Why is dopamine prefered over adrenaline in cardiogenic shock?
This because dopamine because it has postive inotropic effect ,
chronotropic effect on the heart ( activate B1 receptrors ). It
overcome hyptension by activation of alpha receptor . it activates
also the dopaminergic receptors in renal and splanchnic arterioles
, thus increase blood flow to the kideny and other viscera . this
protect the kideny in case of cardiogenic shock .Adrenaline did not
provide this protection even may reduce blood supply to these vital
organ. (Dr. A. S. Ali Assocaite prof of pharmacology. creative
pharmasit gate )