What is the significance of entrainment pacing on 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...
  • Print
Answer

With entrainment pacing from the right ventricular (RV) apex, orthodromic reentrant tachycardia (ORT) will return with a V-A-V response, typically with a short (<115 ms) postpacing interval (PPI)–tachycardia cycle length (TCL) difference (PPI-TCL) if septal in origin. VA intervals remain fixed during SVT, and AV block cannot occur if the AV AP is critical to the circuit.


Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!