Visualization of the electrophysiologically defined junction between the superior vena cava and right atrium

This study consisted of 15 consecutive AF patients (11 males, age 59 ±10 years). A 3D mapping catheter was positioned in the SVC‐RA junction region while delivering a single extra‐stimulus from the right atrial appendage (RAA), to discriminate the RA and SVC potentials. The electrophysiological SVC‐RA junction was defined as the most proximal points where the SVC potentials were recorded, which were tagged on the 3D mapping system around the SVC‐RA junction, where radiofrequency energy applications were applied.ResultsAround the SVC ‐RA junction, 9±2 points were tagged on the 3D mapping system. The highest and lowest SVC‐RA junction points were located on the anterior wall and posterior wall, respectively. The difference in the level between the highest and lowest SVC‐RA junction points was 16.2±6.3 mm. A successful SVC isolation was obtained in all patients without any complications. The total duration of the RF applications was 183±123 sec per patient.This article is protected by copyright. All rights reserved.
Source: Journal of Cardiovascular Electrophysiology - Category: Cardiology Authors: Tags: ORIGINAL ARTICLES Source Type: research