I have recently had two bouts of superventricular tachycardia. One required a cardioversion in the hospital. I have been afraid to do almost anything since then - concerned that it would happen again. I am now on a medication that is supposed to prevent the tachycardia. Tonight I went to a restaurant with a friend, and to three stores for brief shopping trips, despite my fear. Despite a pounding heart and other symptoms, there was no tachycardia. I feel somewhat uplifted that I did these things, despite the fear.