I have been haveing heart failure and A fib,have had conversion twice in the last year and last time it only lasted one day,three week ago went in for an ablation and found that my miatral valve was bad due to an enlarged heart, was told I would not servive the operation ,they took out my pacemaker and put in a difibulator I have been in sinus for almost a month now, they are hopeing my heart will shrink and my 25% refraction will get better if not will I ever be able to get a valve replacement ?