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Semin Thromb Hemost 2003; 29(2): 143-154
DOI: 10.1055/s-2003-38829
Copyright © 2003 by Thieme Medical Publishers, Inc., 333 Seventh Avenue, New York, NY 10001, USA. Tel.: +1(212) 584-4662

Prediction, Prevention, and Treatment of Venous Thromboembolic Disease in Pregnancy

Rainer B. Zotz1 , Andrea Gerhardt2 , Rüdiger E. Scharf2
  • 1Department of Hemostasis and Transfusion Medicine, Heinrich Heine University Medical Center, Düsseldorf, Germany
  • 2Department of Hemostasis and Transfusion Medicine, Heinrich Heine University Medical Center, Düsseldorf, Germany
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Publication History

Publication Date:
23 April 2003 (online)

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ABSTRACT

Pregnancy is recognized as an independent risk factor for venous thromboembolism leading to thromboembolic events, particularly in women with prior venous thrombosis, family history of thrombosis, or additional thrombophilic risk factors. To reduce the incidence of venous thromboembolism in pregnancy and improve outcomes, an individual risk stratification on the basis of probability of thrombosis as a rationale for an individual risk-adapted prophylaxis is required. In women without prior thrombosis, the presence of a heterozygous factor V Leiden or heterozygous G20210A mutation in the prothrombin gene is associated with a pregnancy-associated thrombotic risk of approximately 1 in 400. Thus, in pregnant carriers of either one of these mutations the risk of venous thromboembolism is low. For this reason, routine thrombophilia screening of all pregnant women is not recommended. However, a combination of the two genetic risk factors can increase the risk to a modest level (risk 1 in 25). In women with a single episode of prior thrombosis associated with a transient risk factor (such as surgery or trauma) and no additional genetic risk factor, the probability of a pregnancy-associated thrombosis also appears to be low. In contrast, in women with a prior idiopathic venous thrombosis who carry an additional hereditary risk factor or who have a positive family history of thrombosis, a high risk (> 10%) can be expected, supporting the indication for active antepartum and postpartum heparin prophylaxis. In many cases, the absolute magnitude of risk is unknown or estimated, and recommendations are often empiric.

KEYWORDS

Pregnancy - venous thrombosis - risk factors - therapy - prevention

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