Cardiac arrest & resuscitation
Factors associated with automated external defibrillator use in out-of-hospital cardiac arrest by type of lay rescuers: a Japanese nationwide, population-based descriptive study
Authors' conclusion
We elucidated the current patterns of AED use in Japan by using a nationwide population-based OHCA registry. We found that patient characteristics and various situational and systemic factors can influence AED use by citizens.
Study context
- Population
- Patients with out-of-hospital cardiac arrest (OHCA) due to nonexternal causes witnessed by citizens, Japan61.1% male
- Participants
- 33,426 patients
- Exposure
- Automated external defibrillator (AED) use by bystander witness type
- Outcome
- AED use (AED pad application) by bystander witness type
Methodological detailsregistry-based (All-Japan Utstein Registry), exploratory multivariable logistic regression
- Registry-based (All-Japan Utstein Registry)
- Exploratory multivariable logistic regression
Main finding
As reported in the abstract
AED use
- AED use in all citizen-witnessed OHCAs
- 12.6%
Observational data: associations, not effects.
Further findings
Factors associated with AED use, citizens in public (exploratory multivariable analysis)
- Female sex, weekends and nighttime associated with decreased AED use
Factors associated with AED use, all witness types (exploratory multivariable analysis)
- Dispatcher instructions and delays in response time associated with increased AED use
Original publication
Factors associated with automated external defibrillator use in out-of-hospital cardiac arrest by type of lay rescuers: a Japanese nationwide, population-based descriptive study. Resuscitation. Published 21 June 2025. doi:10.
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