血管导向分析关于严重大动脉狭窄和中间冠状动脉病变患者的定量流量比和死亡率之间的关系
Iginio Colaiori1, Luca Paolucci2, Fabio Mangiacapra3
1Division of Cardiology, Santa Maria Goretti Hospital, Latina, Italy.
概括
定量流量比 (QFR) 在跨导管大动脉置换 (TAVR) 患者中重新分类冠状动脉疾病 (CAD),确定显著的死亡风险. 这种功能性评估改进了传统的血管造影,用于预测患者的结果.
科学领域:
- 心血管医学 心血管医学
- 干预心脏病学 干预心脏病学
- 诊断成像 诊断成像 诊断成像
背景情况:
- 定量流量比 (QFR) 已建立,用于预测经过跨导管大动脉置换 (TAVR) 的患者的死亡率.
- 与标准血管造影相比,冠状动脉疾病 (CAD) 在血管层面的基于QFR的重新分类对死亡风险的影响仍然不清楚.
研究的目的:
- 为了评估QFR如何重新分类TAVR患者血管层面的CAD与血管学相比.
- 确定这种基于QFR的重新分类对3年后因任何原因死亡风险的影响.
主要方法:
- 分析了一组280名TAVR患者的队列,这些患者患有旁观者冠状动脉狭窄症.
- 冠状动脉疾病 (CAD) 通过血管学 (直径狭窄≥50%) 和QFR (≤0.80) 的功能性定义.
- 所有的病变都被保守地管理,三年死亡率是主要结果.
主要成果:
- 功能性CAD (QFR ≤0.80) 在11.2%的病变中被发现,明显低于血管学CAD (26.0%),表明大量重新分类 (p<0.001).
- 血管图/QFR不匹配发生在22.5%的病变中,特别是在大血管和近端LAD病变中.
- QFR ≤0.80独立预测的死亡率 (HR 2.91),随着QFR值较低和LAD位置的QFR阳性的风险逐渐增加.
结论:
- 与血管造影相比,QFR在TAVR患者的血管水平上显著重新分类了CAD率.
- 使用QFR的功能评估为预测该患者群体的死亡率提供了显著的预后价值.
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