JAMA:在ST段抬高型心梗患者中,非梗死相关冠状动脉病变的程度、部位及临床意义

2014-12-23 刘揆亮译 中国医学论坛报

意义 在ST段抬高型心肌梗死(STEMI)患者中,有关非梗死相关动脉(IRA)病变的解剖学特点及临床相关性的资料很少。 目的 评价阻塞性非IRA病变的发生率、程度及部位,并比较STEMI患者存在及不存在非IRA病变时的30天死亡率。 设计、场所和参与者对1993-2007年期间发表的8项独立的国际STEMI随机临床试验的便利样本中汇集的患者,进行了一项回顾性研究。随访时间1个月至1

意义 在ST段抬高型心肌梗死(STEMI)患者中,有关非梗死相关动脉(IRA)病变的解剖学特点及临床相关性的资料很少。

目的 评价阻塞性非IRA病变的发生率、程度部位,并比较STEMI患者存在及不存在非IRA病变时的30天死亡率。

设计、场所和参与者对1993-2007年期间发表的8项独立的国际STEMI随机临床试验的便利样本中汇集的患者,进行了一项回顾性研究。随访时间1个月至1年不等。在试验纳入的68765例患者中,28282例有明确血管造影资料的患者被纳入本次分析。阻塞性冠状动脉疾病的定义是有一支心外膜主要动脉直径狭窄≥50%。为评价试验结果的普适性,采用韩国急性心梗注册(KAMIR)(2005年11月1日至2013年12月31日,n=18217)及杜克心血管数据库(2005年1月1日至2012年12月31日,n=1812)中STEMI患者的观察性数据,进行了外部验证。

主要转归和检测指标STEMI后的30天死亡率。

结果共有52.8%(14929例患者)存在阻塞性非IRA病变,29.6%累及1支血管,18.8%累及2支血管。不同IRA区域内的非IRA病变程度及分布无明显差异。存在非IRA病变患者中,未校正和校正的30天死亡率,显著高于不存在非IRA病变的患者[未校正,分别为4.3%和1.7%;危险差为2.7%,95%可信区间(CI)为2.3%~3.0%,P<0.001;以及校正,分别为3.3%和1.9%;危险差为1.4%,95%CI为1.0%~1.8%,P<0.001]。总体患病率以及非IRA病变与30天死亡率之间的相关性,与来自KAMIR登记的结果一致[校正的30天死亡率,对于存在非IRA病变患者为3.6%,无该病变患者为2.5%;危险差为1.1%(95%CI为0.6%~1.7%),P<0.001],但与杜克数据库的结果不一致[校正的30天死亡率,存在非IRA病变者为4.7%,无该病变者为4.3%,危险差为0.4%(95%CI为-1.4%~2.2%),P=0.65]。

结论和相关性对8项临床试验进行的一项回顾性汇总分析中,阻塞性非IRA病变在STEMI患者中常见,与30天死亡率轻微、但有统计学意义的升高相关。这些结果需要前瞻性设计研究的确认,不过也引出了有关STEMI患者中非IRA血运重建的恰当性及时机的问题。

原始出处:

Park DW1, Clare RM2, Schulte PJ2, Pieper KS2, Shaw LK2, Califf RM3, Ohman EM2, Van de Werf F4, Hirji S2, Harrington RA5, Armstrong PW6, Granger CB2, Jeong MH7, Patel MR2.Extent, location, and clinical significance of non-infarct-related coronary artery disease among patients with ST-elevation myocardial infarction.JAMA. 2014 Nov 19;312(19):2019-27. doi: 10.1001/jama.2014.15095.


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    2014-12-25 gdsun
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    2014-12-25 hyf035