Final answer:
The nurse should prioritize teaching the patient to increase oral fluids after a CT scan with contrast.
Step-by-step explanation:
The nurse should prioritize post-procedure teaching for a patient with a hearing disorder who just underwent a CT scan with contrast by instructing them to increase oral fluids. This is because contrast material used in CT scans can put stress on the kidneys, and increasing oral fluids can help flush out the contrast material from the body and reduce the risk of kidney damage. It is important for the patient to stay hydrated.