I meant to reply to this. One reason I bought the Kardia device is because it was cheaper ($99) than an Apple Watch. And it is easy to use. It does not give continuous monitoring like an Apple Watch but I didn't need that since my episodes last much longer. If my SVT episodes were less than a minute, then by the time I gathered up the Kardia device, and my iPad, and sat down, the SVT episode would have stopped. So there's an advantage to continuous recording. Anyway, regarding the data you have captured, is the Apple Watch able to distinguish between atrial fibrillation (which is a more serious problem), and SVT, and all the other types of arrhythmia? My Kardia device has sometimes been confused when it tries to analyze an ECG even when I could tell it was yet another SVT episode. I know very little about types of heart arrhythmia. I just wanted to mention that it might be worth showing the data from your watch to a doctor. In short, I wonder whether it is wise to assume this is SVT? I know my issue is SVT based on age of onset, all the years of describing it to doctors, etc., etc. And then finally confirmed with the ECGs I captured. Not trying to worry you, just trying to be cautious/helpful.