PMID: 8613614Mar 15, 1996Paper

"Pseudodisappearance" of atrial electrogram during orthodromic tachycardia: new criteria for successful ablation of concealed left-sided accessory pathways

Journal of the American College of Cardiology
J VillacastínJ L Delcán

Abstract

This study sought to analyze two new criteria along with other known predictors of success of radiofrequency ablation. Background. Although the overall success rate of radiofrequency ablation of accessory pathways is high, the individual predictive value of each of the established criteria is low. We prospectively studied the local electrograms obtained before the application of radiofrequency energy in 33 patients with a left-sided concealed accessory pathway successfully ablated. Two new criteria ("pseudodisappearance" during tachycardia of a bipolar atrial electrogram visible during sinus rhythm and the presence of an "atrial notch" in the ascending limb of the unipolar ventricular electrogram during tachycardia) were studied along with other known predictors. Electrograms recorded at a total of 157 sites were analyzed (33 successful applications, 124 failures). Electrogram characteristics that were predictive of success during ablation on the basis of univariate analyses were a pseudodisappearance criterion (p<0.001), the presence of a Kent potential (p<0.005) and the presence of an "atrial notch" (p<0.005). After adjustment for between-patient differences, logistic regression analysis showed that only the "pseudodisappeara...Continue Reading

References

Mar 11, 1990·Pacing and Clinical Electrophysiology : PACE·T PaulA Garson
Nov 1, 1991·Pacing and Clinical Electrophysiology : PACE·M C ChinJ J Langberg
Dec 15, 1991·The American Journal of Cardiology·R A LeatherY H Kim

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Citations

Jan 21, 2012·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Raja SelvarajJayaraman Balachander
May 19, 1998·Pacing and Clinical Electrophysiology : PACE·J BrugadaF Navarro-López
Sep 23, 1998·Pacing and Clinical Electrophysiology : PACE·K SuyamaK Shimomura
Nov 27, 2004·Circulation Journal : Official Journal of the Japanese Circulation Society·Mamoru ManitaDelon Wu
Mar 10, 2000·Journal of Cardiovascular Electrophysiology·M A BarlowA C Skanes

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