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JACC:微血管状态对于具有较高的血流储备分数(FFR)患者预后的影响

2016-03-08 MedSci MedSci原创

微血管状态对于具有较高的血流储备分数(FFR)患者预后的影响目前尚不清楚。这项研究的目的是调查冠状动脉血流储备(CFR)和微循环阻力(IMR)指数对于接受FFR测量患者的影响。高FFR(>0.80)的患者根据CFR(≤2)和IMR(≥23U)级别进行了分组:A组,高CFR,低IMR; B组,高CFR高IMR; C组,低CFR低IMR;和D组,低CFR高IMR。以患者为导向的死亡,心肌梗死和血

微血管状态对于具有较高的血流储备分数(FFR)患者预后的影响目前尚不清楚。

这项研究的目的是调查冠状动脉血流储备(CFR)和微循环阻力(IMR)指数对于接受FFR测量患者的影响。

高FFR(>0.80)的患者根据CFR(≤2)和IMR(≥23U)级别进行了分组:A组,高CFR,低IMR; B组,高CFR高IMR; C组,低CFR低IMR;和D组,低CFR高IMR。以患者为导向的死亡,心肌梗死和血运重建的复合终点(POCO)进行了评估。中位随访时间为658天(四分范围:503.8至1139.3天)。

共有313例患者(663血管)的FFR,CFR和IMR进行了评估。FFR和CFR之间相关(r=0.201,P <0.001)和分类一致性(卡伯值=0.178,P<0.001)是适度的。与高CFR相比,低CFR与更高的POCO有关(P=0.034)。临床及血管造影特点无显著组间差异。高IMR低CFR的患者的POCO最高(p=0.002)。明显的微血管病变(P=0.008),多支血管病变(P=0.033)和糖尿病(P=0.033)是POCO的独立预测因子。一项生理指标被纳入显著改善预测模型的判别函数(相对综合鉴别改善0.467[P=0.037];没有分类的净重新分类指数0.648[P=0.007])。

CFR和IMR改善了高FFR患者的危险分层。高IMR低CFR与预后较差相关。

原始出处:

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    2017-01-30 hbwxf
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    2016-03-24 1ddc978cm67(暂无匿称)

    学习了,谢谢。

    0

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    2016-03-22 1de304d2m86(暂无匿称)

    值得学习

    0

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    2016-03-10 mgqwxj
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