[Simple technique of percutaneous ligation of accessory veins for salvage of failing arteriovenous fistulae].

Introduction: Non-maturing arteriovenous fistula is a common problem in hemodialysis units. The main reasons for maturation failure include a poor venous system, vein stenosis, stenosis in an anastomosis, or the presence of collateral veins. Currently, the usual approach to eliminate collateral vein drainage consists in surgical ligation or coil embolization; however, these procedures are time-consuming, logistically demanding and expensive.