The effect of stellate ganglion block on the function of arteriovenous fistulas for hemodialysis: A randomized trial.

Background And Purpose: The best access for hemodialysis is an autologous arteriovenous fistula (AVF). The most helpful way for vasodilation in the upper limb is stellate ganglion block. We aim to evaluate the effect of stellate ganglion block on outcome of vascular access for dialysis.