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不同类型的血管性认知损害的执行功能障碍 被引量:14

Executive dysfunction in different subtypes of vascular cognitive impairment
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摘要 目的分析不同类型的血管性认知功能损害(VCI)患者的执行功能损害特征。方法经头颅MRI证实为皮质下缺血性小血管病(SIVD)患者64例,其中16例单一的执行功能损害(s—VCI-ND)、26例多个认知领域损害(m-VCI—ND)和22例血管性痴呆(VaD)患者,完成一系列神经心理测验,包括总体认知水平、记忆、语言、注意/执行功能、空间结构能力等各个认知领域。其中执行功能检查包括定势转移、优势抑制、工作记忆、概念形成和流畅性5个分因子,共15种独立的分测验。结果汉诺塔测验、示踪排序测验、同步听觉连续加法测验等在非痴呆VCI(VCI.ND)患者中的完成率低于50%,不适合VCI—ND的检测;s-VCI—ND组与健康对照组比较,分别反映4种执行功能成分的连线测验B耗时数(216.5±69.3、137.4±37.9)、Stroop色词测验卡片C耗时数(115.4±30.1、72.9±17.5)、卡片分类测验(1.9±1.4、2.7±1.2)和范畴流畅性测验(列举动物14.2±2.3、17.7±4.4)差异具有统计学意义(t=4.73、5.72、2.04、3.53,均P〈0.05);VCI—ND的认知表现介于健康老人组和VaD组之间,其中m-VCI—ND有比较严重的执行功能损害和情景与语义记忆障碍,其认知缺损模式接近VaD,很可能是VaD的前期状态。结论SIVD所致VCI的执行功能损害缺乏选择性,部分执行功能测验可以作为早期检测VCI—ND的敏感工具。 Objective To investigate the executive function features of different subtypes of vascular cognitive impairment (VCI). Methods Sixty-four subjects with subcortical ischaemie vascular disease (SIVD) presumed by medical history and neuroimaging (cranial MRI) were recruited. The clinical and neuropsychological features of the 4 groups were compared: cognitive normal control ( n = 25 ) , simple executive impairment of VCI-ND ( s-VCI-ND, n = 16) , multi-domain impairment of VCI-ND ( m-VCI-ND, n = 26) and vascular dementia (VaD) patients (n = 22 ). All participants underwent neuropsyehologieal tests covering global cognitive function, executive function, memory function, language function and visual spatial skills. The executive tests included 15 independent subtest reflect set shifting, inhibition of prepotent responses, working memory, concept formation and fluency. Results Tower of Hanoi, self ordered pointing test and paced auditory serial addition test were not suitable for identification of VCI-ND because their finish rates were less 50%. Performance of trail making test (216. 5 ±69. 3 vs 137. 4 ±37. 9) , Stroop color words test ( 115.4 ± 30. 1 vs 72.9 ± 17.5 ), California cards sorting test-Chinese version ( 1.9 ± 1.4 vs 2. 7 ± 1.2) and animal category fluency test ( 14. 2± 2. 3 vs 17.7 ± 4. 4) had significant difference between s-VCI-ND group and cognitive normal control group (t = 4. 73, 5. 72, 2.04 and 3.53, all P 〈 0. 05) and these tests were applicable and sensitive assessment tools in all executive tests. Time-consuming index showed more sensitivity than correct index in executive function. Neuropsychological deficits of m-VCI-ND patients showed lower than that of s-VCI-ND group and better than that of VaD patients. It was likely that the m-VCI-ND was a transition state between normal aging and VaD. Conclusion Executive dysfunction of VCI caused by SIVD is short of specificity. Some tests may appear earlier in screening of VCI-ND.
出处 《中华神经科杂志》 CAS CSCD 北大核心 2009年第5期314-318,共5页 Chinese Journal of Neurology
基金 国家自然科学基金资助项目(30570601)
关键词 痴呆 血管性 认知障碍 神经心理学测验 Dementia, vascular Cognition disorders Neuropsychological tests
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