Here's how the ECG app works on the latest Apple Watch

Here's how the ECG app works on the latest Apple Watch

Here's how the ECG app works on the latest Apple Watch

In the future, Apple could toggle on the feature for Apple Watch Series 4 users in Canada, but who knows when that will be.

Choose Set Up ECG App on the pop-up telling you about the ECG app on Apple Watch. Even in India, the Watch Series 4 (review) has all the necessary hardware and once the company gets the nod, the ECG read-out app will be activated with a software update.

AFib, as it's called by docs, is a heart disorder in which the two upper chambers of the heart (the atria) beat rapidly and irregularly.

Not anymore. Apple just released its watchOS 5.1.2 update, which adds the highly anticipated ECG app.

The ECG app's ability to accurately classify an ECG recording into AFib and sinus rhythm was validated in a clinical trial of around 600 participants. At the time, Apple said the ECG functionality would ship in a software update 'later this year'.

The watch can intermittently check the wearer's heart rhythm in the background and send a notification if it detects irregular heart rhythm. The Apple Watch 4 is being sold worldwide, of course, and it includes a heart sensor, but the app will be limited to the U.S. for now. Right now Apple only has FDA acceptance for its ECG and non-uniform heart rhythm app, that's why this comes first in the United State.

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An ECG is a very non-invasive medical test created to measure the electrical activity of the human heart, and is most often employed by cardiologists, hospitals and medical centers to aid in the diagnosis of heart conditions like Atrial fibrillation (Afib).

Apple's ECG app isn't a "real" electrocardiogram, of course: It only uses a single sensor on the user's wrist, where formal ECG tests utilize multiple electrodes in more viable locations. The app will instruct users to place a finger on top of the Digital Crown of the Apple Watch.

The ECG app will save the waveform, classification and any other information gathered from the measurement onto the iPhone Health app, according to AppleInsider. With the ECG app and irregular rhythm notification feature, customers can now better understand aspects of their heart health in a more meaningful way.

Receive notifications and animated celebrations when you achieve daily maximum points in a day during an Activity competition. You can also tap on Export a PDF for your Doctor to share a more detailed report easily.

With that out of the way, you can download the latest update for all compatible watches over the air. It gives people access to important heart health data without having to see a doctor first.

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