TCT 2018 重磅丨张俊杰教授:ULTIMATE研究表明,IVUS引导的药物支架置入改善所有患者的临床结局

2018-09-27 国际循环编辑部 国际循环

美国-圣地亚哥当地时间9月24日,在国际顶级2018经导管心血管治疗学学术年会(TCT 2018)上,南京市第一医院张俊杰教授公布了ULTIMATE研究的最新结果,主要探讨血管内超声(IVUS)引导的冠状动脉药物洗脱支架置入能否为患者带来更好的临床获益。研究结果并在Journal of the American College of Cardiology(JACC)同期发表。

美国-圣地亚哥当地时间9月24日,在国际顶级2018经导管血管治疗学学术年会(TCT 2018)上,南京市第一医院张俊杰教授公布了ULTIMATE研究的最新结果,主要探讨血管内超声(IVUS)引导的冠状动脉药物洗脱支架置入能否为患者带来更好的临床获益。研究结果并在Journal of the American College of Cardiology(JACC)同期发表。

ULTIMATE研究背景

IVUS以其优质的图像质量和空间分辨率,在介入心血管病学的发展中扮演重要角色,除可提供血管管腔及其直径参数外,还可为术者提供斑块负荷、斑块构成和血管重构等信息。此外,临床实践中,IVUS还可指导经皮冠状动脉介入治疗(PCI)的策略选择和评估支架置入效果。既往随机对照试验(RCT)和观察性研究提示,在复杂病变(冠状动脉慢性完全闭塞、长病变、左主干病变等)和高危患者(急性冠状动脉综合征)中,IVUS指导药物洗脱支架置入可带来临床获益,最新相关荟萃分析结果亦与之吻合,提供进一步力证。

目前,关于一部分替代终点(比如晚期管腔丢失)的改善能否转换为临床事件的获益一直是争论的话题,而且IVUS指导all-comers(全患者群)的介入治疗能否获益仍不确定。为探讨这一问题,2014年南京市第一医院的陈绍良教授和张俊杰教授牵头启动了ULTIMATE研究,并在此次TCT 2018主会场报告了其最新研究结果。

研究方案

ULTIMATE研究是一项前瞻性、多中心、随机对照研究,计划入选1448例拟接受冠状动脉介入治疗的all-comers患者,按1:1随机分为两组,分别为接受单纯造影指导组(n = 724)和IVUS指导组(n = 724)。54.9%的患者出现多支病变。平均病变长度为34.5 mm,66.9%的病变为B2 /C型病变。IVUS达标的标准需满足:①术后支架段MLA>5.0 mm2,或>90%的远端参考血管的管腔面积;②支架边缘5 mm内斑块负荷<50%;③无深达中层且长度超过3 mm的边缘夹层。三条标准同时满足才可定义为IVUS达标,若有一条不满足则不能判定为IVUS达标。研究主要终点为术后1年时靶血管失败率(TVF),包括心源性死亡、靶血管心肌梗死(TV-MI)和临床驱动的靶血管血运重建(TVR)。

研究结果

PCI术后一年,共发生60例(4.2%)TVF,其中IVUS组21例(2.9%),血管造影组39例(5.4%)(HR=0.530;95%CI:0.312~0.901;P=0.019)。在病变水平分析中,与血管造影组相比,IVUS组的靶病变血运重建率(TLR)较低(0.9% vs. 2.3%,P=0.02)。尽管使用了IVUS,53%的患者符合预先设定的支架置入最佳标准;在该组中,TVF为1.6%,而未达到所有最佳IVUS标准的患者为4.4%(HR=0.349;95%CI:0.135~0.898;P=0.029)。

张俊杰教授指出,该研究表明,与血管造影指导相比,IVUS引导的支架置入术显著改善所有患者的临床结局,特别是对接受IVUS定义的最佳手术患者。

原始出处:
Junjie Zhang, Xiaofei Gao, Jing Kan, et al. Intravascular Ultrasound-Guided Versus Angiography-Guided Implantation of Drug-Eluting Stent in All-Comers: The ULTIMATE trial. Journal of the American College of Cardiology. September 2018.

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    2018-09-29 xxxx1054
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    2018-09-28 佳虎

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