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Updated: Oct 26, 2025

Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function
Published on: December 11, 2019
A Smartwatch Heart Rate Monitor Prompts an Unusual Diagnosis
1Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania.
Abstract:
We report the case of a 54-year-old woman who presented for cardiological evaluation having noted a decline in her heart rate on her wearable heart rate monitor. She was found to be in 2:1 atrioventricular block. Subsequent evaluation revealed cardiac and pulmonary sarcoidosis, treated with steroids and implantable cardioverter-defibrillator placement. (Level of Difficulty: Beginner.).
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