All are catecholamines EXCEPT: (A) Dopamine, (B) Epinephrine, (C) Noradrenaline, (D) Dobutamine
Answer is D. (Dobutamine): (124-KDT 7th edition)DOBUTAMINE - ("Cardiac stimulant") A derivative of dopamine, but not a D1 or D2 receptor agonist, though it acts on both alpha and beta adrenergic receptorsIt is used as an inotropic agent in pump failure accompanying MI, cardiac surgery, and for short term management of severe CHF. It is less arrhythmogenic adrenalineCatecholamines -1. Noradrenaline 2. Adrenaline 3. Dopamine