冠状动脉生理指数用于评估大动脉狭窄症患者的心肌缺血,这些患者正在接受门置换
Lennert Minten1, Keir McCutcheon2, Maarten Vanhaverbeke3
1Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium; Department of Cardiovascular Medicine, University Hospitals Leuven, Leuven Belgium.
JACC. Cardiovascular interventions
|October 30, 2024
概括
在患有严重大动脉狭窄和冠状动脉疾病的患者中,部分流量储备 (FFR) 和静止全周期比率 (RFR) 的新切断值可以准确预测心肌缺血症. 大动脉置换改善了微血管功能,并减少了左心室质量.
科学领域:
- 心脏病学 心脏病学
- 干预心脏病学 干预心脏病学
- 心脏外科手术 心脏外科手术
背景情况:
- 在患有大动脉狭窄 (AS) 和冠状动脉疾病 (CAD) 的患者中评估心肌缺血是复杂的,因为潜在的微血管功能障碍 (MVD).
- 分流储备 (FFR) 和静止全周期比率 (RFR) 在这个特定的临床场景中缺乏验证.
研究的目的:
- 确定AS患者患有CAD的高血压和静止指数之间的关系.
- 评估大动脉置换 (AVR) 对上心脏和微血管功能的影响.
- 建立准确的FFR/RFR截止点来诊断AS中的缺血症.
主要方法:
- 一项涉及连续FFR和RFR测量的前性多中心研究.
- 使用冠状动脉流量储备和微血管阻力指数评估MVD.
- 在重症AS和中度至重症CAD患者的AVR前和6个月后进行的测量.
主要成果:
- 在AVR之前观察到显著的FFR/RFR不一致.
- 在急性AVR后,FFR下降,而RFR保持稳定;长期,FFR下降,RFR显著增加.
- 左心室质量减少,微血管功能在AVR后得到改善.
- FFR ≤0.83和RFR ≤0.85在预测缺血症方面表现出最高的准确性.
结论:
- FFR ≤0.83和RFR ≤0.85是严重AS和CAD中心肌缺血的准确预测指标.
- AVR导致FFR和RFR的显著变化,减少左心室质量,改善微血管功能.
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