Atrial Functional Substrate Mapping Predicts the Critical Isthmus of Left Atrial Localized Re-entrant Tachycardia; A Case Report

Functional Mapping Predicts Critical Isthmus in LA Re-entry

Authors

  • Can Menemencioglu Hacettepe University, Faculty of Medicine, Department of Cardiology, Ankara, Turkey
  • Ahmet Haydar Keresteci Hacettepe University, Faculty of Medicine, Department of Cardiology, Ankara, Turkey
  • Cem Cöteli Hacettepe University, Faculty of Medicine, Department of Cardiology, Ankara, Turkey
  • Hikmet Yorgun Hacettepe University, Faculty of Medicine, Department of Cardiology, Ankara, Turkey
  • Kudret Aytemir Hacettepe University, Faculty of Medicine, Department of Cardiology, Ankara, Turkey

Keywords:

atrial fibrillation, atrial tachycardia, functional substrate mapping

Abstract

A 79-year-old woman with persistent atrial fibrillation developed de-novo atrial tachycardia originating from the anterior left atrial wall. Functional substrate mapping (ILAM) during sinus rhythm identified slow conduction zones (deceleration zones) that matched the critical isthmus of the induced tachycardia. Targeted ablation at this site successfully terminated the arrhythmia. This case illustrates the utility of ILAM in identifying ablation targets in patients with atrial scarring.

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Published

2025-01-01

Issue

Vol. 3 No. 1 (2025)

Section

Case reports

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License

Copyright (c) 2025 Can Menemencioglu, Ahmet Haydar Keresteci, Cem Cöteli, Hikmet Yorgun, Kudret Aytemir

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

The journal's content is licensed under the Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.