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The influence of arterial insufficiency and venous congestion on composite graft survival

A rabbit auricular amputation model was used to study the relative effects of arterial insufficiency (AI) and venous congestion (VC) on composite graft survival. The percentage of graft survival was significantly greater for the AI group (45.8%) than for the VC group (15.9%) 2 weeks postoperatively. The percentage of graft survival at 3 weeks for the VC, AI, and no‐ligation groups were not statistically different. All three groups were statistically different from the control group, which had both the central artery and vein ligated. The VC group also exhibited significantly more graft edema, as measured by maximal graft thickness, than the other three groups.