[Menstrual cycle after artificial abortion]

In 84 women the establishment of the menstrual cycle after artificial abortion was observed by measuring basal temperature, examining the cervical mucus, and by cytologically analysing smears from the lateral vaginal fornix. Out of 3 women with the cycle up to 24 days before abortion, none had a cycle after abortion lasting less than 25 days. Of 31 women with the cycle exceeding 45 days before abortion, only 25 had such a long cycle after abortion. In the subsequent three cycles the menstruation appeared regularly, at the interval of 25--32 days, in 67 women. Before abortion such a cycle existed in 36 women. In most patients (56) the luteinic phase in the first cycle was shorter, it lasted 10 to 12 days.