The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A patient with history of coronary aery disease presents with pulse rate of 48/min and low BP. Patient has decreased myocardial contractility on Echo. Which of these anesthetic agents is contraindicated?   (A) Fentanyl   (B) Etomidate   (C) Ketamine   (D) Dexmedetomidine
['(D) Dexmedetomidine <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Fentanyl \n (B) Etomidate \n (C) Ketamine \n (D) Dexmedetomidine <> possible answers', '  A patient with history of coronary aery disease presents with pulse rate of 48/min and low BP. Patient has decreased myocardial contractility on Echo. Which of these anesthetic agents is contraindicated? <> context@']