Microvascular techniques for polar artery reconstruction in kidney transplants

Abstract

The complications of ureteral ischemia make revascularization of polar vessels attractive in cadaver and live-related transplants. Thirty-two patients underwent reconstruction of polar vessels of 1.2 to 2.5 mm, in diameter after revascularization of the major vessels as follows: (1) inferior epigastric artery to polar artery, ten patients - six cadaver transplants, four living-related transplants (The vessels are spatulated and sutured precisely by microvascular techniques with Nos. 7-0 or 8-0 Tevdek); (2) polar vessel with a patch of aorta to iliac artery, one patient - living relative donor; (3) polar artery to the main renal artery or branch, 17 patients - 14 cadaver transplants, three living-related transplants [A Waters "MOX"-100 machine is used with cryoprecipitated plasma (800 mg. of SoluMedrol and 80 U. of insulin added) for preservation.]; (4) autogenous saphenous vein graft, two patients - one child receiving on adult live-related kidney and one cadaver transplant with three arteries and a stenosis of the inferior polar vessel; (5) polar artery to vein patch in iliac artery, two patients - cadaver transplants. Follow-up was done by arteriography (18 patients), direct observation (two patients), and by use of ultrasound (one patient). The remaining 11 patients have exhibited no evidence of occlusion. Twenty of 21 patients exhibited patent vessels; one thrombosed at the time of the transplant operation. Long-term patency in those patients studied was 95%. We advocate small-vessel reconstruction in human renal transplantation, either during ex vivo preservation (workbench surgery) or at the time of transplantation.