I have PVCs too and they scare me so much. I'm so scared I'm going to get NSVT or Vtach even though I don't think I've ever had it. I've had 3 kids and got an epidural with each and was even having pvcs while they set it up and I had no problems. Trust me the anesthesiologist will be watching for anything he thinks is abnormal. Everyone has pvcs so he probably won't think anything of it, especially since your doctors aren't concernced. When you have your NSVT, what does your pulse feel like?
".....I would sometimes get nonsustained v tach."
Has this been recorded and reviewed by a professional? If not, what makes you think it's NSVT?
Hey, try not to worry! I used to get sustained VT during exercise, I was diagnosed with a benign condition called RVOTVT, had an ablation in August. Now I have no more VT, but I get approx 1500 PVCs a day, and more during and after exercise. They're annoying, but I've decided to avoid meds as beta blockers made mine worse and I don't want to be on meds my whole life so I just live with it.
If you've been to the docs and they're not concerned, then you shouldn't be either :) you're not going to drop dead, and you'll be absolutely fine with your surgery, as someone else has said you're in the best place in the best hands no matter what happens.
I know it's hard to get your head around, but try as best as you can to force yourself to relax when you feel them, try not to let them worry you as this can just make them more noticeable. I find mine are more noticeable when I am relaxing or sitting at work, so I try and distract myself when I get them.