Introduction
AVNRT, tachycardia
RECURRENCES, AV NODAL REENTRANT TACHYCARDIA, SUPRAVENTRICULAR TACHYCARDIA
AV nodal reentrant tachycardia (AVNRT), the most common type of supraventricular tachycardia, is characterized by tachycardia with a narrow QRS of supraventricular origin, sudden termination, and a heart rate of 150–250 beats/min [Most AVNRT cases can be treated with slow pathway ablation from the right part of the inferoseptal segment [Regarding ablation of atypical AVNRT may be unsuccessful after ablation at the right posterior septum, we hypothesized that patients with atypical AVNRT might have a structural and/or electrophysiological remodeling of the AV nodal tissue, resulting in a superior displacement of slow pathway. Therefore, in this prospective study, we aimed to present an optimal method for ablating atypical AVNRT. Also, we evaluated the efficacy of this technique for preventing recurrences.