6 results
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
PhaseCa++ channels ... Classification: CLASS ... duration - CLASS ... duration - CLASS ... 1C: Strong Blockade
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Classification: CLASS ... duration: - CLASS ... 1C: Strong Blockade ... & Na channels ... Vaughan #Williams #Pharmacology
Class I Antiarrhythmics and their Key Pharmacologic Properties

Class IA = Quinidine, Procainamide, Disopyramide ("Quarter PounDer")
Class IB
Class I Antiarrhythmics ... Properties Class ... Quarter PounDer") Class ... Mayo, Pickle") Class ... decreases) #ClassI
Antiarrhythmics - Sodium Channel Blockers
Subclasses, Mechanisms, Indications, Side Effects
la - Quinidine, Procainamide
lb - Lidocaine, Mexiletine
Ic -
- Strong Medicine ... #Blockers #ClassI ... #Na #cardiology ... #pharmacology # ... table #comparison
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Classification Class ... (Ia, Ib, Ic) - Na ... Widens QRS complex Class ... prolongs PR interval Class ... Classification #Classes
Characteristics of Peripheral and Central Vertigo
PERIPHERAL VERTIGO
 • Onset: Sudden
 • Intensity: Severe initially, often decreasing
and upbeat (fast phase ... toward forehead) in classic ... can be severe in stroke ... Usually little change ... signs #symptoms #comparison