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KMID : 0385920120230040455
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Journal of the Korean Society of Emergency Medicine
2012 Volume.23 No. 4 p.455 ~ p.459
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Comparison of the Alternating Rescuer Method between Every Minute and Two Minutes During Continuous Chest Compression in Cardiopulmonary Resuscitation According to the 2010 Guidelines
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Yi Ki-Ho
Park Sang-O
Lee Kyeong-Ryong
Kim Sang-Chul
Kang Tae-Sin
Hong Dae-Young
Baek Kwang-Je
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Abstract
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Purpose: To maintain high quality cardiopulmonary resuscitation (CPR), optimal alternating rescuers is important. Stronger and faster chest compression has recently been emphasized in the 2010 guidelines. Therefore, this study compared and evaluated changes in the quality of chest compression in a 2-min scenario group and a 1-min scenario group.
Methods: Among the 88 participants, two-rescuer pairs were randomly allocated. After the training and a one-day break, participants were asked to perform continuous chest compressions for 2 min on a manikin and to take a one-day break, followed by continuous chest compression for 1 min. In all simulated CPRs, the total number of chest compressions and those with appropriate depth were counted. Chest compression quality index was calculated as the proportion of chest compressions with appropriate depth.
Results: The mean overall chest compression depth was lower in the 2-min scenario group, compared with the 1-min scenario group. In particular, compression rate (p=0.110), abnormal hand position (p=0.181), and chest recoil (p=0.892) showed no significant difference between the two groups. However, the quality index, mean depth (p=0.018) and too shallow compression depth (p=0.020) 1-min scenario was better than that of the 2-min scenario group. The difference in the CPR quality index reached statistical significance.
Conclusion: Switching compressors at an interval of 2 min is reasonable for performance of CPR by a lay-bystander. However, alternating rescuers every 1 min may be an alternative method during continuous chest compression.
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KEYWORD
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Cardiopulmonary resuscitation, Fatigue, Chest compression, Basic cardiac life support
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