I had an ablation for afib 9 days ago. After a week of relative quiet, I start to have bouts where I could feel my heart pumping but with a pulse rate of 48-52 bpm. No other major symtoms. After a sleepless night, the nurse told me (by phone) that this was Atrial Tachycardia, that the slow pulse was not a total indication of what was going on with my heart.and to increase my dose of beta blocker from 12 to 25 mg. This made me extremely lightheaded so I went back to my prior dose. While I understand that this is probably a temporary side effect of the ablation and medication is this the case. I am taking Altace, Atenolol and Coumadin. Could this be Bradycardia?