Quality of chest compressions during 10 min of single-rescuer basic life support with different compression: ventilation ratios in a manikin model
Quality of chest compressions during 10 min of single-rescuer basic life support with different compression: ventilation ratios in a manikin model
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DOI：
10.1016/j.resuscitation.2007.11.009
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发表时间：
2008-04-01
期刊：
影响因子：
6.5
通讯作者：
Sunde, Kjetil
中科院分区：
文献类型：
--
作者：
Biorshol, Conrad Arnfinn;Soreide, Eldar;Sunde, Kjetil
简介：高质量的基本生命支持（BLS）可改善心脏骤停期间的结局。由于疲劳可能会随着时间的推移而降低BLS的性能，我们希望检查在具有不同按压：通气比（C：V比）的长时间BLS期间，单个救援人员场景中胸部按压的质量。材料和方法：要求专业护理人员进行单个救援人员BLS，C：V比为15：2、30：2和50：2，随机顺序各10分钟。采用配备PC技能报告系统的Laerdal Medical Resusci Anne模拟器进行BLS质量分析。测量胸外按压总次数、按压深度和按压速率，并采用重复测量方差分析（ANOVA）分析C：V比值之间的差异。疲劳分析，胸部按压变量为每2分钟期间进行了分析，并与第一个2分钟期间使用重复测量AN0VA.Results：共50护理人员完成了研究。胸外按压的平均次数从604次显著增加到770次和862次，C：V比分别为15：2、30：2和50：2。与30：2和50：2相比，C：V比为15：2的胸部按压率显著更高，但所有三种比率均高于100/分钟。然而，平均胸外按压深度在不同C：V比之间没有显著变化。胸外按压的次数对于三个C：V比率中的任何一个都没有随时间显著变化。对于30：2和50：2，压迫深度在前2分钟后确实下降，所有三个比率的压迫率也是如此。然而，在整个测试期间，所有这些都高于指南限值。结论：增加C：V比可增加BLS 10 min期间的胸外按压次数。所有三个比率的压迫深度和压迫率均在指南建议范围内。我们发现，在10分钟的BLS中，三种不同的C：V比中的任何一种，胸外按压质量都没有下降到低于指南建议的水平。(C)2007爱思唯尔爱尔兰有限公司保留所有权利。
Introduction: Good quality basic life support (BLS) improves outcome during cardiac arrest. As fatigue may reduce BLS performance over time we wanted to examine the quality of chest compressions in a single-rescuer scenario during prolonged BLS with different compression:ventilation ratios (C:V ratios).Material and methods: Professional paramedics were asked to perform single-rescuer BLS with C:V ratios of 15:2, 30:2 and 50:2 for 10 min each in random order. A Laerdal Medical Resusci Anne Simulator with PC Skillreporting System was used for BLS quality analysis. Total number of chest compressions, compression depth and compression rate were measured and the differences between the C:V ratios were analysed with repeated measures ANOVA. For analysis of fatigue, chest compression variables for each 2-min period were analysed and compared with the first 2-min period using repeated measures ANOVA.Results: Altogether 50 paramedics completed the study. The mean number of chest compressions increased significantly from 604 to 770 and 862 with C:V ratios of 15:2, 30:2 and 50:2, respectively. Chest compression rate was significantly higher with C:V ratio of 15:2 compared to 30:2 and 50:2 but was above 100 per minute for all three ratios. However, the mean chest compression depth did not change significantly between the different C:V ratios. The number of chest compressions did not change significantly with time for any of the three C:V ratios. Compression depth did decline after the first 2-min period for 30:2 and 50:2 as did compression rate for all three ratios. However all were above the guideline limits for the entire test period. Conclusion: Increasing the C:V ratio increases the number of chest compressions during 10 min of BLS. Compression depth and compression rate were within guideline recommendations for all three ratios. We found no decline in chest compression quality below guideline recommendations during 10 min of BLS with any of the three different C:V ratios. (C) 2007 Elsevier Ireland Ltd. All rights reserved.