Acute cardiac care & resuscitation
The association of the post-resuscitation on-scene interval and patient outcomes after out-of-hospital cardiac arrest
Authors' conclusion
Among resuscitated OHCAs, increased post-resuscitation on-scene time was not associated with improved neurological outcomes, but was associated with improved survival to hospital discharge and decreased intra-transport re-arrest.
Study context
- Population
- Consecutive adult Emergency Medical Services (EMS)-treated out-of-hospital cardiac arrest (OHCAs) with on-scene return of spontaneous circulation (ROSC) sustained to scene departure, British Columbia Cardiac Arrest registry, January 2019–June 2021
- Participants
- 1,653 participants
- Exposure
- Post-resuscitation on-scene interval quartiles
- Outcome
- Favourable neurological outcome (Cerebral Performance Category ≤ 2)
- Follow-up
- Hospital discharge
Methodological detailsregistry-based, adjusted logistic regression
- Registry-based
- Adjusted logistic regression
Main finding
As reported in the abstract
Favourable neurological outcome
Adjusted odds ratio (95% CI)
Q2 vs Q1
1.19(0.72–1.98)
Q3 vs Q1
1.10(0.67–1.81)
Q4 vs Q1
1.54(0.93–2.56)
- Overall favourable neurological outcome
- 523 (32%)
- Median post-resuscitation on-scene interval
- 18.8 minutes (IQR:13.0-25.5)
Observational data: associations, not effects.
Secondary outcomes
| Outcome | AOR (95% CI) | |
|---|---|---|
| Hospital-discharge survivalQ4 vs Q1 | 1.73 (1.05–2.85) | |
| Intra-transport re-arrestQ3 vs Q1 | 0.40 (0.22–0.72) | |
| Intra-transport re-arrestQ4 vs Q1 | 0.44 (0.24–0.81) | |
| 0.20.5125Adjusted odds ratio (log scale) |
- Hospital-discharge survival — Overall survival to hospital discharge
- 611 (37%)
Original publication
The association of the post-resuscitation on-scene interval and patient outcomes after out-of-hospital cardiac arrest. Resuscitation. Published 25 February 2023. doi:10.
Summarised from the published abstract; every number is checked against it