Department of Physiotherapy, University Hospital of North Norway, Tromsø, Norway.
Department of Health and Care Sciences, UiT The Arctic University of Norway, Tromsø, Norway.
Scand Cardiovasc J. 2024 Dec;58(1):2353069. doi: 10.1080/14017431.2024.2353069. Epub 2024 May 25.
Atrial fibrillation (AF) is a common early arrhythmia after heart valve surgery that limits physical activity. We aimed to evaluate the criterion validity of the Apple Watch Series 5 single-lead electrocardiogram (ECG) for detecting AF in patients after heart valve surgery.
We enrolled 105 patients from the University Hospital of North Norway, of whom 93 completed the study. All patients underwent single-lead ECG using the smartwatch three times or more daily on the second to third or third to fourth postoperative day. These results were compared with continuous 2-4 days ECG telemetry monitoring and a 12-lead ECG on the third postoperative day.
On comparing the Apple Watch ECGs with the ECG monitoring, the sensitivity and specificity to detect AF were 91% (75, 100) and 96% (91, 99), respectively. The accuracy was 95% (91, 99). On comparing Apple Watch ECG with a 12-lead ECG, the sensitivity was 71% (62, 100) and the specificity was 92% (92, 100).
The Apple smartwatch single-lead ECG has high sensitivity and specificity, and might be a useful tool for detecting AF in patients after heart valve surgery.
心房颤动（AF）是心脏瓣膜手术后常见的早期心律失常，限制了体力活动。我们旨在评估 Apple Watch Series 5 单导联心电图（ECG）在心脏瓣膜手术后患者中检测 AF 的标准效度。
我们从挪威北大学医院招募了 105 名患者，其中 93 名完成了研究。所有患者在术后第 2 至第 3 天或第 3 至第 4 天，每天使用智能手表进行 3 次或更多次单导联 ECG。这些结果与连续 2-4 天的心电图遥测监测和术后第 3 天的 12 导联心电图进行比较。
将 Apple Watch ECG 与心电图监测进行比较，检测 AF 的灵敏度和特异性分别为 91%（75，100）和 96%（91，99）。准确性为 95%（91，99）。将 Apple Watch ECG 与 12 导联心电图进行比较，灵敏度为 71%（62，100），特异性为 92%（92，100）。
Apple 智能手表单导联 ECG 具有较高的灵敏度和特异性，可能是心脏瓣膜手术后患者检测 AF 的有用工具。
