I was in persistent Afib until I received a PFA and then I was Afib free for about 8 months with my pulse in the 70s. No meds except Eliquis. Then over a 3 month period I had 2 RVR episodes with pulse hovering around 175. Visits to the ER and back on Diltiazem 180MG. If I did any moderate level exercise I would have a bout of Afib that would last anywhere from 30 minutes to 3 hours. Just sit around then I would be back in sinus rhythm. But, my pulse was in the 80s when resting. Now over the last 2 months or so my pulse has gone back down to the 70s during the day, and nighttime it is in the 60s. I am back to long walks in the morning interspaced with some running. My pulse goes into the tachycardia range over 100, but no Afib. Sit and veg out in front of the computer and pulse goes back down below 100 and keeps dropping. Maybe it took some time for the Diltiazem to start working or I don't know what. All I know is that I can now exercise and do heavy work around my place like stacking 100 lb bales of hay with no Afib.