watchOS 9: Apple talks about AFib history and sleep stage tracking

Apple unveiled the watchOS 9 update for all Apple Watches from Series 4 on June 6, the two main new features are undoubtedly AFib history and sleep stage tracking. For the first time since the announcements, two Apple executives have explained why Apple chose to go this route for these new health features.

Apple executives describe a long labor

With watchOS 9, Apple will make another phenomenal leap in the field of health, starting with AFib history.
As you know, the Apple Watch is able to perform an ECG and tell you if you have atrial fibrillation. With the future update of the famous connected watch, Apple will provide in addition to the diagnosis, a history to the people who obtained this result.

Jeff Williams, the chief operating officer at Apple explained to the TechCrunch media what a small revolution it was and recalled that the FDA in the United States had approved this novelty:

Everything we do in healthcare is science-based, and AFib’s history has been validated in a clinical study, with participants wearing both an Apple Watch and a reference device authorized by the FDA. In this study, the average difference in weekly measurements between the two devices is actually less than 1%.

Thanks to historical AFib, a patient suffering from chronic atrial fibrillation (whose treatment does not bring results) will be able to obtain daily detailed statistics related to his heart rhythm disorder. This will be useful for him, but also for his cardiologist who will be able to recover data over a longer period of time than with tests over a short period.

keynote wwdc22 watchos 9 afib hsitory

Remember that if the historic AFib is ready for a launch in the United States as soon as watchOS 9 is available, this will not be the case for all countries, Apple must collect authorizations case by case.

Another topic: sleep tracking

The interview continued with a novelty of watchOS 9 which will probably concern a lot more people: the sleep tracking stage.
With watchOS 9, the Apple Watch will be able to show you the time spent in each sleep cycle: awake, REM sleep, central sleep and deep sleep.

Vice President of Fitness Technology Jay Blahnik said:

Before sleep stages, we were really focused on helping people achieve their sleep duration goals, because that’s really important – that consistency – but we wanted to go a little deeper and dig into the science, and provide users with more information about their sleep cycles

He goes on to explain that such a novelty was possible thanks to the solicitation of certain components at the heart of the Apple Watch. The accelerometer and the heart rate sensor are among the two key components for detecting and understanding the duration of your sleep phases.

Watch the full interview

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