Hoehne Sabrina N, Cary Julie A, Bailey Lindsay N, Davidow Elizabeth B, Martin Linda G, DeJong Trey L
Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA.
Center for Interdisciplinary Statistical Education and Research, Washington State University, Pullman, Washington, USA.
J Vet Emerg Crit Care (San Antonio). 2025 Jan-Feb;35(1):9-18. doi: 10.1111/vec.13445. Epub 2025 Jan 20.
To evaluate the effect of rescuer team size on objective skill measures of basic life support (BLS) and advanced life support (ALS) using high-fidelity canine CPR simulation.
Prospective, experimental study.
Veterinary clinical simulation center.
Forty-eight Reassessment Campaign on Veterinary Resuscitation CPR-certified veterinary students.
Five groups of participants each conducted 3 CPR simulations in configurations of 4, 6, and 8 rescuers. Simulations represented a shock patient declining into asystole, followed by ventricular fibrillation and return of spontaneous circulation. Resuscitation efforts were video-recorded to evaluate BLS and ALS tasks. Mean (±SD) was derived and data were compared among team sizes using ANOVA and Tukey's post hoc analysis. Significance was set at P < 0.05. Among teams of 4, 6, and 8 rescuers, time to first chest compression (13 s [±6], 9 s [±2], 8 s [±4]; P = 0.24) and positive-pressure breath (101 s [±37], 56 s [±15], 67 s [±24]; P = 0.05) were not significantly different. Chest compression (100/min [±5], 108/min [±6], 107/min [±6]; P = 0.12) and ventilatory rates (9/min [±1], respectively, P = 0.52) were not significantly different. Time without chest compressions/total length of CPR was not significantly different (72 s [±16], 61 s [±16], 54 s [±8]; P = 0.15). Capnography and ECG monitoring were used by all teams. Time to first vasopressor administration was significantly different among team sizes (268 s [±70], 164 s [±65], 174 s [±34]; P = 0.04), with vasopressors being most quickly administered by teams of 6 rescuers. Time to electrical defibrillation was not significantly different (486 s [±45], 424 s [±22], 488 s [±181]; P = 0.57). Incorrect ALS interventions occurred in 60%, 0%, and 40% of CPR events in 4, 6, and 8 rescuer teams, respectively.
Although the achievement of BLS tasks was comparable in teams of 4 rescuers, teams of 6 rescuers may be preferable based on differences in the rate of guideline-incompliant treatments and ALS task efficiency. Teams of 8 rescuers were neither more efficient nor more accurate at conducting BLS and ALS tasks.
使用高仿真犬心肺复苏模拟评估救援团队规模对基础生命支持（BLS）和高级生命支持（ALS）客观技能指标的影响。
前瞻性实验研究。
兽医临床模拟中心。
48名通过兽医复苏心肺复苏再评估活动认证的兽医专业学生。
五组参与者分别以4人、6人和8人的配置进行3次心肺复苏模拟。模拟场景为一名休克患者发展为心搏停止，随后出现心室颤动并恢复自主循环。对复苏过程进行视频记录以评估BLS和ALS任务。计算平均值（±标准差），并使用方差分析和Tukey事后分析对不同团队规模的数据进行比较。显著性设定为P < 0.05。在4人、6人和8人的团队中，首次胸外按压时间（13秒[±6]、9秒[±2]、8秒[±4]；P = 0.24）和正压通气时间（101秒[±37]、56秒[±15]、67秒[±24]；P = 0.05）无显著差异。胸外按压频率（100次/分钟[±5]、108次/分钟[±6]、107次/分钟[±6]；P = 0.12）和通气频率（均为9次/分钟[±1]，P = 0.52）无显著差异。无胸外按压时间/心肺复苏总时长无显著差异（72秒[±16]、61秒[±16]、54秒[±8]；P = 0.15）。所有团队均使用了二氧化碳波形图和心电图监测。不同团队规模首次使用血管加压药的时间存在显著差异（268秒[±70]、164秒[±65]、174秒[±34]；P = 0.04），6人团队使用血管加压药最快。首次电除颤时间无显著差异（486秒[±45]、424秒[±22]、488秒[±181]；P = 0.57）。在4人、6人和8人团队的心肺复苏事件中，分别有60%、0%和40%出现了不正确的ALS干预。
尽管4人团队在完成BLS任务方面与其他团队相当，但基于不符合指南治疗的发生率和ALS任务效率的差异，6人团队可能更具优势。8人团队在进行BLS和ALS任务时既没有更高的效率也没有更高的准确性。
