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Antiarrhythmic Medications - Vaughan Williams Classification - Summary Table
Class I agents - Sodium Channel Blockersâ €
Class II
Class I agents ... Channel Blockersâ € Class ... agents in this class ... beta blockers.â € Class ... III agents - Potassium
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
: CLASS 1 - Sodium ... duration: - CLASS ... duration - CLASS ... 3 - Potassium Channel ... #Classes #pathophysiology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
: CLASS 1 - Sodium ... duration - CLASS ... duration - CLASS ... & AP duration CLASS ... #Classes #pathophysiology
Angiotensin Receptor Blockers 
Recommended Dose Conversions 

Valsartan 
Irbesartan 
Losartan 
Olmesartan 
Telmisartan 
Candesartan 
Azilsartan 
Eprosartan 

A few
dose, select an equivalent ... another drug in that class ... recalls, this drug class ... for increased potassium ... ARB #Conversion #Table
ANGIOTENSIN II RECEPTOR ANTAGONIST (ARB) DOSING:
TOOL FOR SWITCHING BETWEEN AGENTS IN CANADA
The information provided is intended
antagonist (ARB) class ... blood pressure, potassium ... Conversion #Switching #Equivalent ... #Table
Preoperative Risk Evaluation

Major Pre-Op Questions:
1. Does the patient have any modifiable risk factors that could be
Highest metabolic equivalent ... able to perform ... ASA class If ... event, follow ACC algorithm ... Stable patients