I have had A-Fib for many years. I had open-heart surgery in 2010,,,,aortic valve replacement, mitral valve repair and Mazz Procedure. I have taken Amirodione, Flexanide, Multaq and am presently taking Tikosyn. Ablation has been mentioned to me but I have concerns. How bad does the A-Fib have to be before Ablation is done....can the A-Fib cause more damage to my heart? I am so scared and so concerned. Just some answers please. Thank you.