<prompt> Which IV anesthetic not cause cardiac depression?EtomidatePropofolMethohexitalThiopentone  <response>: 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 