Identification of Critical Slowing of Conduction Using Unipolar Atrial Voltage and Fractionation Mapping

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Abstract

Background: Ablation strategies targeting fractionated or low-voltage potentials have been widely used in patients with persistent types of atrial fibrillation (AF). However, recent studies have questioned their role in effectively representing sites of conduction slowing, and thus arrhythmogenic substrates. Objectives: The authors studied the relationship between local conduction velocity (CV) and the occurrence of fractionated and/or low-voltage potentials in order to identify areas with critically slowing of conduction. Methods: Intraoperative epicardial mapping was performed during sinus rhythm. Unipolar potentials with an amplitude
Original languageEnglish
Pages (from-to)1971-1981
Number of pages11
JournalJACC: Clinical Electrophysiology
Volume10
Issue number9
DOIs
Publication statusPublished - 1 Sept 2024

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