Hi Mary, i can really relate to your concern. Ive had a total of 9 Ablations and had a pacemaker also. I was not Afib bur ventricular Tachacardia. I will say i truly had 2 very successful ablations i the early years. I then due to my EP dr moving tried a new one. I still believe to this day as i found out after the ablation that i did not need that one he was convinced he could get me off my meds with another ablation. I think he was something of a Maverick and tried to do to much. Well that was 2015 and by November 2017 i did not leave the hospital until. I received my new heart in jan 2018. They tried 5 more ablations but without success and i was getting shocked so much to keep me in rythum . So what im basically saying is if you have had great success with your current dr then trust him. Im still in contact with the dr i originally had for the first 2 ablations and after the fact i was talking to him and he never would have recommended an ablation since honestly i was doing great. With me if my first dr would have suggested it i would have trusted him and he was a type to only do what was needed. I learned a lesson. So my advice is if you have a great history with your current dr go with his or hers advice. If its a new dr i would get second opinions. Btw the dr that did the third ablation is not a Mayo dr. I personally trust all of the drs at Mayo i have worked with. Good luck and were here to help.