两例流出道室性早搏的主动脉窦尖的高分辨率制图

Q4 Medicine

Journal of Cardiology Cases Pub Date : 2025-09-01 DOI:10.1016/j.jccase.2025.06.002

Yuto Tamura MD , Kentaro Ozu MD , Takafumi Oka MD, PhD , Takayuki Sekihara MD , Tomohito Ohtani MD, PhD, FJCC , Yasushi Sakata MD, PhD, FJCC

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引用次数: 0

摘要

在导管消融治疗流出道室性早搏（PVC）时，主动脉窦尖（ASC）的电成像为确定室性早搏的起源提供了关键信息。OCTARAY™（Biosense Webster, Diamond Bar， CA， USA）是一种多样条48极电极导管，采用TRUEref™技术，适合ASC的形状，能够实现详细和快速的高分辨率ASC映射，而不会因机械刺激而诱发pvc。我们报告了一个使用TRUEref™技术，基于激活和电压映射技术，对ASC的两个类似的室性早搏进行导管消融的成功案例。高分辨率的成像有助于对聚氯乙烯的波前传播进行详细的视觉评估。学习目的导管消融术治疗流出道室性早搏（PVC），定位主动脉窦尖点有助于确定病因；然而，有时使用传统的电极导管是具有挑战性的。使用OCTARAY™进行高分辨率制图可能有助于详细评估流出道PVC。

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

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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