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Histopathologic Background for Resistance to Conventional Catheter Ablation of Common Atrial Flutter
Author(s) -
IGAWA OSAMU,
ADACHI MASAMITSU,
HISATOME ICHIRO,
MATSUI YUMIE
Publication year - 2004
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 - 10.1046/j.1540-8167.2004.03447.x
Subject(s) - medicine , ablation , catheter ablation , atrial flutter , cardiology , catheter , pulmonary vein , atrial fibrillation , blood flow , radiofrequency ablation , radiology
Histopathologic examination of the cavotricuspid isthmus in which a large‐tip catheter was necessary to achieve conduction block is presented. No thickened myocardium or prominent trabeculation was observed on the ablation line. A small cardiac vein extending through the isthmus across the ablation scar was detected. The remaining myocardial cells were distributed along the small cardiac vein. It is possible that the luminal blood flow of the small cardiac vein protects the surrounding atrial muscle from effective delivery of radiofrequency energy. (J Cardiovasc Electrophysiol, Vol. 15, pp. 829‐832, July 2004)