'I tried the Apple Watch’s new ecg feature'

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Perhaps the biggest feature which Apple announced with the Apple Watch Series 4 was the inclusion of the ECG sensor. Access to an EKG app is done through the feature's own app installed on the watch; simply activate the app, and place your finger on the crown (i.e. the dial) for 30 seconds. Now, Apple is activating it in the U.S. through watchOS update 5.1.2.

The ECG app is available for free, but it requires an Apple Watch Series 4 and watchOS 5.1.2 or newer.

The same update to watchOS 5.1.2 includes additional Infograph complications for a series of apps on the iPhone, like Mail, Maps, Messages, and Find My Friends. It would alert the user with a notification if it detects an irregular rhythm on five rhythm checks over a minimum of 65 minutes. According to Apple, a study has found the ECG app on the Apple Watch had demonstrated a 98.3% sensitivity in classifying AFib and 99.6% specificity in classifying sinus rhythm in classifiable recordings. If you'd like to hear a doctor explain a bit more about how and why this is an interesting thing for your watch to be able to do, Dr Sanjay Gupta has it covered in this video. From there, tap Heart and then tap Electrocardiogram. The Health app will also provide the user an option to easily turn the relevant information into a PDF file and send it directly to their doctor.

Right now Apple only has FDA clearance for its ECG and irregular heart rhythm app, which is why this is coming to the United States first.

Apple WatchOS 5.1.2 series 4 has come up with all new features and specifications, its new ECG system makes the product more reliable and unique. This may happen when the watch is not in proper contact with the wrist.

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The app then classifies the heartbeat reading as a normal sinus rhythm, atrial fibrillation or inconclusive.

The much larger Apple Heart Study, screening over 400,000 participants for atrial fibrillation, also evaluated the watch's irregular rhythm background notification feature. All recordings, their associated classifications and any noted symptoms are stored securely in the Health app on iPhone.

To complete the setup, you will have to enter your date of birth, and then the watch gives details on how the feature works internally.

"Apple's largest contribution to mankind will be in improving people's health and well-being", Tim Cook told TIME in a recent interview.

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