Abstract
In many patients undergoing long-term hemodialysis, blood access problems, i.e., inadequate blood flow volume for dialysis have been seen periodically. A microscopic surgery technique was used to create adequate arteriovenous fistulae in order to eliminate these problems in 270 cases starting in 1975. Thus, blood access problems were reduced quite favorably.
The histopathological changes of arteries and veins were investigated in order to ascertain whether the failed blood access originated from the vascular area itself or not. Although arteries were considered changes of Arteriosclerosis, Hypertention and Diabetes, there was appreciated various hyalin degenerations in veins.
Cardiac pressure study was undertaken to estimate the effects of arteriovenous fistulae on circulatory function. There were no significant enanges, before and after surcery, with fistulae of 5-6mm in diameter.
