Class II antiarrhythmics are -: (A) Na+ channel blocker, (B) K+ Channel opner, (C) Beta-blocker, (D) Calcium channel blocker
Answer is C. Ans. is 'c' i.e., Beta blocker Vaughan - williams classificationClass I Class II Class III Class IVNa+ channel blockerb - blockerK+ channel blockerCalcium channel blockers