Which of the following groups of drugs is used as inotropic agents?
  1. Nicorandil, dobutamine, carvedilol
  2. Verapamil, digitoxin, isosorbide dinitrate
  3. Diltiazem, metoprolol, amrinone
  4. Digoxin, dopamine, milrinone
Explanation
Answer- D - Digoxin, dopamine and milrinone are used as inotropic drugs. The classes of agents included in the inotropic group of drugs include cardiac glycosides such as digitalis, digitoxin, and digoxin; phosphodiesterase inhibitors such as amrinone and milrinone; and sympathomimetics such as dopamine, dobutamine, isoproterenol, metaraminol, epinephrine and norepinephrine.
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