PICC tubes are typically maintained once 24 hours after placement and once a week thereafter. PICC tube refers to the peripheral venous puncture central venous placement, through the peripheral arm of the vein for puncture, is the catheter directly to the heart of the large veins, can reduce the drug on the blood vessel stimulation.PICC tube is generally suitable for patients who need long-term infusion, but not easy to puncture, as well as need to enter the stimulation of the drug or transfusion of blood patients, etc.. After the patient has the tube placed, the first change of maintenance needs to be 24 hours after the tube is placed. If the wound heals well and there is no oozing of blood, fluid, etc., subsequent maintenance once a week is usually sufficient. However, if there is oozing, redness, swelling, etc., the nurse should be told to carry out maintenance in time. Normally, you should pay attention to the protection of the tube placement site, keep it dry, pay attention to observe the status of the skin around the tube, and notify the healthcare personnel in time if there is any discomfort.