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Focal Atrial Tachycardia



Focal atrial tachycardia is a rapid atrial rhythm originating from a single atrial focus.


  • Mechanism

  • Focal atrial tachycardia originates from a single source of micro reentry, most commonly in the right atrium.


  • ECG Findings

  • Narrow complex tachycardia
  • Regular ventricular rhythm
  • Abnormal P wave morphology (e.g. inverted or biphasic) that is consistent
  • An isoelectric baseline (to differentiate from atrial fibrillation or flutter)
  • Diagnosis
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