I was diagnosed with paroxysmal atrial fibrillation (AF) last August, at a time when I was on the waiting list for thyroid surgery. Since then I had several episodes of AF (lasting for six to twelve hours on average). Been taking flecainide for a while and recently also Dilzem. Waiting for catheter ablation and warfarin clinic to commence.
In the meantime I had the thyroid glands removed completely. Initially I was prescribed T3 which sent me into the worst ever episode of AF. I was then given levothyroxine (100 mcg) which is more agreeable.
If my AF was caused by thyroid problems in theory the trigger should now have vanished, no? But I still got one (light) episode of AF over Easter, two months after thyroidectomy and while on T4. However, no blood test was done after I started T3/T4 medication so I don't know my levels.
I wonder if there are other people who are suffering from both conditions and how they experience the link between thyroid problems and AF.