Bi‐focal Atrial Tachycardia Mimicking Atrial Fibrillation: Fusion and Interference Between Two Distinct Tachycardias

Irregular tachycardias mimicking atrial fibrillation (AF) have previously been described. We report a case of a 60‐year‐old man with an antiarrhythmic drug‐resistant atrial tachycardia (AT) mimicking AF. The tachycardia consisted of two distinct ATs with interference of one repetitive AT with anothe...

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Bibliographic Details
Published in:Journal of cardiovascular electrophysiology 2007-11, Vol.18 (11), p.1210-1212
Main Authors: EJIMA, KOICHIRO, SHODA, MORIO, TANIZAKI, KOHEI, KASANUKI, HIROSHI
Format: Article
Language:English
Subjects:
atrial fibrillation
Atrial Fibrillation - diagnosis
atrial tachycardia
Catheter Ablation
Diagnosis, Differential
Electrophysiologic Techniques, Cardiac - methods
Follow-Up Studies
Humans
Male
Middle Aged
Tachycardia, Ectopic Atrial - diagnosis
Tachycardia, Ectopic Atrial - surgery
Treatment Outcome
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Description
Summary:Irregular tachycardias mimicking atrial fibrillation (AF) have previously been described. We report a case of a 60‐year‐old man with an antiarrhythmic drug‐resistant atrial tachycardia (AT) mimicking AF. The tachycardia consisted of two distinct ATs with interference of one repetitive AT with another sustained AT. Radiofrequency (RF) ablation of two distinct right atrial foci eliminated the irregular tachycardia. Although catheter‐based pulmonary vein isolation has become a popular therapeutic approach for patients with symptomatic AF, careful evaluation of the intracardiac recordings in the patients undergoing RF ablation for AF is important.
ISSN:1045-3873
1540-8167
DOI:10.1111/j.1540-8167.2007.00839.x