ECG on a smartwatch
A smartwatch with an ECG feature records your heart rhythm for about half a minute and can detect signs of atrial fibrillation.
What does ECG on a smartwatch mean?
For the measurement, you place a finger of your other hand on the watch. This creates a circuit across both arms, and the watch picks up the electrical signals of the heart. The result can be saved as a PDF and shown to your doctor.
The measurement corresponds to a single lead. An ECG at the doctor's uses significantly more and detects correspondingly more. A watch cannot detect a heart attack. The feature has to be approved as a medical device in each country and is therefore not enabled everywhere.
A general explanation of the term, not from a video. How it plays out on a specific device in everyday use is covered in the reviews below.
