This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthesia, Subject name: Pharmacology
A patient with ruptured spleen is taken for laparotomy. His blood pressure is 80/50 and heart rate is 125/min. Induction agent of choice for this patient is: 
Select and explain. 
A. Sodium Thiopentone, B. Fentanyl, C. Ketamine, D. Halothane
C: Ketamine
Answer: C: Ketamine 
Explanation: Ans. (C) Ketamine(Ref: Goodman and Gilman 12th/e p538-539)Ketamine increases all pressures (blood pressure, intracranial tension, intraocular pressure) in the body. It is therefore intravenous anesthetic of choice for shock (increases blood pressure).