Kang Jung Hee, Cha Won Chul, Chae Minjung Kathy, Park Hang A, Hwang Sung Yeon, Jin Sang Chan, Lee Tae Rim, Shin Tae Gun, Sim Min Seob, Jo Ik Joon, Song Keun Jeong, Rhee Joong Eui, Jeong Yeon Kwon
Department of Emergency Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Clin Exp Emerg Med. 2014 Dec 31;1(2):101-108. doi: 10.15441/ceem.14.006. eCollection 2014 Dec.
We aimed to estimate the accuracy of visual estimation of chest compression depth and identify potential factors affecting accuracy.
This simulation study used a basic life support mannequin, the Ambu man. We recorded chest compression with 7 different depths from 1 to 7 cm. Each video clip was recorded for a cycle of compression. Three different viewpoints were used to record the video. After filming, 25 clips were randomly selected. Health care providers in an emergency department were asked to estimate the depth of compressions while watching the selected video clips. Examiner determinants such as experience and cardiopulmonary resuscitation training and environment determinants such as the location of the camera (examiner) were collected and analyzed. An estimated depth was considered correct if it was consistent with the one recorded. A multivariate analysis predicting the accuracy of compression depth estimation was performed.
Overall, 103 subjects were enrolled in the study; 42 (40.8%) were physicians, 56 (54.4%) nurses, and 5 (4.8%) emergency medical technicians. The mean accuracy was 0.89 (standard deviation, 0.76). Among examiner determinants, only subjects' occupation and clinical experience showed significant association with outcome (P=0.03 and P=0.08, respectively). All environmental determinants showed significant association with the outcome (all P<0.001). Multivariate analysis showed that accuracy rate was significantly associated with occupation, camera position, and compression depth.
The accuracy rate of chest compression depth estimation was 0.89 and was significantly related with examiner's occupation, camera view position, and compression depth.
我们旨在评估胸部按压深度视觉估计的准确性,并确定影响准确性的潜在因素。
本模拟研究使用了一种基础生命支持人体模型,即阿姆布(Ambu)模拟人。我们记录了从1至7厘米的7种不同深度的胸部按压情况。每个视频片段记录一个按压周期。使用三种不同视角来录制视频。拍摄完成后,随机选取25个片段。要求急诊科的医护人员在观看所选视频片段时估计按压深度。收集并分析诸如经验、心肺复苏培训等检查者决定因素以及诸如摄像头(检查者)位置等环境决定因素。如果估计深度与记录深度一致,则认为是正确的。进行了预测按压深度估计准确性的多变量分析。
总体而言,103名受试者参与了本研究;42名(40.8%)为医生,56名(54.4%)为护士,5名(4.8%)为急救医疗技术员。平均准确率为0.89(标准差为0.76)。在检查者决定因素中,只有受试者的职业和临床经验与结果显示出显著关联(分别为P = 0.03和P = 0.08)。所有环境决定因素均与结果显示出显著关联(所有P < 0.001)。多变量分析表明,准确率与职业、摄像头位置和按压深度显著相关。
胸部按压深度估计的准确率为0.89,且与检查者的职业、摄像头视角位置和按压深度显著相关。