Question

A nurse is caring for a client who has a central venous access device in place, which of the following routine interventions should the nurse use to prevent lumen occlusion?

1. apply skin securement device to catheter
2. remove the dressing from insertion site slowly and carefully
3. clamp the tubing before removing a syringe from the positive pressure end cap
4. have the client lie flat when changing administration sets or injection caps

Answer 1

To prevent lumen occlusion in a central venous access device, clamping the tubing before removing a syringe from the positive pressure end cap is important to maintain positive pressure and prevent blood backflow, which can cause occlusion. Other critical practices include using aseptic techniques and regular catheter flushing.option 3.

Step-by-step explanation:

To prevent lumen occlusion in a central venous access device, it is important to follow strict protocols designed to maintain catheter patency and minimize infection risks. Among the listed interventions, clamping the tubing before removing a syringe from the positive pressure end cap is a key step.

This action helps to prevent air from entering the system and maintains positive pressure in the lumen, which can help avoid blood backflow into the catheter that could lead to clots and occlusions. Other routine interventions not listed that are crucial for preventing occlusion include using aseptic technique during dressing changes, flushing the catheter regularly with saline or heparin (if indicated), and assessing the catheter and insertion site for signs of infection or other complications.

Ensuring correct securement of the catheter and having the patient in the appropriate position during procedures are important, but these interventions are primarily to prevent catheter dislodgement and to ensure proper pressure dynamics during infusion or aspiration and are not directly associated with preventing lumen occlusion.