Can a smartwatch ECG replace a doctor's ECG?

No — smartwatch ECGs are single-lead screenings, while clinical ECGs use 12 leads for comprehensive diagnosis. Smartwatch ECGs are excellent screening tools for detecting AFib, but they can't diagnose all heart conditions.

How often should I take an ECG reading?

There's no set frequency. Take readings when you feel palpitations, dizziness, or shortness of breath. Some users do weekly baseline checks. The watch's continuous heart rate monitoring will also alert you to irregular rhythms passively.

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