What is the role of activation mapping in the diagnosis of 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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Activation mapping using three-dimensional (3D) electroanatomical mapping systems (CARTO, En-Site) may improve pathway localization, particularly when the AP is anteroseptal or midseptal and concern for AV block during RF ablation is present.

Typically, one should ablate on the side being mapped. If mapping the earliest A, ablate in the atrium via transseptal access if necessary). If mapping the earliest V antegrade, perform ablation via a retrograde aortic approach, if on the left side.

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