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Atypical Atrial Flutter Involving the Isthmus Between the Right Pulmonary Veins and Fossa Ovalis
Author(s) -
TAI CHINGTAI,
LIN YUNGKUO,
CHEN SHIHANN
Publication year - 2001
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1046/j.1460-9592.2001.t01-1-00384.x
Subject(s) - fossa ovalis , medicine , atrial flutter , cardiology , flutter , interatrial septum , clockwise , anatomy , ablation , atrial fibrillation , geometry , rotation (mathematics) , left atrium , mathematics , engineering , aerodynamics , aerospace engineering
TAI, C.‐T., et al. : Atypical Atrial Flutter Involving the Isthmus Between the Right Pulmonary Veins and Fossa Ovalis. Typical atrial flutter, counterclockwise or clockwise movement around the tricuspid annulus, has been well studied. However, the reentrant circuits in atypical atrial flutter are not well defined. A patient without a prior history of cardiac surgery who presented with incessant atypical atrial flutter is described. Activation mapping demonstrated a circular movement around the fossa ovalis in the interatrial septum. Entrainment mapping demonstrated a protected isthmus between the right pulmonary veins and the fossa ovalis. Radiofrequency ablation of this isthmus terminated atrial flutter without recurrence during the follow‐up period.