Аннотация:The goal of our work was to study the effect of low-molecular-weight heparin, nadroparin calcium (Fraxiparine), on the haemostasis and the rate of postoperative thrombotic complications in 275 patients with cancer of female reproductive system. It was shown that using of Fraxiparine before surgery and during postoperative period decreases hypercoagulation and the rate of postoperative thrombotic complications.