Munveer Thind, Martín R Arceluz, Irene Lucena-Padros, Maciej Kubala, Maiwand Mirwais, Weeranun Bode, Maxime Cerantola, Alan Sugrue, Christoffel Van Niekerk, Aaron Vigdor, Neel A Patel, Ahmed B AlSalem, Erica S Zado, Ramanan Kumareswaran, David Lin, Jeffrey S Arkles, Fermin C Garcia, Gustavo S Guandalini, Timothy M Markman, Michael P Riley, Rajat Deo, Robert D Schaller, Saman Nazarian, Sanjay Dixit, Andrew E Epstein, Gregory E Supple, David S Frankel, Cory M Tschabrunn, Pasquale Santangeli, David J Callans, Matthew C Hyman, Francis E Marchlinski
BACKGROUND: Targeting nonpulmonary vein triggers (NPVTs) of atrial fibrillation (AF) after pulmonary vein isolation can be challenging. NPVTs are often single ectopic beats with a surface P-wave obscured by a QRS or T-wave. OBJECTIVES: The goal of this study was to construct an algorithm to regionalize the site of origin of NPVTs using only intracardiac bipolar electrograms from 2 linear decapolar catheters positioned in the postero-lateral right atrium (along the crista terminalis with the distal bipole pair in the superior vena cava) and in the proximal coronary sinus (CS)...
August 16, 2023: JACC. Clinical Electrophysiology