1546 results
Distinguishing Between Benign Early repolarization vs STEMI on EKG
#Diagnosis #Cardiology #ECG #EKG #Repolarization #STEMI #Comparison #Table
Between Benign Early repolarization ... vs STEMI on EKG ... Diagnosis #Cardiology #ECG ... #EKG #Repolarization
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 ... Vaughan Williams Classification ... #Pharmacology #Classification
Major electrocardiogram findings induced by left ventricular hypertrophy (LVH)
An increase in left ventricular mass augments the
alteration in repolarization ... in left atrial depolarization ... LeftVentricular #ECG ... #EKG #Diagnosis
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Vaughan Williams Classification ... prolong AV node repolarization ... interval (delays time repolarization ... prolong AV node repolarization ... #Pharmacology #Classification
Class I Antiarrhythmics and their Key Pharmacologic Properties

Class IA = Quinidine, Procainamide, Disopyramide ("Quarter PounDer")
Class IB
• Slows depolarization ... in wide QRS on EKG ... involved in phase 3 repolarization ... • Prolongs repolarization ... prolonged QT on EKG
ECG characteristics of early repolarization
 - The ST segment elevations are concave and most pronounced in
ECG characteristics ... of early repolarization ... hallmark of early repolarization ... Diagnosis #Cardiology #EKG ... #ECG #Early #Repolarization
T Waves: Benign Early Repolarization vs Hyperacute T Waves vs Peaked T Waves 

BER = Notching
: Benign Early Repolarization ... symmetrically peaked #ECG ... #EKG #cardiology
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Vaughan Williams Classification ... Blockade • Slows depolarization ... Blockade • Slows depolarization ... Blockade • Slows depolarization ... VaughanWilliams #Classification
Hypertrophic Cardiomyopathy (HOCM) - EKG Characteristics
Typical EKG findings may include:
 • Deep and narrow Q waves
Cardiomyopathy (HOCM) - EKG ... Characteristics Typical EKG ... with widespread repolarization ... Cardiomyopathy #HOCM #EKG ... #ecg #clinical