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Antiarrhythmic Medications - Vaughan Williams Classification - Summary Table
Class I agents - Sodium Channel Blockers⠀
Class II
Class I agents ... Channel Blockers⠀ Class ... agents in this class ... beta blockers.⠀ Class ... Channel Blockers Class
Antiarrhythmics - Sodium Channel Blockers
Subclasses, Mechanisms, Indications, Side Effects
la - Quinidine, Procainamide
lb - Lidocaine, Mexiletine
Ic -
Indications, Side Effects ... Eric Strong @DrEricStrong ... - Strong Medicine ... Channel #Blockers #ClassI ... #pharmacology #table
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
: CLASS 1 - Sodium ... channel blocking effects ... duration: - CLASS ... duration - CLASS ... 1C: Strong Blockade
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
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
: CLASS 1 - Sodium ... channel blocking effects ... duration - CLASS ... duration - CLASS ... 1C: Strong Blockade
Shock - Differential Diagnosis by Classification
Reflex Syncope 
 - Vasovagal syncope
   • Prolonged standing
Differential Diagnosis by Classification ... Medication side effect ... Medication side effect ... Eric Strong https ... #Table #Causes
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
- Genetic defects ... Eric Strong https ... Low #Magnesium #Table ... #Classification ... #Causes #Workup
Preoperative Risk Evaluation

Major Pre-Op Questions:
1. Does the patient have any modifiable risk factors that could be
metabolic equivalent able ... ASA class If ... event, follow ACC algorithm ... Stable patients ... • <6mo since stroke
Essential Thrombocythemia (ET)
ET is a chronic myeloproliferative neoplasm. Most cases are related to mutations that affect
Essential Thrombocythemia ... Most cases are related ... mutations that affect ... • Treatment algorithms ... EricsMedicalLectures/ #Essential