atrial fibrillation
"Have endured a fib for about 15 years.  Several cardio versions failed to eliminate the afib.  Was put on Tikosyn about 10 years ago, 500 mg twice daily, which controlled the afib for 9 years or so and then failed to control it.  A double ablation (afib and aflutter) was performed and after about six months, the afib came back.  Next was a defibrillator/pacemaker implant.  
Began to have vfib problems.  Defibrillator fired twice in a 6 month period. Was then put on  amiodarone.  There are new indications that long term use of Tikosyn or Amiodarone side effects may be vfib.  Was taken off Amiodarone after four months.  After 9 months, defibrillator fired again.  Was then put on Sotalol.  Back in normal rhythm. Too early to judge side effects"