![]() However, continuously maintaining high-quality chest compressions causes accumulated fatigue, which then deteriorates the quality of compressions therefore, the guidelines recommend switching with another rescuer, if possible, every 2 minutes. The 2015 Guidelines for CPR recommend a compression depth of 5 to 6 cm at a rate of 100 to 120 compressions/min. High-quality chest compressions during cardiopulmonary resuscitation (CPR) are crucial to improve the survival rate of cardiac arrest patients. Adjusting the rest interval may help maintain overall CPR quality in special situations or where layperson rescuers are involved. Well-trained providers were able to maintain high-quality CPR despite reducing rest intervals. Physiological and hemodynamic parameters showed no significant differences between the groups. However, all 3 groups maintained the recommended rate and chest compression depth for all 5 cycles. The variation of the average chest compression depth across the 5 cycles showed significant differences between the 3 groups: from cycle 1 to 2: 1.2 (3.1) mm, –0.8 (2.0) mm, and –2.0 (3.0) mm in the 2 minutes, 1 minute 45 seconds, and 1 minute 30 seconds groups, respectively ( P <. ![]() Of the 90 volunteers, 79 well-trained providers were finally included. CPR quality, physiological variations, and hemodynamic variations were measured for each cycle and compared across the groups. ![]() Each participant performed 5 cycles of chest compression only CPR (2 min/cycle) with different resting intervals according to grouping. They were randomly divided into 3 groups: 2 minutes, 1 minute 45 seconds, and 1 minute 30 seconds rest groups. The study enrolled 90 volunteers from the paramedic students of our institution. This study aimed to examine the effects of reducing resting intervals on CPR performance, physiological parameters, and hemodynamic parameters during prolonged CPR in well-trained providers. ![]() Well-trained or professional rescuers can maintain high-quality CPR for longer than laypeople. Ĭardiopulmonary resuscitation (CPR) performance depends on individual ability and training. The work cannot be used commercially without permission from the journal. This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial License 4.0 (CCBY-NC), where it is permissible to download, share, remix, transform, and buildup the work provided it is properly cited. The authors have no conflicts of interest to disclose. The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request. Comparison of the effects of shortening rest intervals on the quality of cardiopulmonary resuscitation, physiological parameters, and hemodynamic parameters in well-trained rescuers: randomized simulation study. How to cite this article: Kim DH, Lee SM, Kim GM, Lee KW, Ko SH, Oh YJ, Seo YW, Lee SH, Jang TC. ∗Correspondence: Tae Chang Jang, Department of Emergency Medicine, School of Medicine, Daegu Catholic University, (42472) 33 Durygongwon-ro 17-gil Nam-gu, Daegu, Republic of Korea (e-mail: ).Ībbreviations: AHA = American Heart Association, COCPR = chest compression only cardiopulmonary resuscitation, CPR = cardiopulmonary resuscitation, HR = heart rate. ADepartment of Emergency Medical Technology, Gyeongbuk Provincial College, Yecheon-gun, Gyeongsangbuk-doīDepartment of Emergency Medicine, School of Medicine, Daegu Catholic University, Daegu, Republic of Korea.
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