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KMID : 0385920090200050510
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Journal of the Korean Society of Emergency Medicine
2009 Volume.20 No. 5 p.510 ~ p.514
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Comparison of Quality of Cardiopulmonary Resuscitation in Manikins with a Change in the Compression to Ventilation Ratio from 30:2 to 15:1
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Kim Yoon-Seong
Cho Jun-Hwi
Shin Myoung-Cheol
Choi Hyun-Young
Moon Joong-Bum
Park Chan-Woo
Seo Jeong-Yeol
Ahn Moo-Eob
Cheon Seung-Hwan
Lee Jae-Sung
Lee Bong-Ki
Cho Byung-Ryul
Kim Yong-Hoon
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Abstract
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Purpose: To minimize an interruption in chest compression, reduce the hands-off time, the American Heart Association has recommended changing the ratio of chest compression to ventilation ratio to 30:2. However, current studies have shown that the hands-off time was >10 seconds with that method. For this reason, we reasoned that a chest compression to ventilation ratio of 15:1 would be a more suitable way to reduce hands-off time because this ratio will not change the total compression and ventilation count.
Methods: The subjects were asked to perform CPR for 5 cycles with a compression to ventilation ratio of 30:2. The subjects rested for 5 minutes, then performed CPR with a compression to ventilation of 15:1. The skill performance was measured and analyzed using a statistical program.
Results: In the group which performed CPR with a chest compression to ventilation ratio of 30:2, the average number of compressions per minute was 76±9, while at a chest compression to ventilation ratio of 15:1, the average number of compressions per minute was 68±9. Between the compression to ventilation ratios of 30:2 and 15:1, the count gap was 8.3±3.2. When CPR was performed at a chest compression to ventilation ratio of 30:2, the average hands-off time was 9.3±1.9. When CPR was performed at a chest compression to ventilation ratio of 15:1, the average hands-off time was 6.7±1.3. Between chest compression to ventilation ratios of 30:2 and 15:1, the time gap of the average hands-off time was 2.7±1.2 seconds.
Conclusion: When the chest compression to ventilation ratio was 15:1, the hands-off time was significantly reduced, but the compressions per minute were also reduced.
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KEYWORD
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Cardiopulmonary resuscitation, Hands-off time, Compression to ventilation ratio
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