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Complete interatrial block in a left‐atrial dependent atrioventricular node
Author(s) -
Ramos Jiménez Javier,
Marco del Castillo Álvaro,
Rodríguez Muñoz Daniel,
Borrego Bernabé Luis,
Fontenla Adolfo,
López Gil María
Publication year - 2021
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.15138
Subject(s) - medicine , atrial flutter , cardiology , atrioventricular node , ablation , sinus rhythm , atrioventricular block , interatrial septum , radiofrequency ablation , left atrium , atrial fibrillation , tachycardia
Abstract Introduction : A middle‐age woman underwent an electrophysiologic study due to recurrent atypical atrial flutter. Methods and Result : Radiofrequency ablation of cavotricuspid isthmus and anterior mitral line was performed. During energy delivery on the anterior left atrial wall, interatrial dissociation and complete block of the sinus impulse to the atrioventricular (AV) node was observed. AV node activation became dependent on a subsidiary left atrial rhythm. Conclusion : Anatomical location of intra and inter‐atrial connections must be taken into account when performing extensive ablation procedures, specially in cases with prior cardiac surgeries.