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Little is known about the exact boundaries of the reentrant circuit in the slow-slow form of atrioventricular nodal reentrant tachycardia (AVNRT).The purpose of this study was to examine the tachycardia circuit in the slow-slow form of AVNRT.Single extrastimuli were delivered during the slow-slow form of AVNRT at 10 sites along the right interatrial septum: superior portion of the His-bundle (HB)...
Pulmonary vein (PV) ablation plays an important role in atrial fibrillation (AF) therapy but suffers from a limited mechanistic understanding of PV arrhythmogenicity. Rapid focal activation has been suggested, but some evidence points to underlying reentry.This study was performed to evaluate how the electrophysiological properties of PVs may make them a site for reentry and to analyze specifically...
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