Key result
High-resolution OCTARAY mapping guides successful ablation of dual outflow tract PVCs from the aortic cusp.
Why the study?
Mapping the aortic sinus cusp to identify the origin of outflow tract premature ventricular contractions is critical but can be challenging with conventional electrode catheters.
Does high-resolution mapping with the OCTARAY catheter facilitate the successful ablation of outflow tract premature ventricular contractions from the aortic sinus cusp?
Case Report (n=1)
No
Does high-resolution mapping with the OCTARAY catheter facilitate the successful ablation of outflow tract premature ventricular contractions from the aortic sinus cusp?
Answers are grounded in this paper and cite their sources.
High-resolution mapping with the OCTARAY catheter is a feasible method for detailing complex wavefront propagations and guiding successful ablation of outflow tract PVCs within the aortic sinus cusp.
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 ventricular contraction (PVC), mapping the aortic sinus cusp is useful to identify the origin; however, it is sometimes challenging with a conventional electrode catheter. High-resolution mapping using OCTARAY™ might be helpful for detailed assessment of outflow tract PVC.
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Tamura et al. (2025) conducted a case report in Outflow tract premature ventricular contractions (n=1). High-resolution mapping with OCTARAY catheter and radiofrequency ablation was evaluated on Successful ablation of premature ventricular contractions. High-resolution mapping with the OCTARAY catheter enabled the successful identification and ablation of two distinct outflow tract premature ventricular contractions from the aortic sinus cusp.
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