A doctor in the United States has saved a person's life by using Apple Watch Series 4 on his wrist to detect atrial fibrillation at a restaurant.

Atrial fibrillation, a fatal and oftentimes undiagnosed condition, can lead to strokes. The condition often remains hidden as many people do not go through symptoms.

The irregular rhythm alert feature on Apple watch can check heart rhythms and send a notification if irregular heart rhythm seems to be atrial fibrillation (AFib) is identified.

"As a physician, it's much faster to put my #applewatch4 on someone else's wrist to detect disease (A. fib) than finding a ECG machine at a public restaurant! (Indeed, a true #mhealth guardian)," tweeted Tommy Korn MD, anophthalmologist from San Diego, California.

As a physician, it’s much faster to put my #applewatch4 on someone else’s wrist to detect disease (A. fib) than finding a ECG machine at a public restaurant! (Indeed, a true #mhealth guardian) pic.twitter.com/JLVD4JUYI9

— Tommy Korn MD (@TommyKornMD) June 21, 2019

In the replies to his tweet, Korn said that the person diagnosed with A-fib was later doing all right.

Apple Watch Series 4 is now helping users in the United States, Europe, and Hong Kong take an electrocardiogram (ECG) right from their wrist, capturing heartbeat in an instant when they experience symptoms like a skipped or rapid heartbeat and helping to give critical data to doctors.

The cardinal health feature on Apple Watch is yet to turn up in India.

By Sowmya Sangam