So today before going into SVT, my heart fluttered a good long time. No jumping from a single PAC or PVC. It only went to about 160 BPM, a far cry from my usual 220/230, and lasted only about 10 minutes, a benefit of the Metoprolol I believe, but that long, long flutter (no I don't know exactly how long, felt like forever but probably really ten seconds or so) was very scary. It felt like it was never going back to a normal rhythm and it's felt kind of ,"off" ever since (although that may be all in my head). Anyone else ever get this?