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Deep T Wave Inversions - Differential Normal variants A. Juvenile T wave pattern
Early repolarization ... or ventricular pacing ... Differential #Diagnosis #Causes
Causes of ST Segment Elevation - Differential Diagnosis Framework STEMI: • Upsloping convex STE: "Pardee's sign" +
Causes of ST Segment ... • Ventricular Pacing ... : - Pacing spike ... Right ventricle pacing ... voltage Other Causes
Action potential in cardiomyocytes The action potential in typical cardiomyocytes is composed of 5 phases (0-4), beginning
phase Phase 0: Depolarization ... Phase 1: Early repolarization ... phase Phase 3: Repolarization ... Myocytes #Phases #Depolarization ... #Repolarization
Antiarrhythmics Pharmacology Summary Cardiac Conduction Phases: Phase 0 - Ventricular Depolarization: • Na+ channels open leading to a
Phase I - Initial Repolarization ... Delays ventricular repolarization ... - Ventricular Repolarization ... prolong AV node repolarization ... Classification #Classes
Temporary / External Pacing • Transvenous & epicardial pacing are temporary methods of supporting brady- &
Temporary / External Pacing ... Transvenous & epicardial pacing ... External cardiac pacing ... required to trigger depolarization ... to identify a depolarization
Antiarrhythmics - Vaughan Williams Classification: CLASS 1 - Sodium Channel Blockers: • MOA: Block fast Na+ channels
and magnitude of depolarization ... prolong AV node repolarization ... interval (delays time repolarization ... prolong AV node repolarization ... Classification #Classes
Action Potential: Depolarization and repolarization of a neuron #ActionPotential #Depolarization #Repolarization #Neuron #Neurology #Pathophysiology
Action Potential: Depolarization ... and repolarization ... ActionPotential #Depolarization ... #Repolarization
Class I Antiarrhythmics and their Key Pharmacologic Properties Class IA = Quinidine, Procainamide, Disopyramide ("Quarter PounDer") Class IB
for the rapid depolarization ... • Slows depolarization ... involved in phase 3 repolarization ... • Prolongs repolarization
Hyperkalemia shortens repolarization; changes in the T wave provide the earliest clues to hyperpotassemia. - At
Hyperkalemia shortens repolarization ... provide the earliest clues ... 6.0 mEq/L, rapid repolarization ... causes peaked T ... in conduction causes
Major electrocardiogram findings induced by left ventricular hypertrophy (LVH) An increase in left ventricular mass augments the
alteration in repolarization ... in left atrial depolarization
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