2 doctors weighed in:
What are the classes of antiarrhythmic medications?
2 doctors weighed in

Dr. Jason Rubenstein
Internal Medicine - Cardiology
1 doctor agrees
In brief: I, II, III and IV
Class i is divided into ia, ib, and ic.
These are sodium channel blockers. An example from this class would be propafenone. Class ii agents are beta-blockers (like metoprolol). Class iii are potassium channel blockers - for example, amiodarone. Class IV are calcium channel blockers, like diltiazem.

In brief: I, II, III and IV
Class i is divided into ia, ib, and ic.
These are sodium channel blockers. An example from this class would be propafenone. Class ii agents are beta-blockers (like metoprolol). Class iii are potassium channel blockers - for example, amiodarone. Class IV are calcium channel blockers, like diltiazem.
Dr. Jason Rubenstein
Dr. Jason Rubenstein
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