Hemodialysis without heparin: a randomized, controlled, crossover study of two dialysis membranes (AN69ST and polysulfone F60).

Purpose: It has been suggested that clotting of the extracorporeal circuit during hemodialysis (HD) without heparin could be reduced by using the polyacrylonitrile AN69ST membrane. However, this has never been demonstrated in a controlled study. The objective of this study was to compare the AN69ST with a polysulfone membrane during HD without heparin in a controlled study.