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Macroreentrant atrial tachycardia detouring the epicardium at the anterior wall of the left atrium
Author(s) -
Miyazawa Satoshi,
Fukamizu Seiji,
Kawamura Iwanari,
Hojo Rintaro
Publication year - 2019
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/jce.13766
Subject(s) - medicine , cardiology , tachycardia , atrial tachycardia , endocardium , atrial fibrillation , pulmonary vein , catheter ablation
A 79‐year‐old woman with a history of pulmonary vein isolation for persistent atrial fibrillation was admitted for recurrence of atrial tachycardia, with a tachycardia cycle length of 236 milliseconds. The ultra–high‐resolution mapping system revealed that tachycardia circuit detouring the epicardium at the anterior wall scar and breaking through to the endocardium below the left atrial appendage. Radiofrequency energy was applied to this site, which successfully terminated the tachycardia. This case suggests that epicardial conduction could occur even at the left atrial anterior wall and identifies a variation in epicardial conduction around the left atrium, which could be a tachycardia circuit.