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Fetal warfarin syndrome is a disorder of the embryo which occurs in a child whose mother took the medication warfarin (brand name: Coumadin) during pregnancy. Resulting abnormalities include low birth weight , slower growth , intellectual disability , deafness , small head size , and malformed bones , cartilage , and joints .
Warfarin (brand name Coumadin) is a commonly prescribed blood thinner both in the inpatient and outpatient hospital settings. In pregnant women, warfarin is contraindicated and should be avoided as it crosses the placental barrier. Additionally, warfarin is listed as Pregnancy Category D, which means it has a risk of harming the fetus. [37]
The study included women admitted to hospital for one or more days for reasons other than delivery or venous thromboembolism. [5] Pregnancy after the age of 35 augments the risk of VTE, as does multigravidity of more than four pregnancies. [2] Pregnancy in itself causes approximately a five-fold increased risk of deep venous thrombosis. [6]
Low molecular weight heparin (LMWH, such as enoxaparin) is generally used as an alternative. [44] Warfarin and LMWH may safely be used in breastfeeding. [44] When women experience recurrent pregnancy loss secondary to thrombophilia, some studies have suggested that low molecular weight heparin reduces the risk of miscarriage.
[52] [53] Warfarin's interference with G1a proteins has also been linked to abnormalities in fetal bone development in mothers who were treated with warfarin during pregnancy. [54] [55] Long-term warfarin and heparin usage have also been linked to osteoporosis. [56] [45] Another potentially severe complication associated with heparin use is ...
Warfarin is indicated for the prophylaxis and treatment of venous thrombosis and its extension, pulmonary embolism; [9] prophylaxis and treatment of thromboembolic complications associated with atrial fibrillation and/or cardiac valve replacement; [9] and reduction in the risk of death, recurrent myocardial infarction, and thromboembolic events such as stroke or systemic embolization after ...
Of the anticoagulants, warfarin (and related coumarins) and heparin are the most commonly used. Warfarin affects the vitamin K-dependent clotting factors (II, VII, IX, X) and protein C and protein S, whereas heparin and related compounds increase the action of antithrombin on thrombin and factor Xa.
Low-molecular-weight heparin (LMWH) is a class of anticoagulant medications. [1] They are used in the prevention of blood clots and, in the treatment of venous thromboembolism (deep vein thrombosis and pulmonary embolism), and the treatment of myocardial infarction.