What are the PACES/HRS guidelines for electrophysiologic study (EPS) 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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The 2012 Pediatric and Congenital Electrophysiology Society (PACES)/Heart Rhythm Society (HRS) guidelines indicate that more invasive EPS should be considered when the absolute loss of manifest preexcitation cannot be clearly demonstrated. The recommendations include the following [17] :

  • Measurement of the shortest preexcited RR interval during induced atrial fibrillation (AF)
  • Determination of the number and location of accessory pathways (APs)
  • Evaluation of the anterograde and retrograde features of the APs and atrioventricular (AV) node
  • Assessment at multiple cycle lengths of the effective efractory period of the APs and the ventricle

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