Functional Substrate Mapping Using Atrial Decrement Evoked Potentials to Predict Critical Isthmus of Atrial Tachycardia

YORGUN H., ÇÖTELİ C., KERESTECİ A. H., Obeidat M., AYTEMİR K.

PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY, 2025 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Publication Date: 2025
  • Doi Number: 10.1111/pace.15205
  • Journal Name: PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, CINAHL, SportDiscus
  • Hacettepe University Affiliated: Yes

Abstract

Recent reports highlighted the role of functional substrate mapping during sinus rhythm to predict the critical isthmus of left atrial tachycardias (AT). In this article, we reported a case of a 63-year-old female patient who was admitted with recurrent AT after pulmonary vein isolation. Although sinus rhythm revealed normal left atrium voltages, programmed stimulation with extrastimulus revealed decrement evoked potentials with prolongation in local electrograms on the anterior wall. Critical isthmus of AT was colocalized with deceleration zones during functional substrate mapping. Radiofrequency ablation successfully terminated AT.