Pituitary Disorders: Acromegaly and SIADH/DI · NCLEX Exam

If a patient’s urine output is 300 mL/hour and serum sodium rises to 150 mEq/L on post-op day 2 after transsphenoidal surgery for a pituitary adenoma, what does the nurse suspect?

  1. Early postoperative SIADH
  2. Postoperative diabetes insipidus
  3. Acute adrenal crisis
  4. Underlying chronic kidney disease
Show answer and explanation

Correct answer: Postoperative diabetes insipidus

High urine output and rising sodium post pituitary surgery suggest DI due to ADH deficiency rather than SIADH, which causes low urine output and low sodium.

Difficulty: Medium Question 18 of 20

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