<prompt> Which of the following drugs is not given in dilated cardiomyopathy?Beta blockerCalcium channel blockerSpironolactoneACE inhibitors  <response>: b. Calcium channel blockerRef: Nelsons 20e p 2275Treatment of Dilated Cardiomyopathy:Drugs used include diuretics, ACE inhibitors, angiotensin receptor blockers, digitalis, b-blockers carvedilol or metoprololIn patients presenting with extreme degrees of heart failure or circulatory collapse, intensive care measures are often required, including IV inotropes, diuretics, mechanical ventilatory support - circulatory support, which may include ventricular assist devices, extracorporeal membrane oxygenation ECMO, and ultimately cardiac transplantation.In patients with DCM and atrial or ventricular arrhythmias, specific antiarrhythmic therapy should be instituted. 