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Evaluation of long‐term patency rates of different techniques of arterial anastomosis in rabbits

The results of 160 arterial anastomoses performed with four different techniques are presented. The popliteal arteries (mean diameter 0.7 mm) of 40 rabbits in each of four groups were anastomosed using: I. End‐to‐end techique with assymetrical sleeving of the adventitia; II. end‐to‐end technique with symetrical sleeving of the adventitia and wrapping of the suture site with a collagen cuff; III. end‐to‐end technique with symetrical trimming of the adventitia; and IV. end‐in‐end technique. Long‐term patency rates for the above techniques were as follows: Group I, 92.5%; Group II, 87.5%; Group III, 92.5%; Group IV, 90.0%. Group IV anastomoses were completed in an average of 15 minutes compared with an overall average of 24 minutes for the other three groups.