Apple Watch’s ECG app and heart rhythm notifications can identify early indications of atrial fibrillation, a condition that frequently goes misdiagnosed. Apple Watch ECGs, on the other hand, don’t necessitate a trip to the doctor or a full ECG machine, making them more convenient than traditional ECGs.

In the background, the irregular rhythm notification feature monitors heart rhythm and sends an alert if it detects an irregular heart rhythm that may be indicative of atrial fibrillation (AFib). Within 30 seconds of receiving a notification, users in countries where the feature has been approved can launch the ECG app and perform a more thorough test by placing their finger on the Digital Crown to generate an ECG waveform.
Electrocardiogram (ECG) waves are measured using two Apple Watch algorithms. Using the second algorithm, an ECG app can check for atrial fibrillation (AFib) at higher heart rates, such as while exercising. Version 2 may not be accessible to you, however, if laws exist in your nation or area. You can find out if your Apple Watch or iPhone has the irregular rhythm notification feature by following these steps.
Apple Watch
Apple Watch users can access this feature by pressing the Digital Crown and selecting Settings.
Select the heart at the bottom of the page.
Tap on Notifications for Irregular Rhythm.
The version number can be found by scrolling down.
On iPhone
Open the Health app in your iPhone.
The Browse button is located at the top of the page.
Tap the heart at the bottom of the page.
Tap on Notifications for Irregular Rhythm.
When you’ve reached Options, tap About to bring up the contextual menu.
The irregular rhythm notification’s version number is displayed next to Feature Version.