Semin Thromb Hemost 2007; 33(6): 597-603
DOI: 10.1055/s-2007-985756
Copyright © 2007 by Thieme Medical Publishers, Inc., 333 Seventh Avenue, New York, NY 10001, USA.

Do Thrombophilias Cause Placenta-Mediated Pregnancy Complications?

Marc A. Rodger1 , 2 , 3 , Michael Paidas4
  • 1Thrombosis Program, Division of Hematology, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
  • 2Clinical Epidemiology Unit, Ottawa Health Research Institute, The Ottawa Hospital, Ottawa, Ottawa, Ontario, Canada
  • 3Department of Obstetrics and Gynecology, University of Ottawa, Ottawa, Ontario, Canada
  • 4Yale Women and Children's Center for Blood Disorders, Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, New Haven, Connecticut
Further Information

Publication History

Publication Date:
04 September 2007 (online)

ABSTRACT

There has been an sudden increase of knowledge about thrombophilias in the last decade as new thrombophilias are discovered and new associations are explored. It is now evident that thrombophilias are common and that the clinical consequences of having a thrombophilia do not appear to be limited to venous thromboembolism. The placenta-mediated pregnancy complications are also common (more than one in six pregnancies are affected) and include pregnancy loss, preeclampsia, placental abruption, and intrauterine growth restriction. These complications as a whole are the leading causes of maternal and neonatal morbidity in the developed world. Evidence has emerged to suggest that thrombophilic women may be at higher risk of developing these placenta-mediated pregnancy complications. However, is this evidence mature enough to claim that a causal association is proven? Is the evidence strong enough to recommend anticoagulant prophylaxis? We suggest that causality is not yet proven and that the data to support management with anticoagulant prophylaxis in thrombophilic pregnancies is too immature to consider this an established intervention.

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Dr. Marc A Rodger

Division of Hematology, The Ottawa Hospital, General Campus

501 Smyth Rd., Ottawa, Ontario, Canada K1H 8L6

Email: mrodger@ohri.ca