My Marvin has an AV fistula in his lower left arm (he's right-handed). It's about half-way between his wrist and his elbow. He has a nerve that runs right across it, but he's been using it for about 3 1/2 years (buttonholes the last 16 months). For Marvin, the arterial is always painful on the stick. The pain usually eases after about 30 minutes on, and then it's no problem. No problems and no pain on the venous side.
The first part of this fistula's life (about two years), Marvin was in-center and it hurt then, too (with sharps every time and using the "ladder" technique). We're on home hemo now (
home hemo), but blunts don't seem to make any difference pain-wise.
We've discussed this with the surgeon who created it at length several times. The bad part is that this was the last attempt at an access in either arm for Marvin (has had one graft upper left, one old fistula lower left that quit working six months after his first transplant, and three grafts upper right arm). In between all of these grafts and fistulas, Marvin's also had 14 permcaths in the chest (alternating sides) and one temp in the groin. The surgeon who created this (the best surgeon in the world -- I love him!) took a vein out of the back of Marvin's left arm, flipped it around to the inside of the arm, and strengthened it with a vein out of his thigh. We call it "Marvin's Magic Fistula" because no one else thought it could be done and that he would have no other choice but to have an access in the leg (which Marvin vehemently didn't want).
The last time we talked to his surgeon, doc said, "Is it unbearable?" and Marvin said, "No, but it's mighty uncomfortable." Doc said, "We've got to ride this horse as long as we can because the alternative is an access in the leg. I don't know of anything else to do or anything else to try right now. You tell me when you can no longer stand it."
It's painful on every single stick (when I have to use sharps occasionally, the pain is no different), and it hurts me when I hurt Marvin. But, Marvin's been a good egg about it and is doing the best he can. I hope you can find an alternative so you don't have to endure what Marvin does.