Hamostaseologie 2022; 42(05): 320-329
DOI: 10.1055/a-1841-0399
Review Article

Management of Antithrombin Deficiency in Pregnancy

Christina Hart
1   Department of Haematology and Oncology, University Hospital Regensburg, Regensburg, Germany
Hannelore Rott
2   Gerinnungszentrum Rhein/Ruhr, Duisburg, Germany
Susanne Heimerl
3   Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Regensburg, Germany
Birgit Linnemann
4   Division of Angiology, University Hospital Regensburg - University Center of Vascular Medicine, Regensburg, Bavaria, Germany
› Author Affiliations


Antithrombin (AT) deficiency is a high-risk thrombophilia and a rare condition. The risk of venous thromboembolism (VTE) is increased in AT-deficient women during pregnancy and the postpartum period and is especially high in women with a prior history of VTE. A thorough assessment of VTE risk is recommended in pregnant AT-deficient women, comprising the degree and type of AT deficiency, genetic mutations, personal and family history, and additional preexisting or pregnancy-specific risk factors. Due to a lack of adequate study data, there is limited guidance on the management of AT deficiency in pregnancy, including the need for prophylactic anticoagulation, the appropriate dose of low-molecular-weight heparin (LMWH), and the role of AT substitution. LMWH is the medication of choice for the pharmacological prophylaxis and treatment of VTE in pregnancy. Patients with a history of VTE should receive full-dose LMWH during pregnancy and the postpartum period. AT concentrates are a treatment option when anticoagulation is withheld in potentially high-risk events such as childbirth, bleeding, or surgery and in cases of acute VTE despite the use of therapeutic dose anticoagulation. Women with AT deficiency should be counseled at specialized centers for coagulation disorders or vascular medicine, and close cooperation between obstetricians and anesthesiologists is warranted before delivery and during the peripartum period.

Publication History

Received: 11 February 2022

Accepted: 02 May 2022

Article published online:
02 November 2022

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