In this series we present the results of a retrospective analysis of 66 vasovasostomy procedures performed between 1983 and 1991. Obstructive intervals and serum antisperm antibodies were correlated with pregnancy and patency rates. With obstructive intervals of less than 5 years a patency rate of 100% (31/31) was obtained. Even more than 10 years after reversal, pregnancy occurred in 25% (2/8) of the patients. Preoperative serum antisperm antibodies were correlated with pregnancy rates. Patients with a high agglutinin titre of 1/64 obtained a pregnancy rate of 23% (3/13). Those men who had no circulating antisperm antibodies in their blood had a significantly better chance in obtaining pregnancy (pregnancy rate 80%). In this study we accounted for an overall pregnancy rate of 51.5% (34/66) versus an overall patency rate of 84.8% (56/66). Neither long obstructive intervals nor high antisperm antibody titres should dissuade a surgeon from performing a vasovasostomy procedure.

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