[Experimental evaluation of Vitaflon grafts in the venous position].

To examine the possibilities of replacing the great veins by Vitaflon grafts, an experimental study was made on 20 dogs. In the first group animals (n=10), a segment of the infrarenal posterior vena cava was replaced under conditions of routine blood flow. In the second group (n=10), an arteriovenous fistula closed after one month was formed on the thigh.