What is the success rate for RF ablation in the treatment 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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Answer

Success rates for RF catheter ablation exceed 90%. Anteroseptal or midseptal pathways have lower success rates due to difficulty achieving a safe lesion formation near the AV node and His bundle. In experienced operators’ hands, the success rate should still exceed 90%, but may come with a 5-10% rate of AV block, usually leading to permanent pacemaker implantation.

Posteroseptal pathways are expected to have a more than 90% success rate as well, with little risk of injury to the AV node in experienced hands. Occasionally, during ablation of the slow pathway of the AV node for AVNRT, a right posteroseptal pathway may also be ablated, as they are typically in close proximity.


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