This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intravenous Anesthetic Agents, Subject name: Anaesthesia
[{'content': 'Intravenous anaesthetic agent of choice in status epilepticus \nSelect and explain. \nA. Propofol, B. Thiopentone, C. Ketamine, D. Etomidate', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Propofol produces coical EEG changes. Propofol appears to possess profound anticonvulsant propeies. CBF ICP CMRO2 Seizure Thiopentone ||| ||| ||| ||| Ketamine || || | | Halothane || || | | Nitrous oxide | | | | Previously thiopentone was used nowerdays propofol is used.', 'role': 'assistant'}]