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ECG Basics - Atrial Rhythms #Cardiology #MedStudent #EKG #Atrial #SVT #Comparison #Table #AFib #AFlutter #MAT #WAP
ECG Basics - Atrial ... Rhythms #Cardiology ... #MedStudent #EKG ... #Atrial #SVT #Comparison ... #Table #AFib #AFlutter
Tachycardia - Differential Diagnosis Framework
Narrow-Complex:
 • Regular: Sinus Tachycardia, Junctional Tachycardia, Atrial Tachycardia, Atrial Flutter, AVRT
, Atrial Tachycardia ... , Atrial Flutter ... Fibrillation, Multifocal ... (MAT), Atrial Flutter ... #cardiology #wide
Supraventricular Tachycardias - Pathophysiology
Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
through SA Node, Atrium ... • Atrial Tachycardia ... • Atrial Flutter ... Pathophysiology #SVT ... #diagnosis #cardiology
Multifocal Atrial Tachycardia (MAT)
• At least 3 different P wave morphologies: 
• Rate 100-180
• Irregular 
Etiology
Multifocal Atrial ... #Atrial #Tachycardia ... #MAT #Cardiology ... #Diagnosis #ECG ... #EKG #Management
Multifocal Atrial Tachycardia (MAT) on EKG
 • Heart rate > 100 bpm (usually 100-150 bpm)
 •
Multifocal Atrial ... ) on EKG • Heart ... #Atrial #Tachycardia ... #diagnosis #cardiology ... #EKG #ECG #Electrocardiogram
Classic Digoxin-Associated Arrhythmias
 • Atrial fibrillation with an unusually slow ventricular response
 • Atrial Fibrillation with
Tachycardia with ... :1 AV Block • Bidirectional ... #Arrhythmias #diagnosis ... #cardiology #ecg ... #ekg #electrocardiogram
Comparison of Multifocal Atrial Tachycardia, Atrial Fibrillation and Atrial Flutter
Multifocal Atrial Tachycardia - Atrial Rate >
Atrial Tachycardia ... Multifocal Atrial ... Tachycardia - Atrial ... #Comparison #Diagnosis ... #Cardiology #Electrocardiogram
Tachyarrhythmia Framework - Differential Diagnosis
 • Narrow QRS - Regular Rhythm: Sinus tachycardia, AVNRT, Orthodromic AVRT,
- Differential Diagnosis ... Tachycardia, Atrial ... AV block, Multifocal ... atrial tachycardia ... #cardiology
Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
Multifocal Atrial ... Atrial flutter ... "PSVT" (atrioventricular ... #differential #diagnosis ... #causes #cardiology
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Atrial flutter ... fibrillation • Multifocal ... atrial tachycardia ... • Atrial flutter ... Algorithm #Causes #cardiology