Marcus says the results displayed on both devices are concerning for Vanessa. He wants to follow up with her about the early beat that was detected.
For people with more serious heart conditions, this could help doctors make a faster diagnosis and allow them to treat the problem sooner.
The irregular heart rhythm notification is already available on all Apple Watches starting with the Series 1 and can be set up in the Heart section of the Watch app.
The EKG app is only available on the Apple Watch Series 4 and is only available in the US, though Apple expects to get regulatory approval for this feature in other countries later on.
Article credit: https://www.cnet.com/pictures/apple-watch-gets-fda-permission-for-ekg-monitoring/#ftag=CAD590a51e