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 Vol. 18; no. 11; pp. 1210 - 1212
Main Authors:	EJIMA, KOICHIRO, SHODA, MORIO, TANIZAKI, KOHEI, KASANUKI, HIROSHI
Format:	Journal Article
Language:	English
Published:	Malden, USA Blackwell Publishing Inc 01-11-2007
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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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.
Bibliography:	Manuscript received 24 January 2007; Revised manuscript received 23 February 2007; Accepted for publication 14 March 2007. ObjectType-Case Study-2 SourceType-Scholarly Journals-1 ObjectType-Feature-4 content type line 23 ObjectType-Report-1 ObjectType-Article-3
ISSN:	1045-3873 1540-8167
DOI:	10.1111/j.1540-8167.2007.00839.x