Hi,
I'm sorry you are going through all this. I know from experience that it is scary stuff. In 2016 my husband went into Atrial Flutter and was sent to the emergency room. He spent a night there, and by drug use, his heart converted to sinus rhythm (normal) while sleeping. During follow-up appointments, they tested further and found Atrial Flutter (Afl) on one side of his heart and Atrial Fibrillation (Afib) on the other. He then went in for Ablation surgery, where they went from his groin on each side up to the heart to repair the problems. Since he had both conditions, they had to freeze things on one side and burn things on the other. That scared us some, but all went well. He came home the same day and recovered quickly. He had to take several drugs too, but now only takes a milder diuretic pill. He did not need a pacemaker, but I know two people who have them and have done fine with them.
Then in 2018, I was having cataract surgery and apparently went into Afib in the middle of the procedure. I woke up feeling fine but with people buzzing around me, all flustered and worried. So, off I went to a hospital, still feeling nothing. I spent five days there, not allowed to even stand up without a nurse helping me. I did not respond to the various drugs, so they had to cardiovert me (shock my heart while I was out) and my rhythm has been normal since then. I was on some meds for a short while, but nothing now.
Our heart doctor had both of us undergo sleep studies because sleep apnea can cause these electrical-type heart problems. Sure enough, we both have apnea and now sleep comfortably with CPAP machines. I mention this because using the CPAP machines is often a way to avoid further heart issues, plus, we both sleep better now. My husband now sees the heart doc twice a year, and I go just once.
Of course, I cannot predict how things will go for your husband, but maybe it will help to know that the two of you are not alone in this. We both came out fine on the other side of this frightening experience, and I pray that God will protect and comfort your husband and you as you deal with what you are facing together.
Deborah