The standard management oral anticoagulant therapy for chronic treatment of venous thromboembolism is with the drug warfarin. Which of the following statement(s) is/are true concerning the administration of warfarin?
A. An important complication of warfarin therapy is skin necrosis in patients with protein C deficiency
B. Warfarin interferes with vitamin K dependent clotting factors II, VII, IX, X
C. For effective anticoagulation the prothrombin time (PT) should be kept at 2 control
D. It is recommended that warfarin be continued for at least one year after initial episode of deep venous thrombosis
Answer:A
The standard management oral anticoagulant therapy for chronic treatment of venous thromboembolism is with the drug warfarin. Which of the following statement(s) is/are true concerning the administration of warfarin?
A. An important complication of warfarin therapy is skin necrosis in patients with protein C deficiency B. Warfarin interferes with vitamin K dependent clotting factors II, VII, IX, X C. For effective anticoagulation the prothrombin time (PT) should be kept at 2 control D. It is recommended that warfarin be continued for at least one year after initial episode of deep venous thrombosis