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Table 1 Risk factors for venous thromboembolism[2],[16]-[19]

From: Treatment options for venous thromboembolism: lessons learnt from clinical trials

Factor V Leiden Prothrombin G20210A
Antithrombin deficiency Prothrombin C deficiency
Family history of venous thromboembolism Prothrombin S deficiency
Hyperhomocysteinaemia Sickle cell trait
Acquired, non-transient
Increased age Spinal cord injury
Obesity Prior venous thromboembolism
Chronic medical illness Central venous lines
Cancer Transvenous pacemaker
Antiphospholipid antibodies Neurological disease with leg paresis
Heparin-induced thrombocytopenia
Myeloproliferative disorders
Acquired, transient
Surgery Medications, including
Trauma hormonal contraceptives,
Fractures hormone therapy,
Immobilization chemotherapy drugs,
Pregnancy and childbirth epoietin-alpha and
Red blood cell transfusion darbepoietin-alpha