Neurology:脑微出血、抗凝治疗与出血风险分析!

2017-11-09 xing.T MedSci原创

由此可见,MRI上存在CMB以及临界值为CMBs≥5处可能有助于确定高ICH风险伴有房颤患者的缺血性卒中亚群,并且在做出抗凝治疗的决定前,进一步验证可以帮助进行危险分层。

近日,神经病学领域权威杂志Neurology上发表了一篇荟萃分析文章,研究人员旨在评估脑微出血(CMBs)与口服抗凝药物的非瓣膜性房颤伴缺血性脑卒中患者将来发生自发性脑出血(ICH)风险之间的关联。

这是一个针对参与者超过 50例近期发生过缺血性卒中和房颤患者、检测了基础头颅MRI、长期口服抗凝治疗并且随访超过6个月的队列研究进行的荟萃分析。作者提供了基于CMB状态的卒中结局总结数据。研究人员从泊松回归中估计了合并的年化ICH和缺血性卒中发生率。研究人员使用随机效应模型根据有无CMB、CMBs≥5处和CMB影像学位置(脑叶、混合、深部)计算了ICH的比值比(OR)。

研究人员建立了国际协作,纳入了8个中心的数据,包括了1552名患者。CMB的原始患病率为30%,CMBs≥5处的患病率为7%。随访期间基础CMB(vs. 无CMB)与ICH相关(OR为2.68,95%可信区间为(CI)为1.19-6.01,P=0.017)。CMBs≥5处与未来更高的ICH风险相关(OR为5.50,95%CI为2.07-14.66,P=0.001)。无CMB患者中汇总的年度ICH发病率从0.30%(95%CI为0.04-0.55)增加到了0.81%(95%CI为0.17-1.45)(P=0.01),并且对于CMBs≥5处的患者增加到了2.48%(95%CI为1.2-6.2)(P=0.001)。CMBs和缺血性卒中复发之间无相关性。

由此可见,MRI上存在CMB以及临界值为CMBs≥5处可能有助于确定高ICH风险伴有房颤患者的缺血性卒中亚群,并且在做出抗凝治疗的决定前,进一步验证可以帮助进行危险分层。

原始出处:

Andreas Charidimou,et al. Brain microbleeds, anticoagulation, and hemorrhage risk Meta-analysis in stroke patients with AF.Neurology. 2017. http://dx.doi.org/10.1212/WNL.0000000000004704

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    2018-07-04 yinhl1978
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    2017-11-09 有备才能无患

    近日.神经病学领域权威杂志Neurology上发表了一篇荟萃分析文章.研究人员旨在评估脑微出血(CMBs)与口服抗凝药物的非瓣膜性房颤伴缺血性脑卒中患者将来发生自发性脑出血(ICH)风险之间的关联.

    0

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    2017-11-09 天涯183

    学习了.非常好的文章

    0

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研究认为磁共振确证的脑微出血情况对脑出血幸存者再出血具风险有显著影响,有望作为脑出血幸存者预后的预测指标

Stroke:危重病相关的脑微出血有啥特征?

在该研究中,研究人员描述了重大疾病患者大脑白质发生了一种独特的微出血现象。尽管这些患者大脑微出血的具体原因尚不清楚,但其发病机制可能涉及低氧血症,因为这些患者的脑部微出血与高厡暴露脑部微出血患者所描述的相类似。

Neurology:脑血管淀粉样变患者,病理中CMIs与脑微出血相关

目的:为了识别脑淀粉样血管病(CAA)患者尸检中出现的可能与脑微梗死(CMIs)相关的体内MRI标记。方法: 研究包括尸检中CAA的神经病理证据及患者生前脑MRI。记录包括临床特征及CAA像昂贵的小血管疾病的MRI标记,即白质高信号,脑微出血,皮质表面铁沉积、及半卵圆中心血管周围间隙。此外,评估MRI上是否存在脑出血。评估9个标志组织切片上CMIs的数目。结果:研究分析的49例CAA患者,36.7

J Hypertens:踝肱指数可预测靶器官损害

背景:动脉硬化与脑微出血(CMBS)的发病有关。踝肱指数(ABI)可用来预测动脉硬化。研究者假设,由于动脉僵硬度增加和波反射,ABI随年龄的增加而升高,,因而损伤靶器官。本研究旨在探讨ABI与臂踝脉搏波传导速度(baPWV),和CMBS的关系。方法:研究者招募了990名无心血管病和无卒中的受试者[平均年龄53(24-86)岁,531为女性],对所有受试者行颅脑MRI、ABI、baPWV检查。结果:

Stroke:脑微出血可预测死亡?

背景:脑微出血(CMB)是脑小血管病常见的磁共振成像标记物,被视为卒中及老年痴呆症发生风险的亚临床标记。CMB可能反映血管风险负担,是高死亡率的标志。研究者对非卒中和痴呆的社区居民进行调查CMB与死亡风险的相关性。方法:研究者评估了1963 Framingham原始和后续队列参与者(平均年龄67岁,54%为妇女)的脑磁共振成像和死亡率数据。采用Cox比例风险模型,研究者分析CMB与全因、心血管和卒