<prompt> Digitalis has positive ionotropic effect by the viue of its effects onNaK ATPase pumpNa glucose channelsH K ATPase pumpCalcium pump  <response>: Effects of digitalis on cell biochemistry: sodium pumpinhibition. It is now generally agreed that Na-K adenosine triphosphatase ATPase, a transpo enzyme derived from the sarcolemmal sodium pump, is the primary site at which digitalis exes its effects on the myocardial cell. Refer kDT 6e p497 