Well I Have Been Diagnosed With SVT And Have Had

Well I have been diagnosed with SVT and have had two ablations and am on metroprolol and continue to have issues. This weekend I have had two episodes of the flushing when my heartbeat resets but have had a new thing happen where I like convulse or shake for about 10 Seconds. Happened in the abdomin area and my legs. I just shook it was quite bizarre. Is this just part of the SVT or is there something else going on?