Observational studyJournal of the American Heart Association2020
Shortening Ambulance Response Time Increases Survival in Out-of-Hospital Cardiac Arrest.
Observational study in Journal of the American Heart Association, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
65 citing papers in PubMed, 1 synthesis or guideline pooled it, 144 citations in OpenAlex.
- Cardiorespiratory Sensors and Their Implications for Out-of-Hospital Cardiac Arrest Detection: A Systematic Review.Annals of biomedical engineering · 2024Pooled it
- Emergency medical service organizational structure and prehospital outcomes after out-of-hospital cardiac arrest in China: Insights from the BASIC-OHCA.Resuscitation plus · 2026Article
- Correlation Between EMS Agency Rates of Survival to Hospital Admission and Hospital Survival Outcomes for Cardiac Arrest.Circulation · 2026Article
- Association of Daily Snow Depth with Emergency Medical Services Response and Survival After Out-of-Hospital Cardiac Arrest: A Prefectural Cohort Study in Northern Japan.Journal of clinical medicine · 2026Article
- Mapping the impacts of climate change on prehospital emergency medical services: protocol for a scoping review.BMJ open · 2026Article
- Article
- Impact of emergency medical services volume on outcomes and management in prehospital traumatic cardiac arrest: a retrospective cohort study.Scandinavian journal of trauma, resuscitation and emergency medicine · 2026Article
- Physician-staffed Ambulance Deployment: Comparative Response Time Analysis from a Slovak Pilot Project.The western journal of emergency medicine · 2026Article
- Logistic regression and simulation modelling to evaluate survival effects of EMS response time in suspected cardiac arrest.BMC emergency medicine · 2026Article
- Out-of-Hospital Cardiac Arrest Survival at Nighttime: A Nationwide Cohort Study.JAMA network open · 2026Article
- Association Between Urban-Rural Geographical Location and 30-Day Survival After Out-of-Hospital Cardiac Arrest.Journal of the American College of Emergency Physicians open · 2026Article
- Impact of Snowfall on Ambulance Response Times to Out-of-Hospital Cardiac Arrest - Nationally-Representative Population-Based Registry Analysis, 2009-2019.Circulation reports · 2026Article
- Regional disparities and temporal trends in pre-hospital management of out-of-hospital cardiac arrest in Thailand: a multi-center retrospective cohort study (2017-2023).Resuscitation plus · 2026Article
- Modeling IN out-of-hospital emergency medical services-a scoping review of approaches and applications.Frontiers in public health · 2026Article
- Impact of heavy rainfall on ambulance response time in Japan.Scientific reports · 2025Article
- Does Delayed Response Due to Busy Ambulances Impact Risk of Death and Hospital Service Use?: A Cohort Study of 240,000 Medical Emergencies.Epidemiology (Cambridge, Mass.) · 2025Article
- Urban-rural disparities in out-of-hospital cardiac arrest outcomes: a nationwide Hungarian study.Resuscitation plus · 2025Article
- Comparing the incomparable: Population densities and first responder groups through alternate statistics.Resuscitation plus · 2025Review
- [Arrival times of emergency services in out-of-hospital cardiac arrest-Survival-relevant differences between federal states in Germany].Die Anaesthesiologie · 2025Article
- Factors for good neurological outcome in adult OHCA with initial shockable rhythm: a retrospective multicenter cohort study from the German Resuscitation Registry.Resuscitation plus · 2025Article
5 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background The ambulance response time in out-of-hospital cardiac arrest (OHCA) has doubled over the past 30 years in Sweden. At the same time, the chances of surviving an OHCA have increased substantially. A correct understanding of the effect of ambulance response time on the outcome after OHCA is fundamental for further advancement in cardiac arrest care. Methods and Results We used data from the SRCR (Swedish Registry of Cardiopulmonary Resuscitation) to determine the effect of ambulance response time on 30-day survival after OHCA. We included 20 420 cases of OHCA occurring in Sweden between 2008 and 2017. Survival to 30 days was our primary outcome. Stratification and multiple logistic regression were used to control for confounding variables. In a model adjusted for age, sex, calendar year, and place of collapse, survival to 30 days is presented for 4 different groups of emergency medical services (EMS)-crew response time: 0 to 6 minutes, 7 to 9 minutes, 10 to 15 minutes, and >15 minutes. Survival to 30 days after a witnessed OHCA decreased as ambulance response time increased. For EMS response times of >10 minutes, the overall survival among those receiving cardiopulmonary resuscitation before EMS arrival was slightly higher than survival for the sub-group of patients treated with compressions-only cardiopulmonary resuscitation. Conclusions Survival to 30 days after a witnessed OHCA decreases as ambulance response times increase. This correlation was seen independently of initial rhythm and whether cardiopulmonary resuscitation was performed before EMS-crew arrival. Shortening EMS response times is likely to be a fast and effective way of increasing survival in OHCA.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.