Electrophysiological Effects of Catheter Ablation of Inferior Vena Cava–Tricuspid Annulus Isthmus in Common Atrial Flutter

Abstract

The present study provides evidence that the mechanism of successful AFI ablation targeting the IVC-TA isthmus is local bidirectional conduction block. This change can be used as a new and complementary electrophysiological end point for the procedure. AFI recurrences are associated with failure to achieve a permanent block.