Pharmacology Anti-Arrhythmic ec1dc2c3 Class II antiarrhythmics are - A Na+ channel blocker B K+ Channel opner C Beta-blocker D Calcium channel blocker High-Yield Explanation Ans. is 'c' i.e., Beta blocker Vaughan - williams classificationClass I Class II Class III Class IVNa+ channel blockerb - blockerK+ channel blockerCalcium channel blockers