I was in permanent a fib for over 3 years before being given a cardioversion. Dr told me chance of success was doubtful since I was in a fib so long, but I did get 3 cardios which only gave me a few hours of relief. I then had an ablation which lasted 1 year and another cardio which lasted 1 year. Then back into a fib. So back to the EP for another ablation. This only lasted a about 3 months. More cardios. No luck. I'm now on Propafenone which is working but I 'm always afraid of long term effects of meds and I read the meds are only effective for a 2 or 3 years. Has anyone been on this drug for a long period of time and are there any dangerous side effects? I'm thinking of getting another ablation. Has anyone had success with a third ablation after the first 2 failed?