切除早发性心室收缩与前潜力映射在冠状动脉内:什么时候去infra-valve?
Youmei Shen1, Lei Wang1, Ning Chen1
1Division of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Journal of cardiovascular electrophysiology
|January 31, 2025
概括
瓦萨尔瓦大动脉鼻腔 (ASVs) 内的离散预潜在 (DPPs) 并非总是过早心室收缩 (PVCs) 的切除目标. 当DPP-QRS间隔小于25ms时,建议采用低门式方法,以获得成功的PVC切除.
科学领域:
- 心脏病学 心脏病学
- 电子生理学 电子生理学
- 医疗器械技术 医疗器械技术
背景情况:
- 来自瓦尔萨尔瓦大动脉鼻腔 (ASVs) 的早发性心室收缩 (PVCs) 是废除的目标.
- 废弃失败需要进一步研究电生理学特征和替代方法.
- 离散预潜在值 (DPP) 被确定为ASVs中的潜在指标.
研究的目的:
- 调查在ASVs内未能切除的PVCs的电生理特性.
- 在初始 ASV 除失败时,确定 PVC 的最佳除策略.
- 确定与DPP和ASV相关的成功PVC剥离的预测因素.
主要方法:
- 多中心研究招募了接受左心室外流通道测绘PVC的患者.
- 纳入标准:在ASV中可重现的DPP,在左心室前的ASV中最早的激活.
- 患者根据ASVs内的消去结果被分为ASV和非ASV组.
主要成果:
- 分析了40名患者,10人在非ASV组. 在ASV组,与非ASV组 (15.0±5.0ms) 相比,DPP-QRS间隔显著更长 (44.3±6.7ms).
- 一个DPP-QRS间隔<25ms准确地区分了非ASV和ASV病例.
- 在所有非ASV患者 (DPP-QRS 2.3±8.0毫米) 中,在ASV以下的成功切除 (DPP-QRS 2.3±8.0毫米);离DPPs的下膜目标为13.3±4.2毫米.
结论:
- 在ASV中的DPP并不总是确定PVC的最佳废弃目标.
- 在DPP-QRS间隔小于25毫秒时,建议对PVCs采用低膜除方法.
- 这一策略提高了对来自ASV附近的具有挑战性的PVC病例的切除成功率.
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