Acute cardiac care & resuscitationCohort study
Dispatch of Volunteer Responders to Out-of-Hospital Cardiac Arrests
- Retrospective cohort study
- inverse probability treatment weighting
- multiple imputation
- 5 European sites
- ESCAPE-NET collaborative research network
Authors' conclusion
Activation of a volunteer response system in cases of OHCA was associated with a higher chance of bystander CPR, bystander defibrillation, and 30-day survival vs no system activation.
Study context
- Population
- OHCA cases, 2015–2019, 5 European sites with volunteer responder systems
- Participants
- 9,553 cases
- Exposure
- Volunteer responder system activation vs no system activation
- System activationn = 4,696
- No system activationn = 4,857reference
- Outcome
- Bystander CPR, bystander defibrillation and 30-day survival
Main finding
As reported in the abstract
Bystander cardiopulmonary resuscitation (CPR), pooled RR, system activation vs no system activation
1.30 (95% CI: 1.15-1.47)
Bystander defibrillation, pooled RR, system activation vs no system activation
1.89 (95% CI: 1.36-2.63)
30-day survival, pooled RR, system activation vs no system activation
1.22 (95% CI: 1.07-1.39)
Observational data: associations, not effects.
Original publication
Dispatch of Volunteer Responders to Out-of-Hospital Cardiac Arrests. J Am Coll Cardiol. Published 18 July 2023. doi:10.1016/j.jacc.2023.05.017
Summarised from the published abstract; every number is checked against it