Usefulness of Apple Watch Electrocardiograms for Identifying the Origin of Premature Ventricular Contractions

The Apple Watch (AW) can record single-lead electrocardiograms (ECGs) and has been investigated for arrhythmia detection. In this study we evaluated its accuracy in identifying the origin of premature ventricular contractions (PVCs) vs. standard 12-lead ECGs. A total of 7 patients with PVCs were assessed using both 12-lead and AW ECG recordings. The QRS polarity observed in the AW recordings was consistent with that of the standard ECGs in most cases, demonstrating its utility in estimating three distinct PVC origins. The AW holds potential as an auxiliary tool for PVC origin assessment, contributing to arrhythmia management in clinical practice.