I was under the impression that it's been established that Tagrisso and some other LC meds can have an impact on the heart. I've not seen a discussion of what the impact actually is, but in my case it appeared to be QTc - prolongation of the heart beat. Given how few responses there've been to my comments, I seem to be among a very very few who have any concerns about ECG results. Even then, upon review of my ECG scans, cardiology concluded that I don't actually have a QTc problem at all. Now that's the way to make your problems go away.

I'll check out iaslc.org. It's amazing what you can learn by poking around different sources. It was after such a poking around that I started taking my Tagrisso at night.