This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Pharmacology), Subject name: Pharmacology
[{'content': 'Which of the following drug is used to prevent acute mountain sickness? \nSelect and explain. \nA. Acetazolamide, B. Dexamethasone, C. Diltiazem, D. Digoxin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. AcetazolamideAcetazolamide is effective in preventing acute mountain sickness (AMS), high altitude pulmonary edema (HAPE), and high altitude cerebral edema (HACE).Mechanism in above pathology:* Counteracts the respiratory alkalosis which occurs during ascent to altitude* Facilitates the excretion of bicarbonate in the urine* Decreases pH of CSF* Decreases CSF formation', 'role': 'assistant'}]