TY - JOUR AU - Wong, Kam Cheong AU - Thiagalingam, Aravinda AU - Kumar, Saurabh AU - Marschner, Simone AU - Kunwar, Ritu AU - Bailey, Jannine AU - Kok, Cindy AU - Usherwood, Tim AU - Chow, Clara K PY - 2021 DA - 201/8/26 TI -临床环境中手持式12导联心电图设备的用户感知和体验:可用性评估JO - JMIR Cardio SP - e21186 VL - 5is - 2kw -手持KW -心电图KW - ECG KW -可接受度KW -可用性KW -用户感知KW -用户体验KW -心房颤动KW -长QT QT KW -筛查AB -背景:心律失常是死亡的主要原因。诊断心律失常(如房颤)和心脏传导障碍(如校正QT间期延长[QTc])的主要方法是使用12导联心电图(ECG)。手持式12导联心电设备正在市场上兴起。与新兴技术选择相结合，设备可用性的评估应超越在受控实验室环境中验证设备，并评估用户的感知和体验，这对于在临床实践中成功实施至关重要。目的:本研究旨在评估临床医生和患者对手持式12导联ECG设备与传统12导联ECG设备的可用性的看法和体验，以及这种以用户为中心的方法的通用性。方法:将国际可用性标准化组织指南和技术接受模型整合起来，形成这项研究的框架，该研究在澳大利亚新南威尔士州韦斯特米德医院的门诊和心脏病病房进行。每位患者以随机顺序获得的2种体位(仰卧位和站立位)进行2次心电图(每个设备各1次)。使用线性回归分析临床医生使用该设备获得第一次ECG所需的时间(效率)。收集心电图参数(QT间期、QTc间期、心率、PR间期、QRS间期)和参与者满意度调查。 Device reliability was assessed by evaluating the mean difference of QTc measurements within ±15 ms, intraclass correlation coefficient, and level of agreement of the devices in detecting atrial fibrillation and prolonged QTc. Clinicians’ perceptions and feedback were assessed with semistructured interviews based on the Technology Acceptance Model. Results: A total of 100 patients (age: mean 57.9 years, SD 15.2; sex: male: n=64, female n=36) and 11 clinicians (experience acquiring ECGs daily or weekly 10/11, 91%) participated, and 783 ECGs were acquired. Mean differences in QTc measurements of both handheld and conventional devices were within ±15 ms with high intraclass correlation coefficients (range 0.90-0.96), and the devices had a good level of agreement in diagnosing atrial fibrillation and prolonged QTc (κ=0.68-0.93). Regardless of device, QTc measurements when patients were standing were longer duration than QTc measurements when patients were supine. Clinicians’ ECG acquisition times improved with usage (P<.001). Clinicians reported that device characteristics (small size, light weight, portability, and wireless ECG transmission) were highly desired features. Most clinicians agreed that the handheld device could be used for clinician-led mass screening with enhancement in efficiency by increasing user training. Regardless of device, patients reported that they felt comfortable when they were connected to the ECG devices. Conclusions: Reliability and usability of the handheld 12-lead ECG device were comparable to those of a conventional ECG machine. The user-centered evaluation approach helped us identify remediable action to improve the efficiency in using the device and identified highly desirable device features that could potentially help mass screening and remote assessment of patients. The approach could be applied to evaluate and better understand the acceptability and usability of new medical devices. SN - 2561-1011 UR - https://cardio.www.mybigtv.com/2021/2/e21186 UR - https://doi.org/10.2196/21186 UR - http://www.ncbi.nlm.nih.gov/pubmed/34435958 DO - 10.2196/21186 ID - info:doi/10.2196/21186 ER -