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Journal Article
Review
Hormonal contraceptives as a risk factor for cerebral venous and sinus thrombosis.
Acta Neurologica Scandinavica 2007 May
This review will focus on recent developments in our understanding of cerebral venous and sinus thrombosis (CVST), as a side effect of combined oral contraceptives (COCs) use. Case-control studies have shown an increased risk of CVST in women who use COCs, especially third-generation contraceptives that contain gestodene or desogestrel. Several studies have indicated that the combination of COCs and thrombophilia greatly increased the risk of CVST, particularly in women with hyperhomocysteinaemia, factor V Leiden and the prothrombin-gene mutation. Women with thrombophilia who developed CVST while taking oral contraceptives should be definitively advised to stop using COCs. These patients should be considered for preventive therapy with low doses of heparin in prothrombotic situations such as bed rest or pregnancy, and the duration of anticoagulation should be considered on a case-by-case basis. Patients may be considered candidates for chronic treatment with antiplatelet agents. The best and most cost-effective screening method for thrombophilia in women who are planning to conceive is selective screening based on the presence of previous personal or family history of either prior extracerebral or cerebral venous thromboembolism events.
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