Antiarrhythmia drug classification
Class I: Na+ channel blockers
Ia: Quninidine, procainamide, disopyramide: prolong action potential (QPD)
Ib: Lidocaine, mexilitene, pheytoin: shorten action potential (LMP)
Ic: Flecainaide, morcizine, and propafenone
Class II: ß-blockers: decreases sympathetic stimuli to heart. Propranolol, atenolol, metoprolol, esmolol, acebutolol
Class III: K+ channel blockers: Bretylium, amiodarone, sotalol, ibitulide (BASI), dofetilide.
Class IV: CCB: verapamil, diltazem, nifedipine, amlodipine
Miscellaneous: Na+/K+ - ATPase inhibitors: Adenosine, digoxin.