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': 'Which of the following anaesthetic agents causes a rise in the Intracranial pressure – \nSelect and explain. \nA. Sevoflurane, B. Thiopentone sodium, C. Lignocaine, D. Propofol', 'role': 'user'}, {'content': 'Answer: A \nExplanation: All inhalational agents increase ICT.\nAmongst intravenous agents only ketamine increases ICT. Propofol, etomidate, and barbiturates (thiopentone, methexitone) decrease ICT.\nLidocaine decreases ICT.', 'role': 'assistant'}]