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From 1981 until 1987, 52 vascular accesses were created in patients with end stage renal failure; 392 could be studied retrospectively. Of these, 112 were created by using a biological graft: 88 homologous saphenous vein grafts and 24 bovine heterografts.The overall permeability rate was 94% postoperatively, 62% at 1 year, 45% at 2 and 3 years. There was no statistical difference in the permeability between human saphenous vein grafts and bovine heterografts or between grafts implanted as first access or after failure of an anterior fistula.The main complication observed during the followup was secondary throm bosis, which occurred after an average duration of 8 months. Aneurysms, infec tions, and high flow were very rare. Compared with the results observed with fistulas using the native veins, biological grafts results are poor. Compared with those of other authors 1/m especially for homologous saphenous vein grafts 1/m the authors' results are poor at 1 year and quite good at 2 and 3 years,These data should lead to detection of early stenosis before the end of the first year, especially stenosis of venovenous anastomoses, which are probably responsible for late thrombosis in most cases. [ABSTRACT FROM PUBLISHER]

From 1981 until 1987, 52 vascular accesses were created in patients with end stage renal failure; 392 could be studied retrospectively. Of these, 112 were created by using a biological graft: 88 homologous saphenous vein grafts and 24 bovine heterografts. The overall permeability rate was 94% postoperatively, 62% at 1 year, 45% at 2 and 3 years. There was no statistical difference in the permeability between human saphenous vein grafts and bovine heterografts or between grafts implanted as first access or after failure of an anterior fistula. The main complication observed during the followup was secondary thrombosis, which occurred after an average duration of 8 months. Aneurysms, infections, and high flow were very rare. Compared with the results observed with fistulas using the native veins, biological grafts results are poor. Compared with those of other authors 1/m especially for homologous saphenous vein grafts 1/m the authors' results are poor at 1 year and quite good at 2 and 3 years, These data should lead to detection of early stenosis before the end of the first year, especially stenosis of venovenous anastomoses, which are probably responsible for late thrombosis in most cases. [ABSTRACT FROM AUTHOR]