Pharmacology General 9ba0653d Digitalis has positive inotropic effect-by the virtue of its effect on: A Na+ K+ ATPase pump B Na Glucose channels C H+K+ ATPase pump D Calcium Pump High-Yield Explanation Digitalis binds selectively to Na+ K+ATPase and inhibits this pump. Thus it increases intracellular Na+ and decreases extrusion of Ca2+