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Electrophysiologic Characteristics and Ablation of an Atypical Atrial Flutter in the Right Atrium
Author(s) -
CHANG KUANCHENG,
LIN YUCHIN,
CHOU HSIANGTAI,
HUNG JUISUNG
Publication year - 2000
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/j.1540-8167.2000.tb01804.x
Subject(s) - atrial flutter , medicine , ablation , inferior vena cava , cardiology , flutter , radiofrequency ablation , right atrium , atrium (architecture) , catheter ablation , reentry , atrial fibrillation , anatomy , engineering , aerodynamics , aerospace engineering
Ablation of Atypical Atrial Flutter. Subeustachian isthmus‐dependent typical atrial flutter has been well studied. We demonstrate a case with atypical atrial fiutter involving only the base of the right atrium around the inferior vena cava. Entrainment pacing and mapping studies documented a distinct circuit traversing the subeustachian isthmus, propagating through the posterobasal right atrium, and skirting the inferior vena cava. Successful radiofrequency ablation of the arrhythmia was accomplished by creating a linear lesion at the subeustachian isthmus. Mapping of the inferior vena cava region and the demonstration of concealed entrainment are essential steps in establishing the mechanism of the atypical atrial flutter.