentage was 14.7%, 11.6%, 4.3% and 1.7%, respectively.

CONCLUSIONS

Patients' diagnoses from hospital stay after calling 1-1-2 in this population-based study were distributed across all ICD-10 chapters. Mortality varied widely between diagnostic groups. Non-specific diagnoses accounted for one-third of the patients and contributed to mortality in terms of total number of deaths.