Correct option is B
To avoid drug interactions or contamination, a separate IV line should be used for medications when TPN is administered through a central line. Explanation of options:
· (a) ✘ Turning off TPN doesn't prevent incompatibility.
· (b) ✔ Ensures sterility and avoids drug interactions.
· (c) ✘ Flushing helps but doesn't guarantee compatibility.
· (d) ✘ Checking compatibility is important but not sufficient alone.