Li E S, Cheung P-Y, O'Reilly M, Aziz K, Schmölzer G M
1] Faculty of Science, McGill University, Montreal, QC, Canada [2] Neonatal Research Unit, Royal Alexandra Hospital, Edmonton, AB, Canada [3] Division of Neonatology, Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.
1] Neonatal Research Unit, Royal Alexandra Hospital, Edmonton, AB, Canada [2] Division of Neonatology, Department of Pediatrics, University of Alberta, Edmonton, AB, Canada.
J Perinatol. 2015 Feb;35(2):142-5. doi: 10.1038/jp.2014.165. Epub 2014 Sep 11.
To assess development of fatigue during chest compressions (CCs) in simulated neonatal cardiopulmonary resuscitation (CPR).
Prospective randomized manikin crossover study. Thirty neonatal healthcare professionals who successfully completed the Neonatal Resuscitation Program performed CPR using (i) 3:1 compression:ventilation (C:V) ratio, (ii) continuous CC with asynchronous ventilation (CCaV) at a rate of 90 CC per min and (iii) CCaV at 120 CC per min for a duration of 10 min on a neonatal manikin. Changes in peak pressure (a surrogate of fatigue) and CC rate were continuously recorded and fatigue among groups was compared. Participants were blinded to pressure tracings and asked to rate their level of comfort and fatigue for each CPR trial.
Compared with baseline, a significant decrease in peak pressure was observed after 72, 96 and 156 s in group CCaV-120, CCaV-90 and 3:1 C:V, respectively. CC depth decreased by 50% within the first 3 min during CCaV-120, 30% during CCaV-90 and 20% during 3:1 C:V. Moreover, 3:1 C:V and CCaV were similarly preferred by healthcare professionals.
Similarly, 3:1 C:V and CCaV CPR were also fatiguing. We recommend that rescuers should switch after every second cycle of heart rate assessment during neonatal CPR.
评估模拟新生儿心肺复苏(CPR)过程中胸部按压(CCs)时疲劳的发展情况。
前瞻性随机人体模型交叉研究。30名成功完成新生儿复苏项目的新生儿医护专业人员使用(i)3:1按压与通气(C:V)比例、(ii)每分钟90次CC的连续CC与异步通气(CCaV)以及(iii)每分钟120次CC的CCaV在新生儿人体模型上进行10分钟的CPR。持续记录峰值压力(疲劳的替代指标)和CC速率的变化,并比较各组之间的疲劳情况。参与者对压力曲线不知情,并被要求对每次CPR试验的舒适度和疲劳程度进行评分。
与基线相比,CCaV - 120组、CCaV - 90组和3:1 C:V组分别在72秒、96秒和156秒后观察到峰值压力显著下降。在CCaV - 120期间的前3分钟内CC深度下降了50%,在CCaV - 90期间下降了30%,在3:1 C:V期间下降了20%。此外,医护专业人员对3:1 C:V和CCaV的偏好相似。
同样,3:1 C:V和CCaV心肺复苏也会导致疲劳。我们建议在新生儿心肺复苏期间,救援人员应在每两个心率评估周期后进行轮换。