I have read so much about pvc's on this forum, but I still feel the need to ask, yet, another question. Last night I had pvc's for about 45 min. (I usually only get 1 - 4), coughing did not stop them, neither did changing my position. I took my evening dose of atenolol and they all but went away about 30 mins. later. Now, I know if everything else with my heart was normal that that wouldn't be a problem, what I am wondering is, is it still benign with IST and valvular disease?