Why the study?
The Apple Watch Series 4 uses electrodes to generate a single-lead ECG and rhythm notifications, but its accuracy for detecting AF needed assessment in post-cardiac surgery patients.
Does the Apple Watch Series 4 accurately detect atrial fibrillation in post-cardiac surgery patients compared to telemetry?
Does the Apple Watch Series 4 accurately detect atrial fibrillation in post-cardiac surgery patients compared to telemetry?
The Apple Watch Series 4 demonstrated low sensitivity (41%) for detecting atrial fibrillation via its notification feature in post-cardiac surgery patients.
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PPV of 0.84 for AF notifications supports wearable screening; leaves open confirmatory testing and outcome data needs.
Seshadri et al. (2020) studied this question.
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