Observational studyBMJ open2025
Association between time of day and outcomes after out-of-hospital cardiac arrest in Poland: an analysis of the EuReCa registry.
Observational study in BMJ open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03130088 (European Registry of Cardiac Arrest - Study Two), which is not on this map. Cited by 1 paper.
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.
European Registry of Cardiac Arrest - Study Two (EuReCa TWO) An International, Prospective, Multi-centre, Three-month Survey of Epidemiology, Treatment and Outcome of Patients Suffering an Out-of-hospital Cardiac Arrest in Europe
Who cites it
1 citing paper in PubMed.
- Advanced Prehospital Airway Management: Analyzing Success Rates and Predictors of King Laryngeal Tube Use.Healthcare (Basel, Switzerland) · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveOut-of-hospital cardiac arrest (OHCA) has low survival rates with worse outcomes at night due to delayed emergency medical services (EMS) response, resource limitations and workforce fatigue. Since randomised trials are unfeasible, all-comers registries provide essential data to bridge evidence gaps and improve EMS protocols.
designRetrospective observational study using propensity score matching.
settingNational EMS registry and death registry data from Poland, cases from September to November 2022.
participantsOf 2388 eligible patients, cases were grouped by time of cardiac arrest (on-hours: 7:00-18:59; off-hours: 7:00-18:59 AM) and matched 1:1 using propensity scores, yielding 1194 pairs. PRIMARY AND SECONDARY OUTCOME MEASURES: Primary: return of spontaneous circulation (ROSC) and 30-day survival.Secondary: EMS response time.
resultsOur findings revealed significant disparities in OHCA outcomes between day and night shifts. ROSC rates were notably lower at night (20.9% vs 34.8%; p=0.01); however, no difference in 30-day survival was observed (8.3% vs 8.1%; p=0.94). Furthermore, EMS response times were significantly longer during nighttime hours (median and IQR): 12.4 (7.4-14.6) versus 11.2 (6.2-13.5) (minutes); p=0.01.
conclusionsPatients with OHCA during off-hours experienced longer EMS response times and significantly lower rates of ROSC as compared with daytime hours. No difference in 30-day survival was observed between groups. Potential contributors include reduced staffing, fatigue and logistical delays. System-level changes in EMS scheduling and workforce planning might help to reduce time-of-day-related disparities in OHCA outcomes. TRIAL REGISTRATION NUMBER: Clinical Trials ID: NCT03130088; Post results.
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Registered trials
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