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Antiarrhythmic Medications - Vaughan Williams Classification - Summary Table
Class I agents - Sodium Channel Blockers⠀
Class II
Class I agents ... BlockersClass ... are beta blockers ... Blockers Class ... BlockersClass
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
: CLASS 1 - Sodium ... Channel Blockers ... duration: - CLASS ... duration - CLASS ... & AP duration CLASS
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
: CLASS 1 - Sodium ... Channel Blockers ... duration - CLASS ... duration - CLASS ... & AP duration CLASS
Antiarrhythmics - Sodium Channel Blockers
Subclasses, Mechanisms, Indications, Side Effects
la - Quinidine, Procainamide
lb - Lidocaine, Mexiletine
Ic -
Antiarrhythmics - Sodium Channel ... Blockers Subclasses ... Antiarrhythmics #Sodium #Channel ... #Blockers #ClassI ... #pharmacology #table
Class III Antiarrhythmics - Potassium Channel Blockers - Indications and Side Effects
Amiodarone
 • Suppression of VT
Class III Antiarrhythmics ... - Potassium Channel ... Blockers - Indications ... when other drugs are ... #Blockers #pharmacology
Angiotensin Receptor Blockers 
Recommended Dose Conversions 

Valsartan 
Irbesartan 
Losartan 
Olmesartan 
Telmisartan 
Candesartan 
Azilsartan 
Eprosartan 

A few
Angiotensin Receptor Blockers ... another drug in that class ... recalls, this drug class ... initiating an ARB ... #Table #Dosing
Antibiotic classification refers to the categorization of antibiotics based on their chemical structure, mechanism of action,
antibiotics in this class ... antibiotics in this class ... antibiotics in this class ... antibiotic in this class ... antibiotics in this class
In order to better classify heart failure, the American College of Cardiology Foundation and the American
Association functional class ... of the ACC/AHA Classification ... as their status changes ... current symptoms are ... #Stages #Classes
Clinically Significant Cardiovascular Drug-Drug Interactions With OTC Supplements and Herbal Products
Angiotensin-Converting Enzyme Inhibitors (ACEIs)
 • Night-blooming
tachycardia Calcium Channel ... Blockers (CCBs) ... vera, Licorice - Causes ... potential arrhythmias Class ... pharmacology #DDI #table
Preoperative Risk Evaluation

Major Pre-Op Questions:
1. Does the patient have any modifiable risk factors that could be
ASA class If ... event, follow ACC algorithm ... Change in clinical ... ACEi/ARBs - Hold ... if result will change