High-resolution mapping of an aortic sinus cusp for two outflow tract premature ventricular contractions.

ABSTRACT: In catheter ablation for outflow tract premature ventricular contraction (PVC), electrical mapping of the aortic sinus cusp (ASC) provides critical information for identifying the origin of the PVC. The OCTARAY™ (Biosense Webster, Diamond Bar, CA, USA), a multispline 48-polar electrode catheter with TRUEref™ technology, fits the shape of the ASC and enables detailed and prompt high-resolution ASC mapping without inducing PVCs due to mechanical stimulation. We present a case of successful catheter ablation for two similar PVCs from the ASC based on activation and voltage mapping using TRUEref™ technology. High-resolution mapping could be helpful for the visual assessment of the detailed wavefront propagations of PVC.

Learning objective

In catheter ablation for outflow tract premature

SUBMITTER: Tamura Y 

PROVIDER: S-EPMC12432510 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature