Abnormal Cardiac Conduction: Supraventricular Tachycardia

 

Abnormal cardiac conduction can occur in many ways. For example, in this diagram:

  • The red dots follow the normal conduction pathway.
  • The yellow dot represents conduction via an abnormal "accessory" pathway back toward the AV node. Typically, impulses travelling these abnormal pathways restimulate the atria and/or ventricles and cause arrythmias.
  • The abnormal EKG tracing shown here represents a supraventricular tachycardia.

Return to Mechanisms of PSVT


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