Can a smartwatch detect a heart attack?

No. Current smartwatches cannot detect heart attacks. They detect irregular rhythms (like AFib), which is different. If you have chest pain or heart attack symptoms, call emergency services immediately.

How accurate is Apple Watch ECG?

The Apple Watch ECG is FDA-cleared for detecting AFib and is comparable to a single-lead clinical ECG. It cannot detect all types of heart rhythm abnormalities. Always follow up positive findings with your cardiologist.

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