Cardiovascular Pharmacology, Muscle Physiology, and Neurobiology Study Guide

Class IA Antiarrhythmics

A subcategory of Class I sodium ($Na^+$) channel blockers that includes Procainamide, Disopyramide, Amiodarone, and Quinidine.

Class IB Antiarrhythmics

A subcategory of Class I sodium ($Na^+$) channel blockers that includes Mexiletine, Lidocaine, and Tocainide.

Class IC Antiarrhythmics

A subcategory of Class I sodium ($Na^+$) channel blockers that includes Flecainide, Encainide, and Propafenone.

Class II Antiarrhythmics

Beta blockers used as antiarrhythmic agents, including Metroprolol, Atenolol, Propranolol, Timolol, and Esmolol.

Class III Antiarrhythmics

Potassium ($K^+$) channel blockers that include Sotaolol, Amiodarone, Bretylium, and Ibutilide.

Class IV Antiarrhythmics

Calcium ($Ca^{2+}$) channel blockers that include Diltiazem and Verapamil.

Diagnostic Criteria for Myocardial Infarction (MI)

Requires the presence of at least two of the following criteria: (1) a history of prolonged chest discomfort or anginal equivalent