I had one incident in my 54 years of dealing with SVT that scared the daylights out of me. I don't know if it was associated with my SVT or not, But in the 8 years following my electrophysiology study, I have never experienced it again. I had what I believe was a Sinus Pause. It felt like the pause was forever, when it was probably a few seconds. But I remember the strange stillness, and then the onset of dizziness before normal rhythm resumed. There was no pain associated with the pause, just this strange stillness within me. The event really shook me up probably because I thought I could have croaked at the office without seeing my wife again. Of course all of my SVT events, perhaps in the thousands, were all anxiety provoking, but this one event sticks out more than any of them.