This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
[{'content': 'All of the following can be administrated in acute hypeension during labour EXCEPT: \nSelect and explain. \nA. IV Labetatol, B. IV Nitroprusside, C. IV Hydralazine, D. IV Esmolol', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Sodium Nitroprusside can cause severe hypotension. It is a powerful aeriolar and venodilator. It dilates blood vessels due to the release of NO -nitric oxide or EDRF It is contraindicated in eclampsia Sodium nitroprusside, though useful for HTN emergencies, is not suitable for pregnant women. (Ref- Essential of medical pharmacology K D TRIPATHI 8th Edition)', 'role': 'assistant'}]