Between 1965 and 1972, 66 patients at the Johns Hopkins Hospital had tuboplastiescolon; 24 salpingolyses, 18 fimbrioplasties, 6 anastomose, 8 cornual implantations, and 10 multiple procedures. Thirty-nine percent of these patients became pregnant during the follow-up periods, with an average treatment to pregnancy interval of 35 months. This pregnancy rate, however, depended on the length of the followupmdash;the shorter the duration of followup, the lower the pregnancy rate. In order to circumvent this problem, expectancies of pregnancy, when followed up for an indefinite time, were calculated by computer. By this algorithm, it was found that 50percnt; of patients could expect pregnancy following tuboplasties of all kindscolon; 66percnt; after tubolysis, 40percnt; after fimbrioplasty, 50percnt; after anastomosis, 38percnt; after cornual implantation, and 21percnt; after multiple procedures.
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