Objective To investigate the clinical effect of r ad iocephalic arteriovenous internal fistulas created by anastomosis with two trape zoid and symmetrical lobulated flap.
The mechanism of endovenous thrombus formation induced by laser irradiation is different from thromboplastic phlebitis, thus endovenous thrombus formation doesn't affect whole body cruor function.
In order to investigate the effects of repair of arteriovenous fistula on heart function so as to widen the range of the indication of allogenetic transplantation of kidney.