On Thursday, customers with the Apple Watch Series 4 who install the latest software update can access a new feature to identify atrial fibrillation, a common form of an irregular heart rhythm, as well as opt in to more passive monitoring.
Apple got a first-of-its-kind clearance for its electrocardiogram app from federal regulators in September after conducting a preclinical study with 2,000 people. It also did a clinical trial with 600 other participants to ensure it could distinguish between a normal heartbeat, or sinus rhythm, and atrial fibrillation. The company released data on its new features in a white paper, published on Thursday, as well as a physician-facing website.
If you opt in, Apple Watch will check for an irregular rhythm about every two hours when you’re at rest. It only notifies you if it spots an irregularity five consecutive times, as you won’t want to rush to the emergency room over a software glitch.
Read more at CNBC.