If it happens during the day, pacemaker is often needed because one of the medications used to treat heart failure
also slows the heart rate
3. if you have worsening symptoms with the atrial fibrillation, medications may sometimes help in maintaining a normal rhythm -- like flecainide, sotalol, tikosyn, and amiodarone.
4. If after several months of good medications, your heart function does not improve, you can discuss the need for a defibrillator (ICD).