Identification of interatrial epicardial connections between the right-sided pulmonary veins and right atrium using coherent map.

ABSTRACT: A 43-year-old man underwent circumferential pulmonary vein isolation (PVI) for persistent atrial fibrillation. Although first-pass circumferential PV antrum ablation was performed, complete PVI was not obtained. A gap map showed the site of earliest activation was the right-sided PV carina, which was the same site of breakthrough on the left atrium map before ablation. Using a coherent map enabled us easily and clearly to evaluate the breakthrough sites. To identify whether the conduction from the right PV carina connected to adjacent structures, an activation map was obtained during pacing from the right PV carina. This revealed that the site of earliest activation was the posterior right atrium (RA) and implied a direct connection between the right-sided PVs and RA. The first radiofreque

SUBMITTER: Wada T 

PROVIDER: S-EPMC9808440 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature