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Morphological Criteria for Discriminating Ventricular Tachycardia from Supraventricular Tachycardia with Aberration

Source Article: Wide Complex Tachycardia –
Supraventricular Tachycardia ... with Aberration ... : Wide Complex Tachycardia ... #Aberration #Aberrancy ... Electrocardiogram #VTach #SVT
Ventricular Tachycardia - Management Algorithm
Wide Complex Tachycardia: Rate > 100, QRS > 120
DDx: Ventricular tachycardia, SVT
Ventricular Tachycardia ... Wide Complex Tachycardia ... DDx: Ventricular tachycardia ... , SVT with aberrancy ... , SVT iso Na channel
Supraventricular Tachycardias - Pathophysiology
Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
Supraventricular Tachycardias ... • Atrial Tachycardia ... Nodal Reentry Tachycardia ... • AV Reentry Tachycardia ... Pathophysiology #SVT
Tachycardia - Differential Diagnosis Framework
Narrow-Complex:
 • Regular: Sinus Tachycardia, Junctional Tachycardia, Atrial Tachycardia, Atrial Flutter, AVRT
Tachycardia - Differential ... WPW), AVnRT (ie SVT ... Antidromic AVRT, SVT ... Irregular: Polymorphic VT ... Any irregular SVT
Wide Complex Tachycardia - Differential Diagnosis Algorithm
Irregular
 • Polymorphic VT
    - Torsades
Wide Complex Tachycardia ... Mimickers - SVT ... - V-Paced Tachycardia ... - SVT with ... #WideComplex #Tachycardia
VT versus SVT with Aberration - Interpretation Cheat Sheet

Features favouring VT
● Absence of typical RBBB or
VT versus SVT with ... Aberration - Interpretation ... Features favouring VT ... VentricularTachycardia #SVT ... #Aberration #Aberrancy
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
Narrow Complex Tachycardias ... Narrow Complex Tachycardia ... Narrow Complex Tachycardia ... Sinus tachycardia ... "PSVT" (atrioventricular
Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular

Regular Rhythm - Narrow Complex
Tachycardia - Differential ... Narrow Complex Tachycardia ... : • ST vs SVT ... • HyperK vs VT ... > SVT+conduction
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Causes of Tachycardia ... • Regular SVT ... QRS • Regular SVT ... • Irregular SVT ... • Irregular SVT
Supraventricular tachycardia (SVT) is an abnormally fast heart rhythm arising from improper electrical activity in upper
Supraventricular tachycardia ... (SVT) is an abnormally ... supraventricular tachycardia ... (PSVT), atrial ... Cardiology #EKG #SVT