Comparison of the operation time of two fully automatic external defibrillator models: a randomized controlled trial

Objective: This study aimed to compare different fully automatic external defibrillators (FAEDs) among university students and examine whether they could deliver an electroshock quickly and correctly.Furthermore, we aimed to identify potential issues that could arise when disseminating FAEDs to the public.Methods: A randomized controlled trial was conducted among university students using two commercially available FAEDs.The primary outcome measure was the time from FAED arrival to defibrillation (seconds).We used multiple linear regression analysis to estimate the partial regression coefficient and 95% confidence interval (CI) and evaluate the association between the FAED models and outcomes.Results: Regarding the primary outcome, the mean AED arrival-defibrillation interval for Kohden was 68.33±12.18seconds, and for Stryker, it was 75.97±12.64seconds.The multiple regression analysis indicated that Kohden had a significantly shorter time to defibrillation compared to Stryker (B, -8.67; 95% CI, -14.93 to -2.41). Conclusion:The study found that the two FAEDs differed by 8.67 seconds in the time from AED arrival to defibrillation.However, the subjective workload was not significantly high, suggesting that the use of automated external defibrillators was relatively straightforward.