Patient: examination and laboratory tests: superficial vein thrombosis of both upper extremities, superficial thrombophlebitis of both upper extremities Treatment: first anticoagulation with Speedy Bilin, then switch to Bactrim History: swelling and pain in upper extremities after three days of drip Which drug should I use now? Thank you! Shanghai Huashan Hospital, Department of Vascular Surgery, Yu Bo: Hello, sorry to write back to you so late, the occurrence of superficial vein thrombophlebitis, most and intravenous injection of drugs related, if high concentrations of chemotherapy drugs, intravenous nutrition drugs, high concentrations of potassium chloride and other fluids can cause superficial phlebitis, and induce the occurrence of superficial vein thrombosis, the current treatment of drugs for deep vein thrombosis treatment, may not be appropriate, it is recommended again Supplementation of highly concentrated intravenous drugs can be changed to internal jugular or femoral vein placement, PICC, PORT, etc. to avoid phlebitis in upper limbs as well as venous thrombosis, and treatment advocates local application of Xylitol, hot compresses after the acute phase, and oral aspirin and Xylitol. Thank you for your trust in me!