This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2019, Subject name: Pharmacology
Which IV anesthetic not cause cardiac depression? 
Select and explain. 
A. Etomidate, B. Propofol, C. Methohexital, D. Thiopentone
A: Etomidate
Answer: A: Etomidate 
Explanation: Etomidate:- Preferred inducing agent in cardiovascular surgery Major disadvantage is adrenal suppression Thiopental:- Ultrasho acting barbiturate with high lipid solubility. Potent anaesthetic but weak analgesic. Methohexital & Thiopental - Histamine release