Utilizing a diagonal line of conduction block at the right atrium-superior vena cava junction for SVC isolation significantly reduced the number of radiofrequency deliveries compared to conventional methods (4.2 vs. 10.2; P<0.0001).
Observational (n=113)
No
Does a novel high-resolution mapping system identify conduction patterns that facilitate SVC isolation with fewer radiofrequency deliveries in patients with AF?
A diagonal line of block at the RA-SVC junction is present in about half of AF patients and can be utilized to achieve SVC isolation with fewer radiofrequency applications.
Absolute Event Rate: 4.2% vs 10.2%
p-value: p=<0.0001
BACKGROUND: The aim of this study was to categorize the conduction patterns between the right atrium (RA) and the superior vena cava (SVC), and to determine the ideal procedure for SVC isolation using a novel high-resolution mapping system. METHODS AND RESULTS: ; P<0.0001). CONCLUSIONS: We found that approximately half of patients with AF had a diagonal line of block at the RA-SVC junction that could be utilized to isolate the SVC with fewer radiofrequency deliveries.
Tanaka et al. (Wed,) conducted a observational in Atrial fibrillation (n=113). SVC isolation guided by high-resolution mapping of conduction block vs. Conventional SVC isolation (Non-block group) was evaluated on Number of radiofrequency deliveries for SVC isolation (p=<0.0001). Utilizing a diagonal line of conduction block at the right atrium-superior vena cava junction for SVC isolation significantly reduced the number of radiofrequency deliveries compared to conventional methods (4.2 vs. 10.2; P<0.0001).