An emergency physician took to Reddit to explain the Apple Watch ECG and what the FDA approval actually means.
In summary, the new Apple Watch looks like a great tool, but it is not meant to be a medical grade device and not a substitute for medical and professional evaluation in the case of symptoms. Even if your Apple Watch ECG appears totally normal that does not necessarily mean you do not have atrial fibrillation or other cardiac abnormalities.
Basically, I was totally wrong when I wrote about the ECG function. Also, FDA-approved doesn’t mean the Apple Watch is a medical device. It’s in the Class II category which puts it on the same level as condoms and home pregnancy kits. The Verge has details as well.
Check It Out: An Emergency Physician Explains the Apple Watch ECG