27 results
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Narrow Complex ... tachycardia Narrow Complex ... conduction Wide-Complex ... aberrancy Wide-Complex ... #Causes #cardiology
Approach to ECGs - VT vs. SVT - Wide Tachycardias
DDx = VT vs. SVT with BBB
All
VT: - No RS complexes ... - Very broad complexes ... - a sinus and ventricular ... produce a hybrid complex ... VT #VTach #SVT #Comparison
Ventricular Fibrillation
• Completely disorganized 
• Immediate cessation of cardiac output, no associated pulse 
• No discernible
Ventricular Fibrillation ... • Completely disorganized ... discernible P waves, QRS complexes ... #Fibrillation # ... VFib #Diagnosis #Cardiology
Morphological Criteria for Discriminating Ventricular Tachycardia from Supraventricular Tachycardia with Aberration

Source Article: Wide Complex Tachycardia –
Discriminating Ventricular ... Article: Wide Complex ... Distinguishing #Criteria #Cardiology ... #Differences #Comparison ... #Brugada #Algorithm
VT versus SVT with Aberration - Interpretation Cheat Sheet

Features favouring VT
● Absence of typical RBBB or
dissociation (P and QRS complexes ... beats (hybrid complex ... sinus beat and a ventricular ... negative (QS) complexes ... Brugada algorithm
Tachycardia - Differential Diagnosis Framework
Narrow-Complex:
 • Regular: Sinus Tachycardia, Junctional Tachycardia, Atrial Tachycardia, Atrial Flutter, AVRT
Framework Narrow-Complex ... Irregular: Atrial Fibrillation ... block) Regular-Complex ... : • Ventricular ... Differential #Diagnosis #cardiology
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
Narrow Complex Tachycardias ... Irregular Narrow Complex ... Atrial fibrillation ... Regular Narrow Complex ... differential #diagnosis #causes
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
bpm) - Narrow Complex ... WPW) - Narrow Complex ... Tachycardia - Wide Complex ... aberrancy - Wide Complex ... #causes
Classic Digoxin-Associated Arrhythmias
 • Atrial fibrillation with an unusually slow ventricular response
 • Atrial Fibrillation with
Arrhythmias • Atrial fibrillation ... unusually slow ventricular ... with Complete Heart ... Bidirectional Ventricular ... Arrhythmias #diagnosis #cardiology
Ventricular Tachycardia - Management Algorithm
Wide Complex Tachycardia: Rate > 100, QRS > 120
DDx: Ventricular tachycardia, SVT
Ventricular Tachycardia ... - Management Algorithm ... Wide Complex Tachycardia ... VTach #Management #Algorithm ... #cardiology #VT