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Narrow Complex Tachycardias (Simplified)

Irregular Narrow Complex Tachycardia:
 1. Atrial fibrillation
	- Usually the correct answer
 2. Multifocal
Narrow Complex Tachycardias ... Narrow Complex Tachycardia ... Sinus tachycardia ... Atrial flutter ... differential #diagnosis #causes
Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
 • Sinus tachycardia
 • Atrial flutter
Causes of Tachycardia ... • Atrial flutter ... • Atrial tachycardia ... • Atrial flutter ... Diagnosis #Algorithm #Causes
Anatomical Differential Diagnosis for Arrhythmias
 • SA node: Sinus bradycardia, Sick Sinus Syndrome (SSS)
 • AV
SA node: Sinus tachycardia ... (PACs), Atrial Flutter ... , Focal Atrial Tachycardia ... AV re-entrant tachycardia ... Differential #Diagnosis #Causes
Causes of Palpitations
 • ARRHYTHMiA 
 • SINUS ARRYTHMIA 
 • ATRIAL FIBRILLATION 
 • ATRIAL
Causes of Palpitations ... FIBRILLATION • ATRIAL FLUTTER ... • ATRIAL TACHYCARDIA ... • VENTRICULAR TACHYCARDIA ... #Palpitations #Causes
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Narrow-Complex Tachycardia ... Possible atrial flutter ... Treat underlying cause ... possible atrial flutter ... Treat underlying cause
Palpitations - Differential Diagnosis Framework

What?
• It is an unpleasant awareness or sensation that the heart is
Paroxysmal AF, atrial flutter ... twitching CARDIAC CAUSES ... Atrial fibrillation/flutter ... • Bradycardia caused ... NON-CARDIAC CAUSES
Hyperthyroidism Overview

Clinical Manifestation of Hyperthyroidism:
 • Fatigue
 • Weight loss
 • Heat intolerance
 • Depression, nervousness
threatening: - Tachycardia ... Hyperreflexia • Tachycardia ... Atrial fibrillation/flutter ... hyperthyroidism #causes
Supraventricular Tachycardias - Pathophysiology
Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle
Supraventricular Tachycardias ... • Atrial Tachycardia ... • Atrial Flutter ... Nodal Reentry Tachycardia ... • AV Reentry Tachycardia
Comparison of Multifocal Atrial Tachycardia, Atrial Fibrillation and Atrial Flutter
Multifocal Atrial Tachycardia - Atrial Rate >
Multifocal Atrial Tachycardia ... Fibrillation and Atrial Flutter ... Multifocal Atrial Tachycardia ... intervals Atrial Flutter ... "Saw tooth" flutter
Tachycardia - Differential Diagnosis and Management - Narrow vs Wide, Regular vs Irregular
Narrow - Regular:
Use P
Tachycardia - Differential ... If see flutter p ... • Atrial Flutter ... If not Flutter P ... SarahFoohey #Tachycardia