What are the classic electrocardiogram (ECG) findings associated with 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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Classic ECG findings that are associated with WPW syndrome include the following:

  • Presence of a short PR interval (<120 ms)
  • A wide QRS complex longer than 120 ms with a slurred onset of the QRS waveform, termed a delta wave, in the early part of QRS
  • Secondary ST-T wave changes (see the image below)
Classic Wolff-Parkinson-White electrocardiogram wi Classic Wolff-Parkinson-White electrocardiogram with short PR, QRS >120 ms, and delta wave.

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