Open AccessObservation of Atrial Fibrillation Dependent on an Intra-atrial Re-entrant Tachycardia Within the Right Atrium in a Repaired Tetralogy of Fallot
Author(s) -
Aya Miyazaki,
Junya Tomida,
Hiroshi Tsuneyoshi,
Hiroji Uemura
Publication year - 2023
Publication title -
cjc pediatric and congenital heart disease
Language(s) - English
Resource type - Journals
ISSN - 2772-8129
DOI - 10.1016/j.cjcpc.2022.10.004
Subject(s) - cardiology , medicine , tetralogy of fallot , atrial fibrillation , atrial tachycardia , ablation , tachycardia , heart disease , atrium (architecture) , catheter ablation
Atrial fibrillation (AF) can occur predominantly associated with right atrial (RA) lesions in congenital heart disease, particularly when the RA cavity is dilated. RA electrical potentials occasionally appear organized during AF. We clearly mapped such areas circumscribed by an intra-atrial re-entrant circuit during an isoproterenol infusion, in a patient with a repaired tetralogy of Fallot, using an ultrahigh-density mapping system and its beat acceptance criteria function. Ablation of areas inside the re-entrant circuit successfully eliminated the AF. Our experience indicated that a macro-re-entrant tachycardia was a driver as well as a trigger of AF of this right-sided origin.