<prompt> All of the following anti-arrhythmic drugs are from class Ic EXCEPT:EncainideHecainideTocainidePropafenone  <response>: Ref: KDT, 6th ed. pg. 511Anti-arrhythmic drugsClassActionsDrugsI- NaNa channel blockers Ia: NaK channel blocking propertyQuinidine, Procainamide, DisopyramideIb: NaK channel opening propertyTocainide, Lidocaine, Phenytoin, MexiletineIc: no effect on K channelFlecainide, Encainide, PropafenoneII-bAntiadrenergic agents b blockersPropranolol, Esmolol, Sotalol is Class III mainlyIII- KAgents widening AP Prolong repolarization and ERPIbutilide, Sotalol, Bretylium, Amiodarone, Dronadarone, DofetilideIV- CaCalcium channel blockersVerapamil, DiltiazemVDrugs with other mechanism of actionsMagnesium DOC in torsades de pointes Atropine: DOC for Bradycardia a and AV Block DigoxinAdenosine: DOC for PSVTNote: Class IA agents also have Class III property; propranolol has Class I action as well; sotalol and bretylium have both class II and class III actions. 