Cardiac arrest & resuscitation

Survival After Out-of-Hospital Cardiac Arrest Before and After Legislation for Bystander Cardiopulmonary Resuscitation (CPR)

JAMA Netw OpenPublished Observational cohort study

Authors' conclusion

These findings suggest that implementation of the Emergency Medical Aid Act in China was associated with increased rates of CPR and public AED use and improved survival of patients with OHCA.

Study context

Population
Patients with bystander-witnessed Out-of-hospital Cardiac Arrest (OHCA), Shenzhen, China, 2010–2022
Participants
13,751 patients
Exposure
Postlegislation vs prelegislation period
  • Postlegislationn = 5,893
  • Prelegislationn = 7,858reference
Outcome
Rates of bystander-initiated CPR and use of AEDs
Methodological detailsinterrupted time-series analysis, prospective city registry
  • Interrupted time-series analysis
  • Prospective city registry

Main finding

As reported in the abstract

Bystander-initiated CPR and AED use

Bystander-initiated CPR, before vs after legislation

320 patients [4.10%] vs 1103 patients [18.73%]

Automated external defibrillator (AED) use, before vs after legislation

214 patients [4.12%] vs 182 patients [5.29%]

Observational data: associations, not effects.

Secondary outcomes

Prehospital ROSC

Survival to arrival at hospital

Survival at discharge

Prehospital return of spontaneous circulation (ROSC)

Significantly increased postlegislation

Survival to arrival at hospital

Significantly increased postlegislation

Survival at discharge

Significantly increased postlegislation

Original publication

Survival After Out-of-Hospital Cardiac Arrest Before and After Legislation for Bystander CPR. JAMA Netw Open. Published 1 April 2024. doi:10.1001/jamanetworkopen.2024.7909

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