I have had four (best I can remember) electro cardioversions, two of them lasted about 18 months, albeit I was taking propafenone and
warfarin during these NSR periods. The other two lasted much less time and the last, following the failed maze procedure lasted only 5 days. So, I am no longer a candidate for electro cardioversions, and it seems not justified to try Ablation, and I have choosen not to try the heavy duty drugs. The strongest I have used is Rythmol SR 425 mg twice a day.