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JAMA N:DWI阳性者才能从双抗治疗中获益?

2022-04-11 杨中华 “脑血管病及重症文献导读”公众号

2022年3月来自美国的Sara K. Rostanski等公布了POINT随机临床试验的事后分析结果,目的在于探讨TIAMS患者存在指数影像与否是否会改变氯吡格雷-阿司匹林联合治疗与卒中复发的关系。

短暂性脑缺血发作和轻微卒中(transient ischemic attack and minor stroke,TIAM)患者处于短期卒中高风险之中。对于高危TIA(ABCD2>=4)和轻型缺血性卒中(NIHSS≤3),与阿司匹林单药相比,在发病12至24小时内短期使用阿司匹林加氯吡格雷(氯吡格雷-阿司匹林)可显着降低随后卒中的风险。目前美国AHA和ASO指南建议对符合条件的TIAM患者使用氯吡格雷阿司匹林治疗。

由于与单药相比,在TIAM患者中使用双重抗血小板疗法与出血并发症风险增加相关,因此确定哪一些TIAM患者最有可能从该疗法中获益是很重要的。对于TIAMS患者,MRI DWI显示梗死与缺血性卒中风险增加有关。CHANCE试验的影像学子研究中,DWI显示梗死与随后缺血性卒中的风险增加有关,与阿司匹林单药治疗相比,氯吡格雷-阿司匹林治疗对多发性急性梗死者获益最大。然而,只有21%的CHANCE试验参与者被纳入影像学子研究,因此限制了这些发现的普遍性。

2022年3月来自美国的Sara K. Rostanski等在JAMA Neurology上公布了POINT随机临床试验的事后分析结果,目的在于探讨TIAMS患者存在指数影像(index imaging)与否是否会改变氯吡格雷-阿司匹林联合治疗与卒中复发的关系。

在POINT随机临床试验中,从2010年5月28日至2017年12月19日,在北美、欧洲、澳大利亚和新西兰10个国家的269个地点登记了高危TIA和轻型缺血性卒中患者。在这项事后分析中,根据指数影像是否存在急性梗死,将患者分为两组。主要结局为,指数影像中急性梗死的存在与否是否改变了氯吡格雷-阿司匹林与随后缺血性卒中风险的关系。

在POINT试验纳入的4881名患者中,4876名(99.9%)符合纳入标准(平均[SD]年龄65[13]岁;2685名男性[55.0%])。共有1793名患者(36.8%)在指数影像上发现急性梗死。

随访期间,指数影像上的梗死与缺血性卒中相关(HR,3.68;95% CI,2.73-4.95;P<0.001)。指数影像上有梗死的患者(HR,0.56;95%可信区间,0.41-0.77;P<0.001)与指数成像上无梗死的患者(HR,1.11;95%可信区间,0.74-1.65;P=0.62)相比,氯吡格雷-阿司匹林 vs 阿司匹林单药与缺血性卒中风险降低相关,具有显着的交互关系(P=0.008)。

最终作者认为,在这项研究中,指数影像上存在急性梗死与卒中复发风险增加有关,与氯吡格雷-阿司匹林更显着的获益相关

原始出处:

Sara K. Rostanski, et al. Infarct on Brain Imaging, Subsequent Ischemic Stroke, and Clopidogrel-Aspirin Efficacy: A Post Hoc Analysis of a Randomized Clinical Trial. JAMA Neurol. 2022 Mar 1;79(3):244-250. doi: 10.1001/jamaneurol.2021.4905.

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    2022-04-13 hyf028
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    2022-04-11 肿瘤克星

    JAMA上文章都是顶级的,谢谢梅斯及时上新

    0

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