[Hereditary antithrombin deficiency and pregnancy. Pregnancy course in six women with known hereditary antithrombin deficiency].

Inherited antithrombin (AT) deficiency is a major cause of venous thromboembolism, especially in relation to surgery and pregnancy. We present six AT deficient pregnant women, who successfully delivered seven babies at the Department of Gynaecology/Obstetrics, Aalborg Hospital. From conception, or if possible prior to conception, the women were treated with unfractionated (UFH) or low molecular weight heparin (LMWH) throughout the pregnancy.