Does heart rate variability predict and improve performance in pediatric CPR?-a simulation study.
BMC Emergency Medicine · 2025-04-05 · Randomised trial
Abstract
INTRODUCTION: Out-of-hospital pediatric resuscitation is a severe medical condition with a low survival rate. Providing pediatric resuscitation is a significant stressor for medical teams that may impair performance. The vagal nerve is a crucial moderator of stress responses, and its activation (indexed by heart rate variability, HRV) has been shown to predict and improve performance in various settings. However, there is limited data about vagal activation and performance in medical settings. METHODS: In a randomized simulation Study, paramedic students and medics were assigned to 3 min of slow-paced breathing or watching an educational 3-minute video. The participant received a scenario describing an unconscious baby without a pulse and with no breathing. The participants then performed CPR (cardiopulmonary resuscitation) on a manikin. During the scenario, every 2 min, the participant was asked a question that tested the recall of information from the scenario, and CPR performance was continuously monitored. HRV and subjective stress were taken 3 times. RESULTS: Higher baseline HRV predicted better CPR performance. No difference in CPR performance between the groups was found, and explanations for these results will be discussed. CONCLUSION: HRV may be used to predict CPR performance. Short-term slow-paced breathing does not improve CPR performance. Future studies should investigate the effect of long-term stress reduction interventions on CPR performance.
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