Cycle length-dependent repolarization changes during atrial fibrillation in the Brugada syndrome
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Updated: Sep 25, 2026

High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation
Published on: July 29, 2011
Manlio F Márquez1, Gustavo Medrano, Robert Frank
1Department of Electrocardiography and Cardiac Electrophysiology, Instituto Nacional de Cardiología "Ignacio Chávez," Funsalud Mexico City, Mexico.
Abstract:
This is a case report of a patient with Brugada syndrome who developed paroxysmal atrial fibrillation. During the episode, beat-to-beat changes in ventricular repolarization were observed. These changes were a paradoxical ST-segment alteration after a short-coupled ventricular beat. These findings, not reported before, may be helpful for the diagnosis of this syndrome.
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