Related Experiment Video
Updated: May 5, 2026

Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function
Published on: December 11, 2019
What's the best way to leverage 31 million days of ECG data?
L S Johnson1,2, S Z Diederichsen3, E Svennberg4
1Department of Clinical Sciences, Lund University, Malmö, Sweden. linda.johnson@med.lu.se.
Abstract:
Smartwatches with pulse-plethysmography sensors capable of detecting irregular rhythms, potentially atrial fibrillation (AF), are increasingly common. Their sensitivity for AF detection in different populations is unknown. If ambulatory ECG monitoring were to be offered to all individuals with notifications this would generate vast amounts of ECG data to analyse. This perspective discusses smartwatch sensitivity for actionable AF, resource utilization to optimize stroke prevention, and suggests alternate ways to manage notifications.
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