Hackman B B, Kellermann A L, Everitt P, Carpenter L
Department of Internal Medicine, University of Tennessee, Memphis, USA.
Ann Emerg Med. 1995 Jul;26(1):25-30. doi: 10.1016/s0196-0644(95)70233-4.
To compare the quality of CPR provided by firefighters performing three-rescuer CPR with that achieved by firefighters trained to provide standard two-rescuer CPR.
Eight months after training a large number of firefighters to perform three-rescuer CPR, we used a quasi-experimental design to compare the performance of a randomly selected subset of these companies to that achieved by a control group of engine companies that received refresher training in standard two-rescuer CPR. Both groups used bag-valve masks to provide rescue ventilations. Testing was conducted on a no-notice basis with a recording mannequin. Key actions were scored by an experienced observer using explicit pass-fail criteria. Mannequin-generated strip charts were used to calculate the rate and depth of chest compressions and the ventilatory rate, volume, and minute ventilation in a blinded manner.
Fire stations of the Memphis Fire Department. The department is the sole provider of first-responder emergency care to the citizens of Memphis, Tennessee (population, 610,000).
Three-rescuer teams delivered a mean minute ventilation substantially greater than that produced by two-rescuer teams (7.7 +/- 5.3 L versus 4.9 +/- 4.2 L, P < .001). Intergroup differences in the mean depth of chest compressions were less marked, but they were still significant (17.2 +/- 8.3 mm of recorder-needle deflection versus 13.7 +/- 7.0 mm, P < .001).
Three rescuers can produce better CPR than two when a bag-valve-mask device is used. The technique is easily learned and readily retained.
比较实施三人徒手心肺复苏术（CPR）的消防员所提供的心肺复苏质量与接受标准双人徒手心肺复苏术培训的消防员所达到的质量。
在对大量消防员进行三人徒手心肺复苏术培训八个月后，我们采用准实验设计，将这些公司中随机选择的一个子集的表现与接受标准双人徒手心肺复苏术进修培训的消防车公司对照组的表现进行比较。两组均使用袋阀面罩进行人工呼吸。测试在未提前通知的情况下使用记录人体模型进行。关键操作由经验丰富的观察员根据明确的通过/失败标准进行评分。使用人体模型生成的带状图表以盲法计算胸外按压的速率和深度以及通气速率、潮气量和分钟通气量。
孟菲斯消防局的消防站。该部门是田纳西州孟菲斯市（人口61万）公民的唯一急救护理提供者。
三人小组的平均分钟通气量显著高于双人小组（7.7±5.3升对4.9±4.2升，P<.001）。胸外按压平均深度的组间差异不太明显，但仍具有显著性（记录针偏转17.2±8.3毫米对13.7±7.0毫米，P<.001）。
使用袋阀面罩装置时，三人进行心肺复苏比两人效果更好。该技术易于学习且容易掌握。
