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1 Cora and Webb Mading Department of Surgery, Baylor College of Medicine, Houston, Texas
Because of recent clinical experiences suggesting a disturbing propensity of autogenous vein grafts to break down and hemorrhage in the presence of infection an experiment was designed to test the hypothesis that autogenous vein grafts are superior to prostheses for arterial replacement in contaminated wounds. Twenty mongrel dogs underwent replacement of either the femoral or iliac arteries bilaterally with Dacron grafts on one side and autogenous vein grafts on the other. Staphylococcus aureus was inoculated into the site of arterial replacement and the animals were followed for graft patency and survival with sacrifice at four to five weeks. The vein grafts exhibited a higher patency rate. Two animals in the infected vein graft group, however, died from hemorrhage secondary to necrosis of the grafts. It appeared that the revascularization process necessary to sustain the vein as a vital graft was unfavorably influenced in some instances by infection.
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