Review ArticleSmartwatch for the Detection of Atrial FibrillationTajrishi, Farbod Zahedi MD*; Chitsazan, Mandana MD†; Chitsazan, Mitra MD‡; Shojaei, Fahimehalsadat MD†; Gunnam, Vamsikrishna MD†; Chi, Gerald MD†Author Information From the *Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran †Division of Cardiovascular Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA ‡Department of Heart Failure and Transplantation, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran. Received for publication June 26, 2019; accepted July 5, 2019. Dr. Chi receives modest research grant support paid to the Beth Israel Deaconess Medical Center, Harvard Medical School from Portola Pharmaceuticals, Bayer, and Janssen Scientific Affairs. The other authors have no conflicts of interest to report. Reprints: Gerald Chi, MD, Division of Cardiovascular Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, 930 Commonwealth Avenue #3, Boston, MA 02215. E-mail: firstname.lastname@example.org. Critical Pathways in Cardiology: December 2019 - Volume 18 - Issue 4 - p 176-184 doi: 10.1097/HPC.0000000000000192 Buy Metrics Abstract Atrial fibrillation (AF) is the most common arrhythmia and poses a substantial economic burden due to associated thromboembolic complications. Screening for AF may theoretically be effective, but there is no consensus regarding the optimal screening method because the available tools are either invasive or not cost-effective. Recently, smartwatch industry has received a surge of interest for this purpose by introducing technologies such as photoplethysmography, artificial intelligence, and actual electrodes taking an electrocardiogram to measure and analyze heart rate and rhythm with relatively acceptable accuracy. Combined with other features such as ease of use and connectivity, smartwatches can potentially be used for large-scale AF screening and might eventually replace the current gold standards. In this review, we discuss the feasibility of this approach and summarize the current evidence on AF detection with smartwatches. Copyright © 2019 Wolters Kluwer Health, Inc. All rights reserved.