Causes of Tachycardia - Differential Diagnosis Algorithm
Narrow Complex - Regular:
• Sinus tachycardia
• Atrial flutter
• AV nodal reentrant tachycardia
• AV reentrant tachycardia
• Atrial tachycardia
• Junctional tachycardia
Narrow Complex - Irregular:
• Atrial fibrillation
• Multifocal atrial tachycardia
• Atrial flutter with variable conduction
Wide-Complex - Monomorphic - Regular:
• Monomorphic ventricular tachycardia
• Regular SVT with wide QRS
• Regular SVT with aberrancy
• Pacemaker-facilitated
Wide-Complex - Monomorphic - Irregular:
• Irregular SVT with wide QRS
• Irregular SVT with aberrancy
Wide-Complex - Polymorphic:
• Polymorphic ventricular tachycardia
- Torsades de pointes
• Ventricular fibrillation
- Dr. André Mansoor @AndreMansoor - Author of Frameworks for Internal Medicine https://amzn.to/2LmUODZ
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