Originally Posted by leot
I understand the wall of the vein is thin and weak and can easily be damaged after a couple of uses. By connecting it to an artery and after a couple of months of high blood-flow (from the artery) through this vein, it will balloon out (ie thicken) enough to resist getting poked every other day. So the AV fistula improves the patency of the vein.
However doesn't connecting an artery to a vein have consequences?
Eg What about the areas supplied by that artery, would they not undergo
Thanks in advance
Those areas don't undergo ischemia, collateral are enough to keep the limb functioning plus some fraction goes into the fistula, some goes down the normal pathway. Obviously, some weakness n muscle atrophy is expected. That's why patients with AV fistula a are always advised to exercise that particular limb.