How is Lown-Ganong-Levine (LGL) syndrome differentiated from Wolff-Parkinson-White (WPW) syndrome?

Updated: Jan 08, 2017
  • Author: Christopher R Ellis, MD, FACC, FHRS; Chief Editor: Mikhael F El-Chami, MD  more...
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In LGL syndrome, patients have a short PR interval and SVT but no delta wave. This is typically caused by an atrio-Hisian pathway leading to accelerated AV conduction, but not causing paroxysmal SVT. In patients with LGL syndrome who have an atrio-Hisian tract, the QRS complex remains normal and the short atrio-Hisian interval remains fixed during atrial pacing at rapid rates.

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