[Factors influencing the duration of function of arteriovenous vascular anastomoses in hemodialysis].

The function of an arterio-venous vascular access is influenced by vascular material, hemodynamics, blood coagulation and technique and number of punctures. By careful intraoperative handling, optimal postoperative care and treatment of the vascular access during and after hemodialysis the functional duration may be influenced effectively. The technique of puncture, the puncture cannula and the skill of the "puncture" are of great importance.