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Effect of a Sound Recognition-Based Basic Life Support Training Program on Cardiopulmonary Resuscitation Performance: A Randomized Simulation Study.

Dong Hyun Choi, Jeong Ho Park, Yoon Ha Joo, Ki Hong Kim, Hyunjin Joo, Hyoun-Joong Kong, Kyoung Jun Song, Sang Do Shin

The Journal of emergency medicine · 2025-08-18 · Randomised trial

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Abstract

BACKGROUND: Decentralized self-instruction basic life support (BLS) training is gaining interest. OBJECTIVES: We evaluated the feasibility and effectiveness of Beep-cardiopulmonary resuscitation (CPR), a cost-effective, at-home, self-instruction BLS training program, on CPR performance. METHODS: This randomized noninferiority simulation trial compared CPR performance between Beep-CPR and conventional BLS training in healthy adults. Beep-CPR training comprised a 30-min self-instruction session using a smartphone and low-cost CPR manikin with real-time sound-based feedback. Conventional training involved a 30-min instructor-led group session. CPR performance was assessed by a blinded assessor using a standardized scenario. Primary outcome was mean compression depth. Secondary outcomes included mean compression rate, mean chest compression release velocity (CCRV), and overall BLS performance score. RESULTS: One hundred participants (mean age [standard deviation (SD)]: 41.8 years [14.0], 36% male) were randomized. Beep-CPR training was noninferior to conventional BLS training in compression depth (mean [SD]: 6.1 [0.8] cm vs. 6.0 [0.8] cm; mean difference [95% confidence interval], 0.1 [0.0-0.1] cm; noninferiority p < 0.001). There were no significant differences in the mean (SD) compression rate (111 [14]/min vs. 111 [13]/min), mean CCRV (451 [76] mm/s vs. 444 [76] mm/s), or overall BLS performance score (7.4 [1.1] vs. 7.7 [0.6]). The mean System Usability Score for Beep-CPR was 80.4 (SD: 12.9), indicating "good" usability and user satisfaction. CONCLUSION: Beep-CPR training is feasible for use in real-world CPR training environments and is not inferior to conventional BLS training in terms of CPR performance. This program offers a promising approach to expanding decentralized, at-home BLS education.

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Bystanders · CPR feedback devices

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