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A large study suggests that the Apple Watch can at least sometimes detect disturbing irregular heartbeats, but experts say more work is needed to determine whether the use of wearable technology for screening problems heart really helps. More than 419,000 Apple Watch users have endorsed this unusual study, making it the largest screening exploration for atrial fibrillation in apparently healthy people, a condition that, if it is not not treated, can possibly cause stroke.
Individuals who received an alert were expected to consult a study physician via telemedicine and then wear an ECG patch measuring cardiac activity during the following week to determine the accuracy of the watch.
If he detected another irregular heartbeat while someone was wearing the EKG patch, he was really at 84%, he said.
Saturday's study did not include watches with this capability.
To prove that detecting a-fib early on decreases the risk of stroke would require years of study.
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