<prompt> An unconcious patient of head injury comes in casualty. On examination shows raised intracranial pressure. Which anesthetic agent is contraindicated:ThiopentonePropofolKetamineEtomidate  <response>: 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 ICTIOT Hypeension as it may increase the pressure to morbid levels. 