Final answer:
Nothing else should be infused through the same port as TPN to avoid interactions and ensure sterility and compatibility. A dedicated line for TPN is required to prevent complications.
Step-by-step explanation:
When administering total parenteral nutrition (TPN), it is generally recommended that nothing else should be infused through the same port. TPN solutions are highly concentrated and require a dedicated line to prevent interactions and complications that could arise from other substances mixing with the TPN. It's critical to maintain sterility and compatibility of the line to avoid infections or precipitations within the catheter. Only health professionals who are trained in TPN management should handle the TPN infusion, and they will follow strict protocols to ensure patient safety.