Uploaded August 2026 | Updated September 2026, 3 weeks ago

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After noticing an abnormally high heart rate during triathlon training, Connor took an ECG on his Apple Watch, revealing signs of atrial fibrillation. Doctors later uncovered a congenital heart condition requiring open-heart surgery.

Learn more about Apple Watch heart health features like ECG and heart rate notifications at apple.co/4wCXbqW

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