BACKGROUND Maintaining highly effective cardiopulmonary resuscitation (CPR) can be particularly difficult when artificial ventilation using a bag-valve-mask device, combined with chest compression have to be carried out by one person. The aim of the study is to compare the quality of CPR conducted by one paramedic using chest compression from the patient's side with compression conducted from the 'over-the-head' position. METHODS The subject of the study were two methods of CPR - 'standard' (STD) and 'over-the-head' (OTH). The STD method consisted of cycles of 30 chest compressions from the patient's side, and two attempts at artificial ventilation after moving round to behind the patient's head. In the OTH method, both compressions and ventilations were conducted from behind the patient's head. RESULTS Both CPR methods were conducted by 38 paramedics working in medical response teams. Statistical analysis was conducted on the data collected, giving the following results: the average time of the interruptions between compression cycles (STD 9.184 s, OTH 7.316 s, p < 0.001); the depth of compression 50-60 mm (STD 50.65%, OTH 60.22%, p < 0.001); the rate of compression 100-120/min. (STD 46.39%, OTH 53.78%, p < 0.001); complete chest wall recoil (STD 84.54%, OTH 91.46%, p < 0.001); correct hand position (STD 99.32%, OTH method 99.66%, p < 0.001). A statistically significant difference was demonstrated in the results to the benefit of the OTH method in the above parameters. The remaining parameters showed no significant differences in comparison to reference values. CONCLUSIONS The higher quality of CPR in the simulated research using the OTH method by a single person justifies the use of this method in a wider range of emergency interventions.

中文翻译：

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心肺复苏过程中胸部按压的标准方法与头顶按压方法的比较-模拟研究。

背景技术当必须由一个人进行使用袋气门面罩装置的人工通气并结合胸部按压时，维持高效的心肺复苏（CPR）可能特别困难。这项研究的目的是比较一名护理人员使用患者侧面的胸部按压与“头顶”位置进行的按压所进行的CPR的质量。方法研究的对象是两种心肺复苏方法-“标准”（STD）和“头顶”（OTH）。STD方法包括从患者侧进行30次胸部按压的循环，以及在向后移动到患者头部后进行两次人工通气的尝试。在OTH方法中，压缩和通气都是从患者的头部后面进行的。结果两种CPR方法均由医疗响应小组中的38名护理人员进行。对收集到的数据进行统计分析，得出以下结果：压缩周期之间中断的平均时间（STD 9.184 s，OTH 7.316 s，p <0.001）；压缩深度50-60 mm（STD 50.65％，OTH 60.22％，p <0.001）; 压缩率100-120 / min。（STD 46.39％，OTH 53.78％，p <0.001）; 完全的胸壁后坐力（STD 84.54％，OTH 91.46％，p <0.001）; 正确的手部位置（STD 99.32％，OTH方法99.66％，p <0.001）。在上述参数中，结果证明了统计上的显着差异，这有益于OTH方法。其余参数与参考值相比没有显着差异。