Acute cardiac care & 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 that were witnessed by citizens, Japanindividuals with OHCAs witnessed by citizens, 20,410 male (61.1%), median (IQR) age 80 (70, 87) years
- Participants
- 33,426 patients
- Exposure
- Automated external defibrillator (AED) use by each bystander witness type
- Outcome
- AED use, defined as AED pad application, by each bystander witness type
Methodological detailsnationwide population-based registry (All-Japan Utstein Registry)
- Nationwide population-based registry (All-Japan Utstein Registry)
Main finding
As reported in the abstract
- AED use in all OHCAs witnessed by citizens
- 12.6%
Observational data: associations, not effects.
Further findings
Factors associated with AED use, OHCAs witnessed by citizens in public (exploratory multivariable logistic regression)
- Female sex, weekends, and nighttime were associated with decreased AED use
- Exploratory analysis
Factors associated with AED use, regardless of witness type (exploratory multivariable logistic regression)
- Dispatcher instructions and delays in response time were associated with increased AED use
- Exploratory analysis
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.
Summarised from the published abstract; every number is checked against it