• T Hervig, K Haram, and P M Sandset.
• Blodbanken, Haukeland Sykehus, Bergen.
• Tidsskr. Nor. Laegeforen. 1998 Oct 30; 118 (26): 4093-7.

AbstractThe main risk factors for deep vein thrombosis in pregnancy and after delivery are preeclampsia, operative delivery, adiposity, prolonged bed rest, and haemostatic defects (antithrombin, protein C and protein S deficiencies), activated protein C resistance, lupus anticoagulant/antiphospholipid antibodies. Hyperhomocystinaemia is a general risk factor for deep vein thrombosis. The clinical diagnosis of deep vein thrombosis is difficult and must be confirmed by imaging techniques. Positive D-dimer has high sensitivity, but low specificity to detect acute thrombosis. Standard treatment is unfractionated heparin intravenously for 7-10 days, followed by subcutaneous injections. Anticoagulant treatment is prolonged for 6-12 weeks after delivery, usually with warfarin. During pregnancies associated with high risk of thrombosis, low molecular heparin prophylaxis is given during pregnancy and 6-12 weeks after delivery. Thrombosis in pregnancy must be followed by adequate investigation for an underlying thrombotic predisposition.

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