This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia, Subject name: Pharmacology
[{'content': 'Which IV anesthetic does not cause cardiac depression \nSelect and explain. \nA. Etomidate, B. Ketamine, C. Methohexital, D. Thiopentone', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Etomidate:- * Cardiovascular stability after induction is a major advantage of Etomidate in contrast to Propofol or Barbiturates. * Induction doses of Etomidate typically produces: no change/small increase in hea rate; little or no decrease in blood pressure or cardiac output. Etomidate has little effect on coronary perfusion pressure while reducing myocardial O2 consumption. * It is a preferred choice of induction anesthetic in patients prone to hypotenstion or with low cardiac reserve. Ref:- Goodman & Gilman Pharmacological Basis of Therapeutics 13th Ed; Pg num:- 391', 'role': 'assistant'}]