皮肤外科冠状动脉干预后的相关性和相对预测能力 分数流量储备和定量流量比率
Bettina Csanádi1,2, Tamás Ferenci3,4, Róbert Gál5
1Gottsegen National Cardiovascular Center Budapest Hungary.
Journal of the American Heart Association
|April 10, 2025
概括
程序后的定量流量比率 (QFR) 高估了分量流量储备 (FFR),并且相关性很差. 虽然PCI后的FFR预测了结果,但PCI后的QFR并不能独立预测目标船的故障.
科学领域:
- 心脏病学 心脏病学
- 干预心脏病学 干预心脏病学
- 医疗成像医学成像
背景情况:
- 分流储备 (FFR) 评估皮肤冠状动脉干预 (PCI) 的成功,但未得到充分利用.
- 定量流量比 (QFR) 显示了PCI前与FFR的相关性.
- 后PCI QFR与后PCI FFR的预后价值尚未得到充分确立.
研究的目的:
- 为了比较PCI后QFR与PCI后FFR的相关性和预后值.
- 评估PCI后的QFR是否可以预测PCI后的临床结果.
主要方法:
- 观察性研究分析了FFR引导PCI和PCI后FFR测量的患者.
- 离线计算PCI后的QFR,对FFR值和结果视而不见.
- 主要终点:目标血管衰竭 (TVF);次要终点:心血管死亡/心肌梗塞.
主要成果:
- 在15.6%的船只中,QFR计算失败了;分析了422艘船只.
- 在PCI后的QFR系统地高估了PCI后的FFR (平均偏差+0.052) 与差相关性 (r=0.424).
- 后PCI FFR独立预测了TVF和心血管死亡/MI. 后PCI QFR并没有独立预测这些结果.
结论:
- 后PCI QFR显示与后PCI FFR的相关性较差,并高估了其.
- 后PCIFFR是临床结果的重要独立预测指标.
- 后PCI QFR缺乏针对目标血管衰竭或主要不良心脏事件的独立预后价值.
相关概念视频
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The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...
01:22Cardiac Output II: Effect of Stroke Volume on Cardiac Output
Cardiac output (CO), the amount of blood the heart pumps per minute, is a parameter in cardiovascular physiology determined by stroke volume and heart rate. Stroke volume, the amount of blood pushed from one of the ventricles per heartbeat, is influenced by preload, afterload, and contractility.
Preload
Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...
Preload
Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...