Latest report from EP, No prolongued attacks of AF or SVT since month after ablation in 2010, but now have first degree heart block and many ectopics. I have reduced Bisoprolol to 2.5 instead of 5mg and this has increased my heartbeat from the 40's to the 50's which has increased my energy levels and not so many ectopics during exercise as before. He says I can gradually decrease dose once more to 1.25. Altogether feel much better, could it have been the Bisoprolol causing the problems. Happy New Year to one and all and good health.