This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia for Neurosurgery, Subject name: Anaesthesia
[{'content': 'Increased intracranial tension is seen with: \nSelect and explain. \nA. Ketamine, B. Thiopentone, C. Halothane, D. Propofol', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ANSWER: (A) KetamineREF: Morgans clinical anesthesia 3rd edition page 141"Remember always Ketamine increases not only intracranial pressure but all the pressures of the body, like blood pressure, intraocular pressure, and intragastric pressure"Agents that increase intracranial pressure (ICP) can be remembered as Mnemonic SNAKE:* Sevoflurane* Nitrous oxide* Althesin* Ketamine* Enflurane', 'role': 'assistant'}]