Patient: September 8, 2009, pain in left calf after cesarean section, followed by swelling. Hospitalized for 15 days for thrombolysis, taking oral warfarin and herbs. The effect is not obvious, still swollen. How to cure completely, laboratory and examination results: left lower extremity deep vein thrombosis Last hospital visit: Doctor: Recently go to the hospital for venous ultrasound to see the situation, I don’t know to what position the thrombus is blocked, if the patency is not good, then also need to strengthen the treatment. Further eliminate the symptoms. Patient: Recent ultrasound shows: thickening of the inner wall of the iliac vein and femoral vein, the thickest part is about 0.23cm, flocculent and striated slightly strong echogenicity is seen inside, CDFI shows: narrow fine blood flow signal is seen inside it, the measured speed is 0.36cm wide.N vein CDFI shows: slow blood flow inside it, filling is possible. Is it necessary to continue treatment in this case? How to treat? Thank you Doctor: The patency is average, you can intensify the treatment for 20 days to see the effect, which requires intravenous drip medication, plus herbs. Patient: If I go to your hospital, do I need to be hospitalized? Doctor: Usually you don’t need to be hospitalized, you can go back to your local area for medication. Patient: Is it a bad sign that there is some pain in the calf again? Or is it normal? I don’t have time to go to Jinan to see a doctor now, but I want to go back when I’m on vacation, I don’t know if it will be delayed? Doctor: Be careful not to strain too much and reduce standing time. Patient: The color of the two legs is different, the affected limb is dark, red and purple, is it inflammation? Doctor: It is not inflammation. The dark color is caused by poor blood flow in the affected leg. Do not move too much. Elevate the affected limb. Patient: Thank you, Dr. Qin. One more question: I have been taking warfarin for almost three months, but no blood tests have been done in between, and I am taking 3mg per day. Is it necessary to check the four coagulation tests to take warfarin? Then adjust the dosage. Doctor: Blood tests should be done 3-4 weeks for the four coagulation tests to ensure the safety of the medication.