ABSTRACT
The performed clinical laboratory and instrumental research involved 93 pregnant women after IVF: 36 with progressive pregnancy and 57 women with missed abortion at term 6-8 weeks. The following parameters were evaluated: family history of thrombosis, menstrual function, gynecological and other diseases, duration of infertility treatment, pelvic organs sonography, hemostasis evaluation and thrombophilia genes investigation. The association of polymorphic allele 455 A of gene FGB with the risk of nondeveloping pregnancy after IVF was revealed. The genotype presence of allele 455 A of gene FGB increases the risk of miscarriage after IVF. The research has also revealed the association of polymorphic allele 4 G of gene PAI-1 in polymorphic locus 675:4 G/5 G with the risk of miscarriage. The received data on hemostatic system at an early term of pregnancy after IVF demonstrate enough stability and consistent thrombocytic and coagulative hemostasis of all examined women. Patients with progressive pregnancy have a considerably lower level of platelets than the patients with miscarriage. The average content of fibrinogen in women with progressive pregnancy is considerably higher than that in the patients in other groups. APTT is positively higher in patients of group A. The average content of SFMC in patients of group A was positively higher. The patients with non-developing pregnancy after IVF showed a considerably lower SFMC content.