Tim Cook Tweets Story of User's Apple Watch Detecting Atrial Fibrillation - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Tim Cook Tweets Story of User's Apple Watch Detecting Atrial Fibrillation

Apple CEO Tim Cook today shared a story on Twitter of an Apple Watch that alerted its user to atrial fibrillation, potentially saving their life in the process.

ecgapplewatchinaction
Elissa Lombardo tweeted Cook with her husband's experience with Apple Watch that occurred just two days after he started wearing the device.

The smartwatch's ECG feature detected the case of A-Fib during an elevated heart rate, which led her husband to seek medical attention.

Medical professionals apparently discovered a "major blockage" in his arteries but were able to correct the problem, and two days later he was feeling fine again.

According to Lombardo, her husband presented with similar symptoms in the past, but on those occasions he never visited the emergency room to get them checked out.


This isn't the first time an Apple Watch has potentially saved someone's life. When the ECG feature launched in December in the U.S., TIME published a story about a 46-year-old Texas resident who was having trouble breathing normally.

Fortunately, since he was wearing an Apple Watch and participating in the recent Apple Heart Study, he was alerted to signs of an irregular heartbeat and went to the emergency room.

At the hospital, doctors hooked him up to an ECG machine and found signs of atrial fibrillation, an irregular heartbeat that can lead to stroke and other potentially fatal complications. He spent the next few days in the hospital while doctors returned him to a normal sinus heart rhythm.

Related Roundup: Apple Watch 11
Tags: ECG, Tim Cook
Buyer's Guide: Apple Watch (Caution)

Popular Stories

youtube iphone apple watch health ad 2026

New Apple Ad Sells the iPhone and Apple Watch Health Pairing

Thursday April 23, 2026 11:18 am PDT by
Apple has published a new ad to appeal to customers in the market for an iPhone and Apple Watch pairing, highlighting the insights it can offer for your health. Titled simply "Health with iPhone + Apple Watch," the half-minute ad focuses on a woman waiting in line at a cafe who begins receiving unsolicited health and fitness advice from other people in the queue, as well as local residents,...
watchos 26 gradient light

This New Apple Watch Face Is Coming in watchOS 26.5

Friday April 24, 2026 5:51 am PDT by
iOS 26.5 and watchOS 26.5 will have a new Pride Luminance wallpaper and Apple Watch face when the updates are released in the coming weeks, according to Bloomberg's Mark Gurman. In a brief tweet, Gurman revealed that Pride Luminance will "Celebrate the vibrancy and individuality of the LGBTQ+ community and customize your watch face with colors from Pride flags." iOS 26.5 has been in...
modular ultra training load

watchOS 27 to Offer New Watch Faces, Including 'Modular Ultra' Variant

Monday May 4, 2026 5:58 am PDT by
For watchOS 27, Apple is testing new Apple Watch faces, and one of them is a simpler version of an existing Apple Watch Ultra watch face that could be coming to standard Series models. Writing in his latest Power On newsletter, Bloomberg's Mark Gurman reports that Apple is testing multiple new faces for watchOS 27, code-named "Orchid." One of them is said to be a "simplified take" on the...

Top Rated Comments

96 months ago
Meanwhile in the UK people are writing Tim on how they are dead and how the feature could have saved their lives.
Score: 9 Votes (Like | Disagree)
arkitect Avatar
96 months ago
Apparently you guys have healthy hearts with the mediterranean diets so will probably last in the queue ;):D
Alas, that used to be true…

;)

Leading ten fast food chains in Italy as of December 2018 ('https://www.statista.com/statistics/561541/top-fast-food-chains-on-facebook-in-italy/')

MacRumors content image

Edit: Seems they even have ambulances on standby outside.
Score: 9 Votes (Like | Disagree)
Dave245 Avatar
96 months ago
In my opinion the Apple Watch is one of Apples best products to date, alongside the AirPods of course :)

Now if only Apple would release a new iMac!
Score: 3 Votes (Like | Disagree)
djcerla Avatar
96 months ago
I’m in Italy and want my life saved, too! Come on Tim.
Score: 3 Votes (Like | Disagree)
spazzcat Avatar
96 months ago
Meanwhile in the UK people are writing Tim on how they are dead and how the feature could have saved their lives.
Those people should write their government to speed up the process of approving the feature...
Score: 2 Votes (Like | Disagree)
bbednarz Avatar
96 months ago
Meanwhile in the UK people are writing Tim on how they are dead and how the feature could have saved their lives.
They should probably be taking it up with the proper medical regulatory boards then. Don't you think Apple would like to have this feature activated around the world?
Score: 2 Votes (Like | Disagree)