Hi , My father is having artrial fibblirication from last 10 years... He underwent knee surgery this year after that has suffered from hear failure.. He is currently on medication 1) blood thinner ( dabigo 110) 1-0-1 2) nebicard 2.5 mg 1-0-0 3) dytor 5 mg 1-0-0 4) cordarone x (1-0-0) From last few weeks in the bp machine shows irregular heart beats every time.. Our concern is that whether cordarone might cause him with side effects... Is there any thing else can be done to solve his artrial fibblirication issue