<prompt> The treatment of choice in recurrent venous thrombosis leading to pulmonary embolism despite intensive anticoagulation is:Fibrinolysis treatment with tissue plasminogen activatorPulmonary embolectomyPulmonary thromboendaerectomyInferior vena caval filters  <response>: The two indications for inseion of an IVC filter are 1 active bleeding that precludes anticoagulation and 2 recurrent venous thrombosis despite intensive anticoagulation. Ref: Harrisons Principles of Internal Medicine, 18th Edition, Page 2176. 