Has anyone's PACs just disappeared?

The underlying conditions for PACs are present and will probably be there forever. However, like so many conditions that beset we humans, they can be dormant for years and only surface in the right circumstances. Often it is a stress response brought on by lack of sleep, worry, anxiety, physical trauma, mental/emotional trauma, sometimes even a sunburn or too much sun (those with trigeminal Herpes Simplex lesions know this), new medications, changes to doses of medications, diet, alcohol, recreational drugs, a pathogen...it's a long list.

I have what is called 'sleep onset central apnea', but it only seems to surface after a hospital intervention such as a catheter ablation or an angiogram for me...so far in my history. Otherwise, normally, my only problem is obstructive sleep apnea that a CPAP machine, correctly fitted and worn, and correctly set for the prescribed pressures, does a good job neutralizing. If I fall asleep after supper while watching TV, and yes, at 74, and as the grandson of a gentleman who did that 60 years ago, I do fall asleep after supper, I immediately start snoring. So, even if my now nine year use of a PAP machine has been stellar, and probably saved my life, if I don't use one while falling asleep, that 'underlying condition' pops right up on cue.

So, almost certainly, yes, you are still predisposed to have PACs surface again in the right circumstances. Right now, you're good, and should only think about starting to worry about them if/when they become so frequent that they are truly intrusive and they don't seem to want to stop after a few days.

Mine started over twenty years ago, that is some variety of arrhythmias including frequent PAC and PVC, and some moderately high blood pressure. No particular stress and anxiety, anymore than everyone has, lol. Outside of some BP meds including beta blocker, doctors just shrugged. Got much worse about eleven years ago but a series of doctors all continued to just shrug. I tried various supplements that sometimes helped, somewhat.
Then about five years ago I was again reviewing my diet and discovered I was probably short of at least two nutrients, iodine and vitamin A. I started taking a multivitamin, a little extra iodized salt, and some baby carrots! Also tried beta carotene briefly that did not seem to help over a month so I stopped it. Something worked or random chance, but the very serious assorted arrhythmias did not entirely disappear but the worst were reduced 99% and the rest were reduced about 95%. If a doctor had been responsible I'd have nominated him for the Nobel Prize.

So read it as you will but apparently yes, it's possible for them to go away.

@carbcounter
They can go away just like they can start at anytime. Mine came on dramatically with stress and anxiety I suffered recently.

You did not mentioned taking magnesium. My electrophysiologist (EP) recommended I take 400 mg of magnesium to help with my PACs, and PVCs.

I had PAC's after my ablation for awhile and I was concerned but my cardiologist told me it was no big deal; he said he sees PACs in young people, old people, almost everyone and that I was so much better with an occasional PAC vs A-fib! I learned to relax and although I still feel one or two occasionally, I have had no problems! Afib free is a gift and I can ignore an occasional PAC. Good luck.

Mine started over twenty years ago, that is some variety of arrhythmias including frequent PAC and PVC, and some moderately high blood pressure. No particular stress and anxiety, anymore than everyone has, lol. Outside of some BP meds including beta blocker, doctors just shrugged. Got much worse about eleven years ago but a series of doctors all continued to just shrug. I tried various supplements that sometimes helped, somewhat.
Then about five years ago I was again reviewing my diet and discovered I was probably short of at least two nutrients, iodine and vitamin A. I started taking a multivitamin, a little extra iodized salt, and some baby carrots! Also tried beta carotene briefly that did not seem to help over a month so I stopped it. Something worked or random chance, but the very serious assorted arrhythmias did not entirely disappear but the worst were reduced 99% and the rest were reduced about 95%. If a doctor had been responsible I'd have nominated him for the Nobel Prize.

So read it as you will but apparently yes, it's possible for them to go away.