Journal of cardiovascular electrophysiology
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J. Cardiovasc. Electrophysiol. · Nov 2007
Case ReportsBi-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. ⋯ 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.