Reversibility after female sterilization.

The factors influencing the result of reversal of tubal sterilization were investigated in a series of 78 patients who requested this operation during a 5-year period between 1977 and 1982. In the Falope-ring group isthmo-isthmic anastomosis resulted in a 92% pregnancy rate. On the other hand, no pregnancy occurred when the final tubal length after anastomosis was less than 4 cm. Ectopic pregnancy occurred in 5% of the patients.