Which action will a nurse take when caring for a patient receiving total parenteral nutrition (TPN)?

When caring for a patient receiving total parenteral nutrition (TPN), maintaining strict aseptic techniques is crucial to prevent infections, especially considering that TPN is delivered via a central venous catheter. Wearing a sterile mask while changing the central venous catheter dressing is an essential practice to safeguard against contamination. The mask helps to limit the exposure of the catheter site to airborne pathogens, which is particularly important given the immunocompromised state that can result from the need for TPN.

This action aligns with the established guidelines for central line maintenance, where maintaining a sterile environment is paramount to prevent catheter-related bloodstream infections. By ensuring that both the nurse and any assistants involved in the dressing change are wearing sterile masks, the risk of introducing pathogens to the catheter site is significantly reduced, promoting patient safety and optimal outcomes during TPN administration.