[Pregnancy and fetal outcome after cessation of oral contraceptives (author's transl)].

In a total of 4149 prenatal patients there were 849 patients who became pregnant following the cessation of the use of oral contraceptives. Results were compared with pregnancies of a similar series of 1000 patients who never had employed contraceptive steroids. Comparison shows a lower incidence of abortion of 5,6% in the oral contraceptive group, compared with 9,2% among the control group. Results show also a lower incidence of toxemia. The incidence of obstetrical surgery was a little higher than in the control group. The incidence of premature birth, perinatal mortality, congenital anomalies, the frequency of twins and of asphyxia neonatorum were similar in both groups. A special group of 107 pregnancies occurring immediatly after cessation of the pill shows no higher risks in pregnancy, during birth or with regard to fetal outcome. An exception is made by the incidence of premature birth that was in this special group 8,8% compared with 5,4% among the control group.