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

Masaru Kato; Shunsuke Kawatani; Takuya Tomomori; Akihiro Okamura; Yasuhito Kotake; Koji Aoyama; Jun Akagi; Shintaro Okuda; Shota Hayashi; Kazuhiro Yamamoto

doi:10.1253/circj.CJ-24-0815

Rapid Communications

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

Masaru Kato , Shunsuke Kawatani, Takuya Tomomori, Akihiro Okamura, Yasuhito Kotake, Koji Aoyama, Jun Akagi, Shintaro Okuda, Shota Hayashi, Kazuhiro Yamamoto

Author information

Masaru Kato Corresponding author
Department of Cardiovascular Medicine, Endocrinology and Metabolism, Faculty of Medicine, Tottori University [Japan]
Shunsuke Kawatani
Department of Cardiovascular Medicine, Endocrinology and Metabolism, Faculty of Medicine, Tottori University [Japan]
Takuya Tomomori
Department of Cardiovascular Medicine, Endocrinology and Metabolism, Faculty of Medicine, Tottori University [Japan]
Akihiro Okamura
Department of Cardiovascular Medicine, Endocrinology and Metabolism, Faculty of Medicine, Tottori University [Japan]
Yasuhito Kotake
Department of Cardiovascular Medicine, Endocrinology and Metabolism, Faculty of Medicine, Tottori University [Japan]
Koji Aoyama
School of Medicine, Tottori University [Japan]
Jun Akagi
School of Medicine, Tottori University [Japan]
Shintaro Okuda
School of Medicine, Tottori University [Japan]
Shota Hayashi
School of Medicine, Tottori University [Japan]
Kazuhiro Yamamoto
Department of Cardiovascular Medicine, Endocrinology and Metabolism, Faculty of Medicine, Tottori University [Japan]

Keywords: Apple Watch, Arrhythmia management, Premature ventricular contraction localization

JOURNAL OPEN ACCESS FULL-TEXT HTML

2025 Volume 89 Issue 2 Pages 251-254

DOI https://doi.org/10.1253/circj.CJ-24-0815

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Abstract

Background: 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.

Methods and Results: 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.

Conclusions: The AW holds potential as an auxiliary tool for PVC origin assessment, contributing to arrhythmia management in clinical practice.

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