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Electrophysiologic Study and Radiofrequency Catheter Ablation of Isthmus‐Independent Atrial Flutter
Author(s) -
LAI LINGPING,
LIN JIUNNLEE,
TSENG CHUENDEN,
STEPHEN HUANG SHOEI K.
Publication year - 1999
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.1540-8167.1999.tb00249.x
Subject(s) - atrial flutter , medicine , cardiology , atrial tachycardia , catheter ablation , ablation , tachycardia , radiofrequency ablation , radiofrequency catheter ablation , flutter , p wave , reentry , diastole , atrial fibrillation , anesthesia , blood pressure , engineering , aerodynamics , aerospace engineering
Isthmus‐Independent Atrial Flutter. Introduction : We report the electrophysiologic study and radiofrequency catheter ablation of isthmus‐independent atrial flutter in 2 patients. The isthmus‐independent atrial flutter in these 2 patients had similar ECG and electrophysiologic findings. Both were reproducibly induced by rapid atrial pacing. The atrial activation sequence and entrainment study proved that these atrial flutters were not isthmus‐dependent. A high‐right atrial site was identified as the critical site of the slow conduction zone of the tachycardia in both. This site showed double potentials and mid‐diastolic potentials. Radiofrequency catheter ablation at this site successfully eliminated the isthmus‐independent atrial flutter in both patients.