This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Adrenal Gland, Subject name: Medicine
[{'content': 'Which of the following medications is typically avoided in patients with pheochromocytoma due to the risk of hypeensive crisis? \nSelect and explain. \nA. Promethazine, B. Metoclopramide, C. Haloperidol, D. Ondansetron', 'role': 'user'}, {'content': 'Answer: B \nExplanation: For pheochromocytoma patients, METOCLOPRAMIDE is C/I as it can lead to Hypeensive crisis. The gastroprokinetic agent metoclopramide is known to stimulate catecholamine secretion from pheochromocytomas. Metoclopramide is contraindicated in patients with pheochromocytoma due to the risk of hypeensive crisis. Metoclopramide induced hypeensive crisis can be treated with phentolamine. If the patient has emesis, a serotonin 5-HT3 receptor antagonist should be used. Ondansetron does not have any effect on dopamine or norepinephrine', 'role': 'assistant'}]