This study investigates how the positions of paramedic equipment bags affect paramedic performance and biomechanical loads during out-of-hospital Cardiopulmonary Resuscitation (CPR). An experiment was conducted in which 12 paramedic teams (each including two paramedics) performed in-situ simulations of a cardiac-arrest scenario. CPR quality was evaluated using five standard resuscitation measures (i.e., pre- and post-shock pauses, and compression rate, depth and fraction). The spinal loads while lifting, pulling and pushing the equipment bags were assessed using digital human modeling software (Jack) and prediction equation from previous studies. The results highlight where paramedics are currently choosing to position their equipment. They also demonstrate that the positions of the equipment bags affect CPR quality as well as the paramedics' work efficiency, physiological effort and biomechanical loads. The spinal loads ranged from 1901 to 4030N; furthermore, every occasion on which an equipment bag was lifted resulted in spinal forces higher than 3400N, thus exceeding the maximum threshold stipulated by the National Institute for Occupational Safety and Health. 72% of paramedics' postures were categorized as high or very high risk for musculoskeletal disorders by the Rapid Entire Body Assessment. Guidelines related to bag positioning and equipment handling might improve CPR quality and patient outcomes, and reduce paramedics' risk of injury.

中文翻译：

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护理人员设备袋：院外心肺复苏（CPR）期间其位置如何影响护理人员的人体工程学和性能。

这项研究调查了在院外心肺复苏（CPR）期间护理人员设备袋的位置如何影响护理人员的性能和生物力学负荷。进行了一个实验，其中12个护理人员小组（每个小组包括两个护理人员）对心脏骤停情况进行了现场模拟。使用五种标准复苏措施（即休克前和休克后的暂停时间，压缩率，深度和分数）评估CPR质量。使用数字人体建模软件（Jack）和先前研究的预测方程式评估了在抬起，拉动和推动设备袋时的脊柱负荷。结果突出显示了护理人员当前正在选择放置其设备的位置。他们还证明了器械袋的位置会影响心肺复苏术的质量以及医护人员的 工作效率，生理努力和生物力学负荷。脊柱负荷范围为1901至4030N；此外，每次提起设备安全气囊的情况都会导致脊柱力量大于3400N，从而超过了美国国家职业安全与健康研究所规定的最大阈值。快速整体身体评估将72％的护理人员的姿势归为极高或极高的肌肉骨骼疾病风险。与袋子放置和设备处理有关的准则可能会提高心肺复苏质量和患者预后，并减少医护人员受伤的风险。从而超过了国家职业安全与健康研究所规定的最大阈值。快速整体身体评估将72％的护理人员的姿势归为极高或极高的肌肉骨骼疾病风险。与袋子放置和设备处理有关的准则可能会提高心肺复苏质量和患者预后，并减少医护人员受伤的风险。从而超过了国家职业安全与健康研究所规定的最大阈值。快速整体身体评估将72％的护理人员的姿势归为极高或极高的肌肉骨骼疾病风险。与袋子放置和设备处理有关的准则可能会提高心肺复苏质量和患者预后，并减少医护人员受伤的风险。