Porcine valve inserted 10 yrs ago but i got a fib and put on coumadin and bisoprolol.i haven't had a fib for 9 years...should i still be on coumadin ?

Clotting Conundrum: Atrial fibrillation is unpredictable and can return at any time. If an ablation procedure was done and a person remains free of recurrent arrhythmia, anticoagulants are usually stopped after a period of time. In this situation, stopping or switching to an alternate drug might be an option, since the valvular issue had nothing to do with the AFIB.