In a patient given a cardiac glycoside, which of the followings is/are important effects of the drug on the heart? A: Decreased atrioventricular conduction velocity B: Increased intracellular calcium C: Increased ectopic automaticity D: Increased force of contraction

Which of the following arrhythmias can not be treated with Lidocaine?() A: ventricular fibrillation B: premature ventricualr contraction caused by AMI C: supraventricular tachycardia D: premature ventricualr contraction E: ventricular arrhythmia induced by cardiac glycoside intoxication