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Antiarrhythmic Medications - Vaughan Williams Classification - Summary Table
Class I agents - Sodium Channel Blockers⠀
Class II
Antiarrhythmic Medications ... ⠀ Class II agents ... blockers.⠀ Class ... Class IV agents ... BlockersClass
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Antiarrhythmics ... : CLASS 1 - Sodium ... duration: - CLASS ... accpcardprn #Antiarrhythmics ... #Classes #pathophysiology
Class I Antiarrhythmics and their Key Pharmacologic Properties

Class IA = Quinidine, Procainamide, Disopyramide ("Quarter PounDer")
Class IB
Class I Antiarrhythmics ... Properties Class ... Mayo, Pickle") Class ... #Class1 #Antiarrhythmics ... Agents #Cardiology
Antiarrhythmics - Sodium Channel Blockers
Subclasses, Mechanisms, Indications, Side Effects
la - Quinidine, Procainamide
lb - Lidocaine, Mexiletine
Ic -
Antiarrhythmics ... EricsMedicalLectures/ #Antiarrhythmics ... #Blockers #ClassI ... #Na #cardiology ... #pharmacology #
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Antiarrhythmics ... Class I (Ia, Ib ... , Ic) - Na+ Channel ... Widens QRS complex Class ... #Classes #cardiology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Antiarrhythmics ... : CLASS 1 - Sodium ... duration - CLASS ... @accpcardprn #Antiarrhythmics ... Classes #pathophysiology
Clinically Significant Cardiovascular Drug-Drug Interactions With OTC Supplements and Herbal Products
Angiotensin-Converting Enzyme Inhibitors (ACEIs)
 • Night-blooming
tachycardia Calcium Channel ... potential arrhythmias Class ... I Antiarrhythmic ... #pharmacology # ... DDI #table #cardiology