Characterization of Atrioventricular Nodal Behavior and Ventricular Response During Atrial Fibrillation Before and After a Selective Slow-Pathway Ablation

Abstract

In patients undergoing a slow-pathway ablation for control of AVNRT, selective slow-pathway ablation may cause a significant decrease in the ventricular rate during AF. These effects are primarily due to the prolongation of AV nodal conduction properties and refractory period of the residual AV nodal transmission system. These findings may have important therapeutic implications for the nonpharmacological treatment of AF, particularly in patients with underlying dual AV nodal physiology.