Tachycardia

Tachycardia is a topic covered in the Diagnosaurus.

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DDx

Narrow & Regular

  • Sinus tachycardia
  • Atrial flutter
  • AV node re-entry tachycardia (AVNRT)
  • Atrial ventricular re-entry tachycardia (AVRT)
  • Wolff-Parkinson-White syndrome (subset of AVRT)
  • Atrial tachycardia
  • Junctional tachycardia
Narrow & Irregular
  • Atrial fibrillation
  • Frequent premature atrial contractions (PACs)
  • Atrial flutter with variable block
  • Multifocal atrial tachycardia (MAT)
  • Sinus arrhythmia
Wide & Regular
  • Ventricular tachycardia (VT)
  • Supraventricular tachycardia with aberrancy (e.g., pre-existing bundle branch block, rate-related bundle branch block, or WPW)
Wide & Irregular
  • Torsades de pointes
  • Frequent PVCs

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Last updated: December 1, 2014