103 results
Approach to ECGs - VT vs. SVT - Wide Tachycardias
DDx = VT vs. SVT with BBB
All
: - No RS complexes ... - Very broad complexes ... produce a hybrid complex ... onset of the QRS complex ... S-wave - RSR' complexes
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
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
Ventricular Tachycardia - Management Algorithm
Wide Complex Tachycardia: Rate > 100, QRS > 120
DDx: Ventricular tachycardia, SVT
Tachycardia - Management Algorithm ... Wide Complex Tachycardia ... Ventricular tachycardia, SVT ... with aberrancy, SVT ... #cardiology #VT
VT versus SVT with Aberration - Interpretation Cheat Sheet

Features favouring VT
● Absence of typical RBBB or
dissociation (P and QRS complexes ... beats (hybrid complex ... negative (QS) complexes ... Brugada algorithm ... VentricularTachycardia #SVT
Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular

Regular Rhythm - Narrow Complex
Rhythm - Narrow Complex ... Rhythm - Wide Complex ... Rhythm - Narrow Complex ... Rhythm - Wide Complex ... #cardiology
Wide Complex Tachycardia - Differential Diagnosis Algorithm
Irregular
 • Polymorphic VT
    - Torsades
Wide Complex Tachycardia ... Differential Diagnosis Algorithm ... Mimickers - SVT ... Tachycardia - SVT ... #WCT #cardiology
Tachycardia - Differential Diagnosis Framework
Narrow-Complex:
 • Regular: Sinus Tachycardia, Junctional Tachycardia, Atrial Tachycardia, Atrial Flutter, AVRT
Framework Narrow-Complex ... WPW), AVnRT (ie SVT ... block) Regular-Complex ... Antidromic AVRT, SVT ... Differential #Diagnosis #cardiology
Lead aVR on EKG
Lead aVR can provide some unique insight into 5 different conditions:

 - Acute
AVRT in narrow complex ... Differentiating VT ... from SVT with aberrancy ... in wide complex ... #Diagnosis #Cardiology
Supraventricular Tachycardia EKG

Here’s a great ECG case of a 50-year-old lady who presented with palpitations

Her heart
’s a great ECG case ... wide or narrow complex ... see that the QRS complexes ... consistent with SVT ... Electrocardiogram #Cardiology