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Antiarrhythmic Medications - Vaughan Williams Classification - Summary Table
Class I agents - Sodium Channel Blockers⠀
Class II
Class I agents ... ⠀ Class II agents ... are beta blockers ... Class IV agents ... #pharmacology #
Antiarrhythmics - Sodium Channel Blockers
Subclasses, Mechanisms, Indications, Side Effects
la - Quinidine, Procainamide
lb - Lidocaine, Mexiletine
Ic -
Antiarrhythmics ... Sodium Channel Blockers ... #ClassI #Na #cardiology ... #pharmacology # ... table #comparison
Antiarrhythmic Medication Table

#Antiarrhythmic #Medications #Table #Classification #Classes #Cardiology #Pharmacology
Antiarrhythmic Medication ... Table #Antiarrhythmic ... #Medications #Table ... Classification #Classes ... #Cardiology #Pharmacology
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Classification: CLASS ... duration: - CLASS ... duration - CLASS ... 2 - Beta Blockers ... Vaughan #Williams #Pharmacology
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Classification Class ... Widens QRS complex Class ... II - Beta Receptor ... prolongs PR interval Class ... #cardiology #pharmacology
Antiarrhythmic Drug Classes 
IA: "Police Department Questions 
IB: Liquored Man 
IC: For Peeing, 
Ill: After Drinking
Classes IA: " ... Propafenone III: (Beta ... Blockers) - not ... #Drug #Classes ... #Pharmacology #Mnemonic
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Classification: CLASS ... duration - CLASS ... duration - CLASS ... & AP duration CLASS ... 2 - Beta Blockers
Class III Antiarrhythmics - Potassium Channel Blockers - Indications and Side Effects
Amiodarone
 • Suppression of VT
Class III Antiarrhythmics ... Potassium Channel Blockers ... #Antiarrhythmics ... #pharmacology # ... cardiology
Clinically Significant Cardiovascular Drug-Drug Interactions With OTC Supplements and Herbal Products
Angiotensin-Converting Enzyme Inhibitors (ACEIs)
 • Night-blooming
increased bleed risk Beta-Blockers ... Decreases effects of beta-blockers ... potential arrhythmias Class ... I Antiarrhythmic ... #DDI #table #cardiology
Diagnosis and Management of Achalasia - ACG Guidelines

Who to suspect?
 • Patients presenting with progressive dysphagia
barium or the classic ... esophageal manometry (HRM ... Botulinum toxin • Pharmacologic ... Calcium channel blockers ... Anticholinergics, Beta-adrenergic