This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Anaesthesia
Intracranial pressure is increased by 
Select and explain. 
A. Ether, B. Halothane, C. Ketamine, D. Thiopentone
C: Ketamine
Answer: C: Ketamine 
Explanation: (C) Ketamine # KETAMINE causes an increase in all pressure viz: intracranial pressure intraocular pressure; Blood pressure> It does not cause muscle relaxation> Ketamine induces dissociative anaesthesia profound analgesia, immobility amnesia with light sleep ad feeling of dissociation from ones own body and the surrounding.> Anaesthesia of choice in shock/hypotension: ketamine> Anaesthetic associated with increase in muscle tone: ketamine> Anaesthetic which does not abolish reflexes: ketamine> Anaesthetic of choice in bronchial asthma: Ketamine> Anaesthetic which is associated with emergence delirium and hallucinations : ketamine