Minami Kouichiro, Kokubo Yota, Maeda Ichinosuke, Hibino Shingo
Emergency Life Saving and Technique Tokyo, Hachioji, Tokyo, Japan.
New Products Development Office, New Business Research and Development Laboratories, Research and Development Headquarters, SUMITOMO RIKO Company Limited, Komaki-shi, Aichi, Japan.
Am J Emerg Med. 2016 May;34(5):899-902. doi: 10.1016/j.ajem.2016.02.052. Epub 2016 Feb 26.
Feedback devices are used to improve the quality of chest compression (CC). However, reports have noted that accelerometers substantially overestimate depth when cardiopulmonary resuscitation (CPR) is performed on a soft surface. Here, we determined whether a flexible pressure sensor could correctly evaluate the depth CC performed on a mannequin placed on a mattress.
Chest compression was performed 100 times/min by a compression machine on the floor or a mattress, and the depth of CC was monitored using a flexible pressure sensor (Shinnosukekun) and CPRmeter(™). The depth of machine-performed CC was consistently 5cm. We compared data from the feedback sensor with the true depth of CC using dual real-time auto feedback system that incorporated an infrared camera (CPR evolution(™)).
On the floor, the true depth of CC was 5.0±0.0cm (n=100), or identical to the depth of CC performed by the machine. The Shinnosukekun(™) measured a mean (±SD) CC depth of 5.0±0.1cm (n=100), and the CPRmeter(™) measured a depth of 5.0±0.2cm (n=100). On the mattress, the true depth of CC was 4.4±0.0cm (n=100). The Shinnosukekun(™) measured a mean CC depth of 4.4±0.0cm (n=100), and the CPRmeter(™) measured a depth of 4.7±0.1cm (n=100). The data of CPRmeter(™) were overestimated (P<.0001 between the true depth and the CPRmeter(™)-measured depth).
The Shinnosukekun(™) could correctly measure the depth of CC on a mattress. According to our present results, the flexible pressure sensor could be a useful feedback system for CC performed on a soft surface.
反馈设备用于提高胸外按压（CC）的质量。然而，有报告指出，在软表面进行心肺复苏（CPR）时，加速度计会大幅高估按压深度。在此，我们确定了柔性压力传感器能否正确评估在放置于床垫上的人体模型上进行的胸外按压深度。
通过按压机器在地板或床垫上以每分钟100次的频率进行胸外按压，并使用柔性压力传感器（Shinnosukekun）和CPRmeter（™）监测胸外按压的深度。机器进行的胸外按压深度始终为5厘米。我们使用结合了红外摄像头的双实时自动反馈系统（CPR evolution（™）），将反馈传感器的数据与胸外按压的真实深度进行比较。
在地板上，胸外按压的真实深度为5.0±0.0厘米（n = 100），与机器进行的胸外按压深度相同。Shinnosukekun（™）测得的胸外按压平均（±标准差）深度为5.0±0.1厘米（n = 100），CPRmeter（™）测得的深度为5.0±0.2厘米（n = 100）。在床垫上，胸外按压的真实深度为4.4±0.0厘米（n = 100）。Shinnosukekun（™）测得的胸外按压平均深度为4.4±0.0厘米（n = 100），CPRmeter（™）测得的深度为4.7±0.1厘米（n = 100）。CPRmeter（™）的数据被高估了（真实深度与CPRmeter（™）测得的深度之间P <.0001）。
Shinnosukekun（™）可以正确测量床垫上胸外按压的深度。根据我们目前的结果，柔性压力传感器可能是在软表面进行胸外按压时有用的反馈系统。
