Elimination of AV Nodal Reentrant Tachycardia with 2:1 VA Block by Posteroseptal Ablation

Abstract

AV nodal reentry capable of VA block during tachycardia was successfully eliminated using a posteroseptal ablation pulse delivered well away from the site of earliest atrial activation during tachycardia. A possible explanation is that the arrhythmia represented typical AV nodal reentrant tachycardia with transient intra-atrial conduction block during tachycardia.