Threatened and recurrent abortions after treatment of infertility.

: The aim of the study is to evaluate the cases of abortions in women after infertility treatment. The study group consists of 77 women with abortions, who were compared with 200 pregnant women (control group) comparable as to duration of pregnancy and time of hospitalization. All women conceived after successful infertility treatment. Martial history, methods of medical therapy as well as oxytocinase and isooxytocinase blood levels, urine HCG levels, cervical smear and ultrasonographic evaluation were studied during hospitalization. The results show the concordance between biochemical and biophysical pregnancy monitoring with data regarding high risk pregnancies. The medical history review shows no clinically useful differences which may be the background of the prognosis. Each pregnancy after successful infertility treatment should be regarded as a high risk one therefore its monitoring is more important than methods of treatment applied before pregnancy. The differences in ovulation induction methods are statistically significant, however in individual cases are not pathognomonic.