The electrophysiological effects of digitalis on Purkinje
fibres include the following except:
A. Enhancement of resting membrane potential
B. Decrease in the slope of phase-0 depolarization
C. Increase in the rate of phase-4 depolarization
D. Abbreviation of action potential duration
fibres include the following except:
A. Enhancement of resting membrane potential
B. Decrease in the slope of phase-0 depolarization
C. Increase in the rate of phase-4 depolarization
D. Abbreviation of action potential duration