The drug of choice in digitalis-induced ventricular arrhythmias is
Lignocaine
Phenytoin
Quinidine
Procainamide
Lignocaine suppresses ventricular arrhythmias. It acts by blocking the sodium channel in the inactivated and active states. It is less toxic and has a rapid onset of action and sho duration of action. It has no action on A-V nodal conduction velocity. 1st DOC is lidocaine, 2nd DOC is phenytoin Lidocaine is class IB antiarrhythmic Ref: Tripati 8th edition
Cardiovascular system