1. Medical needs: The best time to remove the catheter depends on the specific medical needs of the patient. If the catheter is no longer needed, such as liquid infusion has been completed, or other treatment methods can replace the central venous catheter, it can be removed.
2. Patient's condition: The best time to remove the catheter also needs to consider the overall situation of the patient. If the patient's condition is stable and there is no special need to continue using the catheter, it can be removed.
3. Safety: Ensure safety when removing the catheter. Will be carried out under the guidance of medical professionals, follow the correct demolition operation and use aseptic technology. Central vein is a kind of medical instrument, which is used to deliver drugs, liquids or nutrients to patients or take blood samples from patients during medical treatment. This is achieved by inserting a catheter into a large blood vessel in the body (such as subclavian vein, internal jugular vein or femoral vein).