I had Afib for a long time. Went undiagnosed for 10 years or more. Never could get an EKG when it was happening. Long about 2006 I finally got a ekg at my docs office when I was in afib. Next thing I knew I was in an ambulance on the way to the hospital. Freaked me the ef out. After about several bouts with different meds and 20 lbs later my heart doc sent me to a sleep doctor who gave me a sleep study. I was severe sleep apnea, stop breathing 59 times every hour. Turns out sleep apnea is a major cause of Afib.
Went on cpap and didn't tolerate it well. Gave me sinus infections, take it off in my sleep, ect.. Sleep doctor sent me to an ENT. She said she thought she could cure my sleep apnea by removing my tonsils and cleaning up my sinuses. She said my tonsils were some of the worst she'd ever seen. Sure enough after removing my tonsils, my sleep apnea was gone. Gradually my episodes of afib went away. I occasionally will still go into afib every 2-3 years. I had first episode a few weeks ago in probably 5 years.