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Updated: Jul 6, 2025
05:03
Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function
Published on: December 11, 2019
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The Reliability of the Apple Watch's Electrocardiogram
Sara Alnasser1, Dalal Alkalthem1, Sara Alenazi1
1Clinical Sciences, Princess Noura Bint Abdulrahman University, Riyadh, SAU.
Cureus
|January 1, 2024
Summary
The Apple Watch ECG shows high accuracy in detecting atrial fibrillation (AF) and other heart rhythm abnormalities, correlating well with traditional 12-lead ECGs. This makes it a reliable tool for remote cardiac monitoring.
Area of Science:
- Cardiology and Medical Devices
- Digital Health and Wearable Technology
Background:
- Electrocardiograms (ECG) are crucial for diagnosing cardiovascular conditions.
- Mobile ECG devices, like the Apple Watch, offer continuous monitoring capabilities.
- The Apple Watch is FDA-approved for screening and detecting atrial fibrillation (AF).
Purpose of the Study:
- To compare the diagnostic accuracy of the Apple Watch's single-lead ECG against a standard 12-lead ECG.
- To assess the sensitivity and specificity of the Apple Watch ECG for detecting cardiac abnormalities.
- To identify specific arrhythmias detectable by the Apple Watch ECG.
Main Methods:
- A comparative study involving 469 participants at cardiac clinics.
- Simultaneous recording and comparison of Apple Watch single-lead ECG and conventional 12-lead ECG.
- Data analysis included patient demographics, medical history, and ECG interpretations using SPSS Statistics.
Main Results:
- No significant differences were observed in ECG characteristics between the Apple Watch and 12-lead ECG.
- A strong positive correlation was found in heart rate measurements between both devices.
- Atrial fibrillation (AF) was the most common abnormality detected (7.9%), followed by first-degree AV block (6.8%).
- Apple Watch demonstrated high sensitivity for AF detection: 99.54% (automated) and 100% (manual interpretation).
Conclusions:
- The Apple Watch ECG exhibits a robust correlation with traditional 12-lead ECGs in diagnosing arrhythmias.
- The Apple Watch ECG is a dependable technology for remote cardiac rhythm monitoring.
- Cardiac patients can utilize the Apple Watch as a trustworthy tool for ongoing heart health surveillance.
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