Objectives: In-hospital cardiac arrests are common and associated with high mortality. Smartphone applications offer quick access to algorithms and timers but often lack real-time guidance. This study assesses the impact of the Code Blue Leader application on the performance of providers leading cardiac arrest simulations.
Methods: This open-label randomized controlled trial included Advanced Cardiac Life Support (ACLS)-trained medical doctors (MD) and registered nurses (RN). Participants were randomized to lead the same ACLS simulation with or without the app. The primary outcome, "performance score," was assessed by a trained rater using a validated ACLS scoring system. Secondary outcomes included percentage of critical actions performed, number of incorrect actions, and chest compression fraction (percentage of time spent performing chest compressions). A sample size of 30 participants was calculated to detect a difference of 20% at the 0.05 alpha level with 90% power.
Results: Fifteen MDs and 15 RNs underwent stratified randomization. The median (interquartile range) performance score in the app group was 95.3% (93.0%-100.0%) compared to 81.4% (60.5%-88.4%) in the control group, demonstrating an effect size of r = 0.69 ( Z = -3.78, r = 0.69, p = 0.0002). The percentage of critical actions performed in the app group was 100% (96.2%-100.0%) compared to 85.0% (74.1%-92.4%) in the control group. The number of incorrect actions performed in the app group was 1 (1) compared to 4 (3-5) in the control group. Chest compression fraction in the app group was 75.5% (73.0%-84.0%) compared to 75.0% (72.0%-85.0%) in the control group.
Conclusions: The Code Blue Leader smartphone app significantly improved the performance of ACLS-trained providers in cardiac arrest simulations.
Competing Interests: This trial was not funded or sponsored by any company or institution. No grants or other methods of financial support were utilized. The smartphone application under investigation in this trial was created by the principal investigator (SB) of this study. It is owned by SB and TJ and is currently protected under a provisional patent. As such, SB and TJ were not present in the simulation laboratory during any participant involvement and did not contribute to any data collection or participant assessment. This conflict of interest was disclosed in the application for ethical review. The completion of this trial contributed to SB meeting requirements to complete his master's degree at Harvard University. The other authors declare no conflicts of interest.
(© 2023 The Authors. AEM Education and Training published by Wiley Periodicals LLC on behalf of Society for Academic Emergency Medicine.)