What are ventricular rates in 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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Answer

In normal hearts, an individual is protected from exceptionally high ventricular rates by the relatively long refractory period of the AV node. In patients with WPW syndrome, however, the AP often has a much shorter antegrade refractory period, allowing much faster transmission of impulses and correspondingly higher rates (may exceed 300 bpm).


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