Manuscript received 24 January 2007; Revised manuscript received 23 February 2007; Accepted for publication 14 March 2007.
Bi-focal Atrial Tachycardia Mimicking Atrial Fibrillation: Fusion and Interference Between Two Distinct Tachycardias
Article first published online: 14 MAY 2007
Journal of Cardiovascular Electrophysiology
Volume 18, Issue 11, pages 1210–1212, November 2007
How to Cite
EJIMA, K., SHODA, M., TANIZAKI, K. and KASANUKI, H. (2007), Bi-focal Atrial Tachycardia Mimicking Atrial Fibrillation: Fusion and Interference Between Two Distinct Tachycardias. Journal of Cardiovascular Electrophysiology, 18: 1210–1212. doi: 10.1111/j.1540-8167.2007.00839.x
- Issue published online: 18 OCT 2007
- Article first published online: 14 MAY 2007
- atrial fibrillation;
- atrial tachycardia;
- catheter ablation
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.