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Neurology:小血管疾病进展对卒中后长期认知和功能变化的影响

2022-02-10 MedSci原创 MedSci原创

卒中后,波动的白质高信号意味着卒中后一年时而不是基线的白质高信号体积与同时期的认知评分密切相关。卒中后认知和独立性的共同纵向下降是痴呆诊断的核心,与白质高信号量的增加相关。

脑卒中患者白质高信号严重程度与脑卒中后痴呆和依赖性有关。然而,白质高信号可在卒中后减少或增加,对认知能力下降的预测并不精确。尽管这一预测功能的临床意义重大,但很少有数据评估白质高信号变化、认知和功能之间纵向的相互关系。

近日,神经病学领域权威取杂志Neurology上发表了一篇研究文章,研究人员招募了轻微缺血性卒中后三个月内的患者,轻微缺血性卒中定义为NIHSS评分<8且预计不会出现改良的Rankin评分(mRS)>2的情况。

参与者在一年内重复多次MRI检查,并在一年和三年内重复认知和mRS评估。研究人员采用纵向混合效应模型来评估Addenbrooke认知评估修订版(ACE-R)和修正的Rankin评分(mRS)的变化。对于mRS,研究人员评估了纵向白质高信号体积(立方根;颅内体积百分比[ICV]),并调整了年龄、NIHSS、ACE-R、卒中亚型和评估时间。对于ACE-R,研究人员额外调整了ICV、mRS、病前智商和血管危险因素。

然后,研究人员使用多变量模型来联合评估不断变化的认知/mRS,并使用所有可用数据对预后变量进行了调整。

研究人员招募了264名患者;平均年龄为66.9(标准差为11.8);41.7%为女性;中位mRS为1(IQR为1-2)。卒中一年后,标准化白质高信号体积与一年ACE-R的相关性更强(ACE-R每降低1分,β=-0.259,95%置信区间[CI]为-0.407至-0.111,p=0.001),相比于亚急性白质高信号体积与ACE-R之间的关系(β=0.105,95%CI为-0.265至0.054,p=0.195)。三年时mRS与三年时的ACE-R相关(β=-0.272,95%CI为-0.429至-0.115,p=0.001)。

由此可见,卒中后,波动的白质高信号意味着卒中后一年时而不是基线的白质高信号体积与同时期的认知评分密切相关。卒中后认知和独立性的共同纵向下降是痴呆诊断的核心,与白质高信号量的增加相关。

 

原始出处:

Una Clancy,et al.Impact of Small Vessel Disease Progression on Long-term Cognitive and Functional Changes After Stroke.Neurology.2022.https://n.neurology.org/content/early/2022/02/07/WNL.0000000000200005

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    2022-10-29 yinhl1978
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