Effect of stasis on the patency of microvenous grafts in avulsed rabbit femoral vessels.
Seventy femoral arterial avulsions with interpositional microvenous graft repairs were performed in rabbits and were divided into three groups. In Group A clamps were reapplied for 15 minutes with an overall patency rate of 97% after 3 weeks. The overall patency rate in Group B with 30 minutes reclamping was 93% three weeks later. Group C without clamping served as Controls and a 100% patency rate was achieved. The position of the microclamps, static blood in the region of the anastomoses and in the microvenous grafts as well as the time of reclamping up to 30 minutes did not influence the patency rate in damaged vessels after sufficient resection of injured vessel walls. The results of this experiment suggest that if necessary clamps can be reapplied safely in the clinical situation for up to 30 minutes after microvenous grafts have been completed to enable the microsurgeon to perform further dissection in a bloodless field.
D000818:Animals; D003250:Constriction; D005263:Femoral Artery / Q000293:injuries / Q000601:surgery*; D005268:Femoral Vein / Q000637:transplantation*; D006083:Graft Occlusion, Vascular / Q000209:etiology*; D008866:Microsurgery / Q000379:methods; D011817:Rabbits; D013997:Time Factors