利用模拟人研究操作者疲劳和心肺复苏质量相关性

Relationship between rescuer fatigue and quality of chest compressions:a manikin study in teenagers

目的由于操作者的疲劳,胸外按压质量会随着时间延长而下降。本研究利用模拟人研究操作者主观、客观疲劳和胸外按压之间的关系。方法130名年龄16~18岁的志愿者受邀请参与本次研究。在接受基本生命支持的培训和测试通过后,所有志愿者被要求在模拟人上实行6 min的单纯胸外按压。按压频率和深度用于评估按压质量,而志愿者的心率、血乳酸和主观疲劳程度作为评价操作者疲劳情况。结果120名志愿者参与本次研究。随着按压时间的增加,所有志愿者的按压质量明显下降而主观疲劳程度明显上升。统计学分析主观疲劳程度与按压深度呈负相关(P<0.01),而与志愿者心率和血乳酸则呈正相关(P<0.01)。结论随着按压时间的增长,操作者的按压质量下降而疲劳则增加。主观疲劳程度与按压深度呈负相关,而与操作者心率和血乳酸则呈正相关。

Objective Due to fatigue of rescuer,quality of chest compressions(CCs)declines over time.In the present study,we investigated the relationship among the quality of CCs,objective and subjective fatigue in a manikin study of teenagers.Methods Total 130 volunteers aged at 16⁃18 yrs were recruited to participate in this study.After thetraining course and theoretical examination of basic life support,6⁃min of compression⁃only CPR performance was assessed.The quality of CCs including rate and depth of compression was analyzed.The rescuer fatigue was evaluated by the changes of heart rate(HR)and blood lactate(LAC),and rating of perceived exertion(PRE).Results Total 120 participants completed this study.The decreases in quality of CCs and increases of PRE were observed over time in all participants.Spearman analysis confirmed that PRE was closely negatively with depth of CCs(P<0.01).Significantly positively relationship were found among PRE and changes in HR and LAC(P<0.01).Conclusion The quality of CCs declines and fatigue of rescuers increases overtime.PRE significantly negatively correlated with depth of CCs.Closely positive relationship were among PRE,HR and LAC.