Lateral Vascular Patch Grafts

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Abstract
This study summarizes 296 lateral vascular patch grafts in dogs. A standard piece of vessel wall was excised and the defect replaced with a number of materials both autogenous and synthetic. These included bowel, peritoneum, autogenous fascia, autogenous vein, autogenous artery, teflon and 2 types of dacron. In addition overly large patches were placed such that an aneurysmal result was obtained in some animals. In other animals dacron and vein patches were purposely infected to study these results. Generally the potency results were very good in the larger and medium sized vessels, quite good in the small vessels but very poor in the tiny arteries. Potency in the inferior vena cava patches was also good. It was noted however that excessively loose patches purposely made aneurysmal led in a significant number of cases to thrombosis. These patch grafts tolerated the Escherichia coli infection which was established quite well with a high rate of potency and with almost no secondary hemorrhage. The continuing viability of the autogenous vein patches was again noted. Several clinical principles are drawn based on this experience.

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