Digitalis has positive Inotropic effect-by the viue of its effect on:: (A) Na+K+ ATPase pump, (B) Na Glucose channels, (C) H+K+ ATPase pump, (D) Calcium pump
Answer is A. Ref:KDT 6/e p496 Digitalis is used clinically because it exes a positive inotropic effect and because it slows transmission in the AV node in patients with supraventricular tachyarrhythmias. The positive inotropic effect is due to inhibition of the sodium/potassium pump at the outer cell membrane.