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一种基于多腔心肌变形的新型心脏损伤在大动脉狭窄中的阶段系统,基于多腔心肌变形
Michele Tomaselli1, Paolo Springhetti2, Giovanni Benfari2
1Department of Cardiology, Istituto Auxologico Italiano, IRCCS, Milan, Italy.
European heart journal. Cardiovascular Imaging
|January 28, 2025
概括
使用斑点跟踪心声学 (STE) 的新型多室心脏损伤分期系统改善了对大动脉狭窄 (AS) 患者的风险预测. 这种先进的方法显示出比现有系统更强的结果关联.
科学领域:
- 心脏病学 心脏病学
- 心声回声扫描 (Echocardiography) 是一种心声回声扫描.
- 心脏成像 - - 心脏成像
背景情况:
- 大动脉狭窄 (AS) 需要准确的风险分层,以实现最佳的患者管理.
- 目前的AS分期系统可能无法完全捕捉心脏损伤的程度.
- 多腔心肌变形分析提供了一种新的方法来评估心脏健康.
研究的目的:
- 评估使用斑点跟踪回声心脏学 (STE) 的多腔心肌变形分析是否可以增强当前对中度至重度AS的分期系统.
- 改进AS患者的风险分层,使用先进的心声回声技术.
主要方法:
- 重新分析2D,多普勒和STE数据,这些数据来自中度至重度AS患者的衍生 (654名患者) 和验证 (237名患者) 队列.
- 接收机操作员特征曲线分析,以确定左心室全球纵向应变 (LVGLS),心房纵向应变 (PALS) 和右心室自由壁应变 (RVFWS) 的最佳切断值.
- 开发一个新的五阶段分类系统 (阶段0-4) 基于心肌菌株参数和评估其与所有原因死亡率的关联.
主要成果:
- 确定了最佳截止值:LVGLS≥15%,PALS≥13%,RVFWS≥19%.这些都是最好的.
- 新的多室分期方案独立地与任何原因死亡的风险增加有关 (aHR:1.28,P=0.001).
- 新的分类表明,与现有系统 (AUC 0.62和0.64) 相比,在两年内全因死亡率方面,其预测能力更强 (AUC 0.67).
结论:
- 通过STE结合多腔心肌变形的新型分期系统显示,中度至重度AS患者的预后值有所提高.
- 这种新的分类系统与临床结果的关联性比以前验证的分期方法更强.
- 多室应变分析是改善AS风险分层的一个有价值的工具.
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