I had cardiac ablation a few years back...and it didn't make my neuropathy in extremities worse or better at all. I don't think there should be a problem or risk of affecting your neuropathy by doing the ablation, but ask your neurologist for his/her input.

Your SVT may be an extention of your peripheral neuropathy...as in autonomic neuropathy. My ablation was for cardiac rate/rhythm problems related to autonomic neuropathy.