Apple Watch Could Check for Heart Attack Symptoms, Research Suggests

The Apple Watch could be used to check for symptoms of a heart attack (myocardial infarction), research published in the Texas Heart Institute Journal suggests (via MyHealthyApple).

apple watch ecg wrist
Myocardial infarction occurs when parts of the heart muscle do not receive enough oxygen because there is a block in the blood flow to the heart. Researchers from the Texas Heart Institute have been studying using the Apple Watch to help diagnose myocardial infarction symptoms using the electrocardiogram (ECG) feature on Apple Watch Series 4, 5, 6, and 7 models to record multiple ECG leads on different parts of the body.

Outcomes following a heart attack depend on how long before treatment begins. More than half of individuals with myocardial infarction die in an emergency room or before reaching a hospital within an hour of the onset of symptoms. The Apple Watch could provide a reliable analysis of heart attack risk when symptoms develop, send a clear signal to the user to seek urgent medical attention, and reduce the delay to get treatment, the research suggests.

Medical professionals usually confirm myocardial infarction using a traditional 12-lead electrocardiogram that requires specific equipment and professional training, while the Apple Watch uses a positive electrode on the back of the device and a negative electrode on the Digital Crown to record a single-lead ECG. As such, the Apple Watch could not replace hospital-grade medical equipment, but provide a new screening tool for other environments.

The researchers claim that the Apple Watch shows promise for detecting myocardial infarction as multiple studies have shown that the device can record multiple-lead ECG signals that accurately detect the ST change during a heart attack. Additional clinical data is required, but the ongoing research provides a glance at one of the new health-monitoring capabilities that could one day be an official Apple Watch feature.

Related Roundup: Apple Watch 10
Tag: ECG
Buyer's Guide: Apple Watch (Caution)

Popular Stories

iPhone 17 Pro Lower Logo Feature 1

iPhone 17 Pro Coming Soon With These 14 New Features

Monday June 30, 2025 1:08 pm PDT by
Apple's next-generation iPhone 17 Pro and iPhone 17 Pro Max are less than three months away, and there are plenty of rumors about the devices. Apple is expected to launch the iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max in September this year. Below, we recap key changes rumored for the iPhone 17 Pro models:Aluminum frame: iPhone 17 Pro models are rumored to have an...
A18 Pro Chip

New MacBook With A18 Pro Chip Spotted in Apple Code

Monday June 30, 2025 8:05 am PDT by
Apple is developing a MacBook with the A18 Pro chip, according to findings in backend code uncovered by MacRumors. Earlier today, Apple analyst Ming-Chi Kuo reported that Apple is planning to launch a low-cost MacBook powered by an iPhone chip. The machine is expected to feature a 13-inch display, the A18 Pro chip, and color options that include silver, blue, pink, and yellow. MacRumors...
iPhone Car Key WWDC 2025

Apple Announces 13 Automakers Planning to Offer iPhone Car Keys

Friday June 27, 2025 11:42 am PDT by
In 2020, Apple added a digital car key feature to its Wallet app, allowing users to lock, unlock, and start a compatible vehicle with an iPhone or Apple Watch. The feature is currently offered by select automakers, including Audi, BMW, Hyundai, Kia, Genesis, Mercedes-Benz, Volvo, and a handful of others, and it is set to expand further. During its WWDC 2025 keynote, Apple said that 13...
maxresdefault

Five Features Coming to AirPods Pro 3

Friday June 27, 2025 10:52 am PDT by
Apple hasn't updated the AirPods Pro since 2022, and the earbuds are due for a refresh. We're counting on a new model this year, and we've seen several hints of new AirPods tucked away in Apple's code. Rumors suggest that Apple has some exciting new features planned that will make it worthwhile to upgrade to the latest model. Subscribe to the MacRumors YouTube channel for more videos. Heal...
macbook air spacegray purple

Apple Planning to Launch Low-Cost MacBook Powered By iPhone Chip

Monday June 30, 2025 3:20 am PDT by
Apple is planning to launch a low-cost MacBook powered by an iPhone chip, according to Apple analyst Ming-Chi Kuo. In an article published on X, Kuo explained that the device will feature a 13-inch display and the A18 Pro chip, making it the first Mac powered by an iPhone chip. The A18 Pro chip debuted in the iPhone 16 Pro last year. To date, all Apple silicon Macs have contained M-series...
anker power bank recall

PSA: Anker Recalls Multiple Power Banks Due to Fire Risk

Friday June 27, 2025 4:16 pm PDT by
Popular accessory maker Anker this month launched two separate recalls for its power banks, some of which may be a fire risk. The first recall affects Anker PowerCore 10000 Power Banks sold between June 1, 2016 and December 31, 2022 in the United States. Anker says that these power banks have a "potential issue" with the battery inside, which can lead to overheating, melting of plastic...
Chase Sapphire Reserve Apple Perk Feature

Chase Sapphire Reserve Card Introduces New Perk for Apple Customers

Wednesday June 25, 2025 2:08 pm PDT by
Chase this week announced a series of new perks for its premium Sapphire Reserve credit card, and one of them is for a pair of Apple services. Specifically, the credit card now offers complimentary annual subscriptions to Apple TV+ and Apple Music, a value of up to $250 per year. If you are already paying for Apple TV+ and/or Apple Music directly through Apple, those subscriptions will...
replay all time playlist apple music

Apple Music Debuts All-New Personalized Playlist

Monday June 30, 2025 7:16 am PDT by
As part of its 10-year celebrations of Apple Music, Apple today released an all-new personalized playlist that collates your entire listening history. The playlist, called "Replay All Time," expands on Apple Music's existing Replay features. Previously, users could only see their top songs for each individual calendar year that they've been subscribed to Apple Music, but now, Replay All...

Top Rated Comments

fel10 Avatar
38 months ago
My hypochondriac ass needs this
Score: 13 Votes (Like | Disagree)
djcerla Avatar
38 months ago

The AW is not a medical device. Never trust your health to a consumer grade toy watch.
It’s been proved times and times again that the single lead Apple Watch ECG is as accurate as hospital machines.

Clearly, you need several leads to fully diagnose the problem, but one is enough to become aware of it in the first place.
Score: 10 Votes (Like | Disagree)
Leon Ze Professional Avatar
38 months ago
This is what makes the Apple watch special. Good stuff keep up the great work Apple.
Score: 7 Votes (Like | Disagree)
BobSc Avatar
38 months ago

The AW is not a medical device. Never trust your health to a consumer grade toy watch.
Incredibly ignorant statement.
Score: 6 Votes (Like | Disagree)
siddavis Avatar
38 months ago

It’s been proved times and times again that the single lead Apple Watch ECG is as accurate as hospital machines.

Clearly, you need several leads to fully diagnose the problem, but one is enough to become aware of it in the first place.
I wish I could give this 10 thumbs up. I am what I would consider a quite healthy, middle aged man. My Apple Watch alerted me that something was not right with effectively no physical symptoms. The next day, my doctor was able to accurately diagnose a heart condition that I have and I am now under the care of a cardiologist. I am OK, but it will be something to monitor for the rest of my life.

I never once thought of it as a doctor on my wrist, but rather an additional tool.
Score: 6 Votes (Like | Disagree)
kiranmk2 Avatar
38 months ago
The world needs to rethink medical device testing and approval as it just takes too long. In the past I get it that it would need a long time as studies would probably only have a few thousand participants at best, but when using widely owned consumer hardware such as the Apple Watch it would be much easier to get millions of people into clinical tests. It saddens me to think how many people are going to die unnecessarily purely because approval takes so long.
Score: 4 Votes (Like | Disagree)