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: Anaesthesia
[{'content': 'An unconcious patient of head injury comes in casualty. On examination shows raised intracranial pressure. Which anesthetic agent is contraindicated: \nSelect and explain. \nA. Thiopentone, B. Propofol, C. Ketamine, D. Etomidate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Ketamine Ketamine causes increase in all pressure i.e. intracranial, intraocular, intragastric and intravascular (Blood) pressure. So it is not used in raised ICT/IOT & Hypeension as it may increase the pressure to morbid levels.', 'role': 'assistant'}]