Tachymyopathy Due to Atrial Tachycardia With Two Mutually Dependent Foci: A Case Report

Introduction: Multifocal atrial tachycardia is a supraventricular tachycardia caused by multiple arrhythmogenic sites in the atrium. We reported a unique pattern of bifocal atrial tachycardia originating from the left atrium. Case Presentation: A 57-year-old female diagnosed with atrial tachycardia was referred to our center with incessant arrhythmia. The electrophysiological study was performed. The arrhythmia had two different atrial activation sequence .The arrhythmia was disappeared with ablation of the one focus. Discussion: The patient underwent successful ablation of the first arrhythmia’s focus. The second arrhythmia’s pattern with eccentric atrial activation was eliminated with ablation of the first focus. The presence of two interdependent atrial foci during atrial tachycardia was the unique feature in this case, which to the best of my knowledge has not been reported earlier.