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Atrial Tachycardia Masquerading as Atrial Flutter Following Ablation of the Subeustachian Isthmus
Author(s) -
SEHRA RUCHIR,
COPPESS MARK A.,
ALTEMOSE GREGORY T.,
MILITELLO CLAUDIO A.,
MILLER JOHN M.
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.tb00013.x
Subject(s) - atrial flutter , medicine , atrial tachycardia , cardiology , ablation , reentry , tachycardia , catheter ablation , flutter , p wave , entrainment (biomusicology) , atrial fibrillation , rhythm , engineering , aerodynamics , aerospace engineering
Pseudo‐Atrial Flutter. We report a case of atrial tachycardia masquerading as atrial flutter in a man who had previously undergone catheter ablation for atrial flutter. The recurrent arrhythmia was electrocardiographically almost identical to the prior atrial flutter; at repeat electrophysiologic study, although bidirectional conduction block was observed in the tricuspid annulus‐inferior vena caval isthmus, the atrial arrhythmia was readily initiated. Activation mapping suggested typical atrial flutter, hut entrainment techniques demonstrated intra‐atrial reentry not involving the ablated isthmus. This case illustrates the need to apply entrainment techniques even in cases of apparent “typical” atrial flutter to confirm that putative ablation targets are necessary for tachycardia perpetuation.