Which action is not appropriate immediately post-transsphenoidal hypophysectomy?

• A. Lower the head of the bed
• B. Obtain a culture of the drainage
• C. Test the drainage for glucose
• D. Continue to observe the drainage

Answer: (A)

After transsphenoidal hypophysectomy, keeping the head of the bed elevated is essential to reduce intracranial pressure and minimize the risk of CSF leakage through the surgical site. Lowering the head of the bed would raise venous pressure in the head and could push CSF out of the repair, increasing the chance of a CSF leak, infection, or wound complications. So lowering the head right after surgery is not appropriate.

To monitor for a CSF leak, testing the drainage for glucose is helpful because CSF contains glucose while typical nasal secretions do not; a positive glucose test supports a CSF leak. It’s also important to continue observing the drainage for changes in volume, clarity, or color. Culturing the drainage isn’t routinely needed unless infection is suspected, so it isn’t the primary action to take immediately after surgery.