<prompt> Which of the following induction agent may cause adrenal coex suppression?PropofolKetamineEtomidateThiopentione  <response>: Etomidate is an induction anaesthetic which cause suppression of production of steroids from adrenals. It is therefore not suitable for continuous intravenous use. It has brief duration of action 5-10min and produce little cardiovascular and respiratory depression. It produce prominent motor restlessness and rigidity. Use of etomidate should be restricted to clinical situations in which its hemodynamic stability offers a distinctive advantage over the other available induction drugs e.g. elderly outpatients with clinically significant coronary aery or cerebrovascular disease. Ref: Essentials of Medical Pharmacology By K D Tripathi, 5th Edition, Pages 342-4 