Whyte S D, Wyllie J P
Neonatal Intensive Care Unit, South Cleveland Hospital, Middlesbrough, UK.
Resuscitation. 1999 Jul;41(2):153-7. doi: 10.1016/s0300-9572(99)00056-8.
Current European Resuscitation Council (ERC) guidelines for paediatric basic life support advocate delivery of 20 cycles/min at a compression rate of 100/min and a compression:ventilation ratio of 5:1 (Resuscitation 1997;34:115-27; Resuscitation 1998;37(2):97-100). We have evaluated whether cardiopulmonary resuscitation (CPR) can be delivered at this rate by hospital providers. We recruited 24 rescuers, all of whom had successfully completed a training course in paediatric life support. Each was asked to perform single rescuer CPR on a Resusci-Junior mannequin (Laerdal, Kent, UK) for 5 min, following the current ERC guidelines. Compressions and ventilations were recorded in real time by inductance plethysmography. Maintenance of the 5:1 ratio was ensured by investigator observation. Cycles of CPR in the first and fifth minutes of resuscitation were counted. The average duration of compression, ventilation and 'transfer time' spent between these two activities was calculated as a percentage of the average duration of a cycle of CPR. All 24 rescuers completed 5 min of resuscitation. Twenty-three of 24 were unable to deliver 20 cycles of CPR in either the first minute (range 8-27; median 11; interquartile range (IQR) 10-13.75) or in the fifth minute (8-26; 11.5; 10-13.75). The median (IQR) duration of a cycle of CPR was 5 s in the first and fifth minutes. Transfer time comprised 30% of total cycle time. In this study, over 95% of single rescuers trained in paediatric life support were unable to deliver 20 cycles of CPR/min. The guidelines make no allowance for time spent moving between compression and ventilation activity. Future consensus statements should take account of this transfer time. Any changes in recommendations should obviously be prospectively audited with Utstein-style reporting and studies of practicability.
欧洲复苏委员会(ERC)现行的儿科基本生命支持指南提倡以每分钟100次的按压速率和5:1的按压与通气比进行每分钟20个周期的操作(《复苏》,1997年;第34卷:第115 - 27页;《复苏》,1998年;第37卷(第2期):第97 - 100页)。我们评估了医院急救人员是否能够以该速率进行心肺复苏(CPR)。我们招募了24名急救人员,他们均已成功完成儿科生命支持培训课程。要求每人按照现行的ERC指南,在一个儿童复苏模拟人(Resusci - Junior,英国肯特郡的Laerdal公司生产)上进行单人CPR操作5分钟。通过电感体积描记法实时记录按压和通气情况。由研究者观察以确保维持5:1的比例。计算复苏第1分钟和第5分钟CPR的周期数。计算按压、通气以及这两项操作之间“转换时间”的平均持续时间占CPR一个周期平均持续时间的百分比。所有24名急救人员均完成了5分钟的复苏操作。24人中的23人在第1分钟(范围8 - 27;中位数11;四分位间距(IQR)10 - 13.75)或第5分钟(8 - 26;11.5;10 - 13.75)均无法完成20个CPR周期。CPR一个周期的中位数(IQR)持续时间在第1分钟和第5分钟均为5秒。转换时间占总周期时间的30%。在本研究中,接受过儿科生命支持培训的单人急救人员中超过95%无法达到每分钟20个CPR周期。该指南未考虑按压和通气操作之间所花费的时间。未来的共识声明应考虑到这一转换时间。建议的任何更改显然都应采用Utstein式报告和实用性研究进行前瞻性审核。