1.When to start anticoagulation therapy for deep vein thrombosis? Anticoagulation therapy is usually started as soon as deep vein thrombosis is detected. Anticoagulation is the basis of treatment for DVT. 2.Does deep vein thrombosis need thrombolytic therapy? Generally, thrombolytic therapy can be considered in the acute phase (within 2 weeks of onset). In the chronic phase, anticoagulation is the main treatment. 3.What are the drugs for anticoagulation therapy? The most commonly used drug is warfarin, but new anticoagulant drugs such as rivaroxaban are also available. The injections used in hospital are heparin and low molecular heparin. 4.Can aspirin and clopidogrel be used to “anticoagulate” deep vein thrombosis? This is a big misunderstanding, aspirin and clopidogrel are antiplatelet drugs, which are suitable for the treatment of arterial thrombosis. Deep vein thrombosis is mainly anticoagulated by heparin and warfarin. 5.What do I need to pay attention to when using warfarin therapy? Warfarin anticoagulation therapy must monitor the coagulation function and adjust the dosage by the coagulation index. If there is gum bleeding, skin mucous membrane, urine bleeding, etc., should promptly consult a doctor. 6.What are the indicators of warfarin monitoring? During taking warfarin, monitor the coagulation function to keep the International Normalized Ratio (INR) value between 2,0 and 3,0. Too high is prone to bleeding, too low is unable to achieve the anticoagulation effect.