Apple Watch Series 4’s New ECG Feature May Have Already Saved a Life

Earlier in the week, Apple release watchOS 5.1.2, which enabled the much awaited ECG feature in Apple Watch Series 4. Apple had claimed that the ECG app can indicate whether your heart rhythm shows signs of atrial fibrillation — a serious form of irregular heart rhythm — or sinus rhythm, which means your heart is beating in a normal pattern.
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