Final answer:
Total parenteral nutrition (TPN) is administered through a short catheter in the arm to help with wound healing in patients unable to tolerate enteral feedings. The bag and tubing for TPN should be changed every 24 hours to minimize infection risk. Monitoring electrolyte levels and blood sugar is important as they may be affected by TPN.
Step-by-step explanation:
When a patient with third degree burns is unable to tolerate enteral feedings, they may be prescribed total parenteral nutrition (TPN), which is administered through a short catheter in the arm. TPN provides the necessary nutrients for wound healing and tissue repair. The bag and tubing for TPN are typically changed every 24 hours to minimize the risk of infection. It is important to monitor electrolyte levels and blood sugar while on TPN, as these may be affected by the nutrition provided.