This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthesia For Special Situations, Subject name: Anaesthesia
[{'content': 'An unconscious pt. of head injury comes in casualty. Examination shows raised intracranial pressure. Which anesthetic agent is contra- indicated : \nSelect and explain. \nA. Propofol, B. Ketamine, C. Etomidate, D. Thiopentone sodium', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e. Ketamine Ketamine causes increase in all pressure of body fluids -Increased ICTIncreased IOTIncreased B.P.Therefore it is not used in raised ICT and IOT as it may increase the pressure to morbid levels.Other frequently asked questions about KetamineThe injection of a therapeutic dose of Ketamine produces dissociative anaesthesia*.Ketamine is a phencyclidine analogue, it produces Hallucinations*Ketamine produces profound analgesia*.Ketamine is used as anaesthetic where maintenance of blood pressure is important e.g.in states of shock*.", 'role': 'assistant'}]