The electrocardiogram function of the Apple Watch Series 4 went live as part of the watchOS 5.1.2 update released on Thursday is already proving its usefulness.
Released on Thursday, the watchOS 5.1.2 update added the ECG app to the Apple Watch Series 4. By using electrodes in the back crystal and the Digital Crown, a 30-second test can be performed, classifying the user’s heart rate as atrial fibrillation (Afib,) sinus rhythm, or inconclusive.
A Reddit user identified as “edentel” wrote a post about their dealings with the Apple Watch Series 4 after running the update. Warned of an abnormal heart rate in notifications, the user tried out the ECG app and was provided the Afib result.
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