This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'After a hypophysectomy, vasopressin is given IM for which of the following reasons? \nSelect and explain. \nA. To treat growth failure, B. To prevent syndrome of inappropriate antidiuretic hormone (SIADH), C. To reduce cerebral edema and lower intracranial pressure, D. To replace antidiuretic hormone (ADH) normally secreted by the pituitary.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: After hypophysectomy or removal of the pituitary gland, the body can’t synthesize ADH.\n\nOption A: Somatropin\xa0or growth hormone, not Vasopressin is used to treat growth failure.\nOption B: SIADH results from excessive ADH secretion.\nOption C: Mannitol\xa0or corticosteroids are used to decrease cerebral edema.', 'role': 'assistant'}]