Apple Releases watchOS 5.2 Enabling ECG Functionality in Europe and Hong Kong

Apple Releases watchOS 5.2 Enabling ECG Functionality in Europe and Hong Kong

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Apple has released watchOS 5.2 for the Apple Watch. The firmware update lets users across Europe and Hong Kong take an ECG reading with the Apple Watch Series 4. The ECG app and irregular rhythm notification are now CE marked and cleared in the European Economic Area.

Part of the free watchOS 5.2 software update, the ECG app can capture heart rhythm on demand in a moment when users experience symptoms such as a rapid or skipped heart beat and help provide clinically important data to physicians. The irregular rhythm notification feature on Apple Watch occasionally checks heart rhythm in the background and sends a notification if an irregular heart rhythm that appears to be atrial fibrillation (AFib) is identified. The ECG app and irregular rhythm notification feature can alert users to signs of AFib. Left untreated, AFib is one of the leading conditions that can result in stroke, the second most common cause of death around the world.

“We’ve seen the ECG app and irregular rhythm notifications on Apple Watch have meaningful impact on our customers across the United States,” said Jeff Williams, Apple’s chief operating officer. “We are excited to bring these features to customers in Europe and Hong Kong, giving them access to empowering information about their heart health.”

Apple Releases watchOS 5.2 Enabling ECG Functionality in Europe and Hong Kong


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ECG App
New electrodes built into the back crystal and Digital Crown on Apple Watch Series 4 work together with the ECG app to enable customers to take an ECG similar to a single-lead electrocardiogram. Taking an ECG recording is as simple as launching the ECG app on Apple Watch Series 4 and touching the Digital Crown, which completes the circuit and allows electrical signals across the user’s heart to be measured. After 30 seconds, the ECG app can classify the user’s heart rhythm as AFib or sinus rhythm.

All recordings, their associated classifications and any noted symptoms are stored securely in the Health app on iPhone, from which users can share a PDF of the results with physicians.
A clinical trial of around 600 participants found the ECG app on Apple Watch demonstrated 98.3 percent sensitivity in classifying AFib and 99.6 percent specificity in classifying sinus rhythm in classifiable recordings when compared to a gold standard 12-lead ECG administered by a cardiologist. 87.8 percent of recordings in the study could be classified by the ECG app.

Apple Releases watchOS 5.2 Enabling ECG Functionality in Europe and Hong Kong

Irregular Rhythm Notification
Available on Apple Watch Series 1 or later, the irregular rhythm notification feature will occasionally check the user’s heart rhythm in the background for signs of an irregular heart rhythm using the optical heart sensor. If an irregular rhythm is detected on five rhythm checks over a minimum of 65 minutes, Apple Watch alerts the user with a notification.

The irregular rhythm notification feature was recently studied in the Apple Heart Study. With over 400,000 participants, the Apple Heart Study was the largest screening study on atrial fibrillation ever conducted, and one of the largest cardiovascular trials to date.

Released March 16, 2019, Stanford Medicine’s results from the Apple Heart Study found “only 0.5 percent of participants received irregular pulse notifications, an important finding given concerns about potential over-notification.” The study further found evidence to support wearable technology has the ability to safely identify heart rate irregularities, which subsequent testing confirmed to be atrial fibrillation.
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Apple Releases watchOS 5.2 Enabling ECG Functionality in Europe and Hong Kong

The ECG app is now available in the following countries: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Guam, Hong Kong, Hungary, Ireland, Italy, Luxembourg, Netherlands, Portugal, Puerto Rico, Romania, Spain, Sweden, Switzerland, United Kingdom, United States, US Virgin Islands

You can install the watchOS 5.2 update from the Watch app on your iOS device. You must first update to iOS 12.2.

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Apple Releases watchOS 5.2 Enabling ECG Functionality in Europe and Hong Kong

bnelson796 - March 28, 2019 at 12:45pm
It is truly amazing that Apple makes such a big deal over the smallest things. Who really gives a care about a press release about if a country can use a feature or not.
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