Right atrial appendage tachycardia: a rare cause of tachycardia induced cardiomyopathy with successful radiofrequency ablation using the 3D mapping system

We report the case of a 40-year-old patient with incessant supraventricular tachycardia [SVT]. As this SVT was resistant to medical therapy and was complicated by severe LV dysfunction and cardiogenic shock, the patient was referred for EPS [electrophysiologic study] and ablation. EPS and successful ablation of the right atrial appendage [RAA] tachycardia were performed by means of a 3D mapping system NavX [St. Jude Medical, St. Paul, MN, USA] with complete resolution of symptoms and normalization of LV function, as evaluated at three-month follow-up examination.