冠状动脉生理值与心肌梗塞中微血管阻塞相关
Stefano Benenati1,2, Matteo Montorfano3, Silvia Pica4
1Cardiovascular Disease Chair, Department of Internal Medicine (Di.M.I.), University of Genova, Genova, Liguria, Italy.
Heart (British Cardiac Society)
|October 25, 2023
概括
冠状动脉流量储备 (CFR) 和微血管抵抗指数 (IMR) 的侵入性评估可以在ST升高心肌梗塞 (STEMI) 后识别微血管阻塞. 患有高IMR和低CFR的患者表现较差,包括心脏病发作大小.
科学领域:
- 心脏病学 心脏病学
- 心血管研究研究心血管研究
- 干预心脏病学 干预心脏病学
背景情况:
- ST段升高心肌梗塞 (STEMI) 需要及时治疗以恢复血液流动.
- 微血管阻塞可以发生,尽管成功的再输血,影响患者的结果.
- 在干预后评估冠状动脉生理学对于风险分层至关重要.
研究的目的:
- 评估侵入性冠状动脉生理学评估与STEMI患者的微血管阻塞之间的关联.
- 为了确定微血管阻塞的预测中微血管阻力指数 (IMR) 和冠状动脉流量储备 (CFR) 的最佳切断值.
- 将新型分层模型与现有模型进行比较.
主要方法:
- 意大利五个高等教育中心预计将招收102名STEMI患者 (2020年11月至2021年12月).
- 在初级穿皮冠状动脉干预后立即在罪祸首血管中测量CFR和IMR.
- 根据最佳的IMR和CFR截止点将患者分为四组.
主要成果:
- 最佳切线点被确定为IMR> 31单位和CFR ≤ 1.25.
- IMR> 31和CFR ≤ 1.25的患者显著增加了微血管阻塞 (83%对38%,p<0.001) 和较低的射出分数 (45±9%对52±9%,p=0.043).
- 与其他组相比,这个高风险组也表现出较大的心脏病发作大小和风险区域.
结论:
- IMR和CFR是STEMI中微血管阻塞的可靠指标.
- 一个IMR> 31单位和CFR ≤ 1.25确定STEMI患者的高风险的不良结果.
- 这些生理参数有助于PCI后的风险分层和管理决策.
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