I had some really troubling PAC and PVC for a year or three, and was definitely under-diagnosed and under-treated, and find that Holter monitoring doesn't care about them at all no matter what the percentages, and saw several PCPs and a couple of cardiologists and they all just shrugged. Frankly I thought they were all idiots. One PCP said he could connect me with a heart rhythm specialist but that didn't even sound like a referral and it was my turn to shrug, if my PCP (with some extra cardiac badges) said it was OK I'd go with it.

Well they were this much right, eventually things got better. Nothing worse happened. I survived.

One more aspect of my story, fwiw. I did a nutrition survey of myself and decided maybe I was short some iodine and it turns out vitamin A. It seems beta carotene is way out of favor now. But I did start taking a multivitamin to cover what I needed and the rest for good luck. Also added "baby carrots" to my diet, just one or two per day. And my PAC/PVC improved at that point by about 98%. I've never heard of any linkage from diet to arrhythmias, though one can posit several possibilities, but that's my story!