[Etiological factors in sterility and infertility as risk factors in future pregnancies].

An analysis was made of 1420 patients with threatened spontaneous or habitual abortions and pre-term deliveries, concerning the incidence of some etiological factors of infertility that might have been risk factors in the actual pregnancy. The number of pregnant women over 35 years of age in the treated series was significantly higher than in the control group. History data on sterility in the former group showed the incidence of 4.37% and in the control group 1.10%, the difference being highly significant (P less than 0.001). In the investigated series 154 patients (10.85%) had already had previous pre-term deliveries, while in the control group pre-term deliveries amounted to 3.20%, the difference being statistically highly significant (P less than 0.001). History data on spontaneous abortions in the first group showed the incidence of 69.57% (846 patients) and in the control group 16.20% (P less than 0.001). Uterine malformations were recorded in 69 gravidae (4.86%) in the treated group and in 1.20% in the control group, the difference being statistically highly significant (P less than 0.001). In addition to etiological factors, a high incidence of the following anomalies was also revealed: uterine hypoplasia and myoma, cervical laceration, cervico-isthmical insufficiency, and perinatal deaths in the history of the treated group. The importance of antenatal care of pregnant women with previous sterility and infertility is emphasized, as well as the need for considering the prophylactic use of beta-sympathomimetics.