title: Inherited thrombophilia and pregnancy complications revisited.
abstract: Inherited thrombophilias are not yet established as a cause of placenta-mediated pregnancy complications, such as fetal growth restriction, preeclampsia, abruption, and pregnancy loss. An inherited thrombophilia is only one of many factors that lead to development of these diseases and is unlikely to be the unique factor that should drive management in subsequent pregnancies. The paucity of evidence for benefit, coupled with a small potential for harm, suggests that low molecular weight heparin should be considered an experimental drug for these indications until data from controlled trials are published. At present, women with a history of placenta-mediated pregnancy complications, with or without a thrombophilia, should be followed closely without routine prophylactic low molecular weight heparin other than for prevention of venous thromboembolism in limited circumstances.
authors.affiliation: Thrombosis Program, Division of Hematology, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada. mrodger@ohri.ca
authors.forename: Marc A
authors.initials: MA
authors.lastname: Rodger
authors.forename: Michael
authors.initials: M
authors.lastname: Paidas
authors.forename: Claire
authors.initials: C
authors.lastname: McLintock
authors.forename: McLintock
authors.initials: M
authors.lastname: Claire
authors.forename: Saskia
authors.initials: S
authors.lastname: Middeldorp
authors.forename: Susan
authors.initials: S
authors.lastname: Kahn
authors.forename: Ida
authors.initials: I
authors.lastname: Martinelli
authors.forename: William
authors.initials: W
authors.lastname: Hague
authors.forename: Karen
authors.initials: K
authors.lastname: Rosene Montella
authors.forename: Ian
authors.initials: I
authors.lastname: Greer
mesh_terms: D000026:Abortion, Habitual / Q000503:physiopathology; D005260:Female; D006493:Heparin / Q000627:therapeutic use; D006495:Heparin, Low-Molecular-Weight / Q000627:therapeutic use; D006801:Humans; D010920:Placenta / Q000503:physiopathology*; D021041:Placental Circulation / Q000502:physiology*; D011247:Pregnancy; D011250:Pregnancy Complications, Hematologic / Q000503:physiopathology*; D019851:Thrombophilia / Q000503:physiopathology*
chemical_list: D006495:Heparin, Low-Molecular-Weight; D006493:Heparin