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According to the U.S. Centers for Disease Control and Prevention, about one-third of patients who have suffered venous thromboembolism have a recurrence within 10 years.

Another expert, Dr. Gregg Fonarow, a professor of cardiology at the University of California, Los Angeles, said that "after venous thromboembolism, it is recommended that patients be treated with anticoagulation therapy for six to 12 months. However, the benefits and risks of extended treatment with new oral anticoagulant agents are unclear. Given the highly favorable benefit/risk ratio, the extended treatment approach may represent an important therapeutic advance."

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For more information on venous thromboembolism , visit the U.S. National Library of Medicine.

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