SVT: Differential Diagnosis

DDx

Differential diagnosis for Supraventricular Tachycardias

Irregularly Irregular Rhythm

  1. Atrial Fibrillation
  2. Atrial Flutter with variable block
  3. Multifocal atrial tachycardias (MAT)
  4. Sinus tachycardia with frequent premature atrial complexes (PACs)
  5. Ectopic atrial tachycardia (EAT) with variable block.

 

Regular Rhythm

  • Atrial Tachycardia
  • Atrioventricular reentrant tachycardia (AVRT) e.g. Wolff-Parkinson-White Syndrome
  • Atrioventricular Nodal Reentry Tachycardia (AVNRT)
  • Paroxysmal Supraventricular Tachycardia (PSVT)

 

Check out this classification of SVT differential diagnosis on Medscape.

 

Classification of SVT by location of origin and Rhythm

    Regular   Irregularly Irregular
  Atrial
  • Sinus tachycardia
  • Atrial tachycardia
  • Atrial flutter
  • Inappropriate sinus tachycardia
  • Sinus node re-entrant tachycardia
  • Atrial fibrillation
  • Atrial flutter with variable block
  • Multifocal atrial tachycardia (MAT)
  • Sinus tachycardia with frequent premature atrial complexes (PACs)
  • Ectopic atrial tachycardia (EAT) with variable block.
  Atrioventricular
  • Atrioventricular re-entry tachycardia (AVRT)
  • AV nodal re-entry tachycardia (AVNRT)
  • Automatic junctional tachycardia
  

 

 

 

 

 

 

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