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脑电非线性分析在阿尔茨海默病早期诊断中的临床应用

发布时间:2016-12-19 17:41

  本文关键词:脑电非线性分析在阿尔茨海默病早期诊断中的临床应用,由笔耕文化传播整理发布。


        目的:探讨脑电非线性分析方法对阿尔茨海默病(AD)早期诊断的临床应用价值。方法:受试者分为轻度阿尔茨海默病组(轻度AD组=13例)、遗忘型轻度认知功能障碍组(aMCI组=9例)、血管性认知功能障碍组(VCI组=10例)及正常老年人(NA=10人)组。受试者完成中文版简易智能状态检查(MMSE)、蒙特利尔认知评估量表(MoCA)、总体衰退量表(GDS)、临床痴呆评定量表(CDR)、Hachinshki缺血指数(HIS)、汉密尔顿抑郁量表(HDRS)、日常生活活动能力量表(ADL)评定,采集脑电信号并行非线性分析。最后选取有显著差异的导联(P<0.01)行ROC曲线分析来评估脑电非线性参数对AD早期诊断的价值。结果:①非线性参数D2、PD2、Dm、Cx、ApEn、C-ApEn能够反应认知功能障碍程度变化的总体趋势,其中,D2、PD2、Cx、ApEn差异有显著的统计学意义(均P<0.01);②轻度AD组与NA组比较,D2、PD2、Dm、LE、KE、Cx、ApEn、C-ApEn差异有统计学意义(均P<0.05),其中Cx全脑平均值、除O2外各导联均减低且差异有显著的统计学意义(均P<0.01),KE仅O1导联减低且差异也有显著的统计学意义(P<0.01),而LE在O1、O2导联增高且差异有统计学意义(P<0.01,P<0.05);aMCI组与NA组比较,D2(P4、F7)、PD2(P3、T6和全脑平均值)、KE(P4、O1)、Cx(F7、T5)、ApEn(F7、T4、T6)减低且差异有统计学意义(P<0.01,P<0.05);轻度AD组与VCI组比较,,D2、PD2、Dm、LE、KE、Cx、ApEn、C-ApEn差异有统计学意义(均P<0.05);aMCI组与VCI组比较,LE、KE、Cx、ApEn、C-ApEn差异有统计学意义(均P<0.05)而轻度AD组与aMCI组比较,D2、PD2、Dm、LE、KE、Cx、ApEn、C-ApEn差异有统计学意义(均P<0.05)。③所选的8种非线性参数在大多数差异有显著意义的导联(P<0.01)诊断价值较高。其中,轻度AD组与NA组相比,Cx15个导联中除T5(A=0.885,诊断价值中等)外诊断价值均较高(A>0.9);LE仅在O2导联敏感性为69.2%,特异性为80%,诊断价值中等(A=0.788);KE仅在O1导联敏感性为84.6%,特异性为90%,诊断价值中等(A=0.838)。而aMCI组与NA组相比,Cx在F7导联敏感性为88.9%,特异性为70%,诊断价值中等(A=0.817)而ApEn在T6敏感性为77.8%,特异性为90%,诊断价值较高(A=0.917)。结论:脑电非线性分析能够较早客观判断脑功能的改变,对轻度AD敏感性和特异性要优于aMCI,有助于AD的早期诊断。

    Objective: To investigate the clinical application value of EEGnonlinear analysis in early diagnosis ofAlzheimer’s disease.Method:Mini-mental State Examination(MMSE),Montreal CognitiveAsswssment Scale(MoCA),Global deterioration Scale(GDS),Clinicaldementia rating scale(CDR),Hachinski ischemic index(HIS),Hamiltondepression rating scale(HDRS),activity of daily living(ADL)were completedand EEG were recorded from13mild Alzheimer’s disease patients(MildAD),9amnestic mild cognition impairment patients(aMCI),10vasular cognitiveimpairment patients(VCI) and10normal aged (NA) subjects.Electrodes withsignificance(P<0.01)were slected to investigate the value of EEG nonlinearanalysis in early diagnosis of Alzheimer’s disease using receiver operatingcharacteristic(ROC)curves.Results:①Nonlinear parameters D2,PD2,Dm,LE,Cx,ApEn,C-ApEn canreflect the overall trend of cognition impairment,in which D2,PD2,Cx,ApEnshowed highly statistical significant differences(P<0.01);The AD patientshad significantly lower Cx values except at the O2(P<0.01),lower KE valuesonly at the O1(P<0.01),and higher values of LE at the O1,O2~electrodes(P<0.01~,P<0.05)compared with NA subjects. D2(P4,F7), PD2(P3,T6and thewhole brain mean value),KE(P4,O1),Cx(F7~,T5), ApEn (F7,T4,T6~) weresignificantly lower for aMCI group in contrast to NA subjects(P<0.01~,P<0.05). Compared with VCI group,all D2, PD2,Dm,LE,KE,Cx,ApEn,C-ApEn in mildAD group had significant difference(P<0.05).The LE,KE,Cx,ApEn,C-ApEn values of the EEGs for the aMCI patients were different from thoseof VCI patients(P<0.05) and significant differences of D2,PD2,Dm,LE,KE,Cx,ApEn,C-ApEn were also found(P<0.05) when contrastedaMCI patients with mildAD ones.③The diagnosis values of8selectednonlinear parameters are higher at the most electrodes where P<0.01.Compared with NA group, the diagnosis values of Cx were higher except T5for mildAD. The sensitivity and specificity of LE were69.2%,80%respectively with the moderate diagnosis value only at O2.And84.6%,90%respectively for KE with the moderate diagnosis value only at O1. On theother hand,between aMCI group and NA group, the sensitivity and specificityof Cx were88.9%,70%respectively only at F7with the moderate diagnosisvalue.And77.8%,90%separately for ApEn at T6with the higher diagnosisvalue.Conclusion: Nonlinear analysis of EEG can objectively evaluate thebrain function changes, albeit the sensitivity and specificity for mildAD aresuperior to aMCI, which may contribute to AD early diagnosis.

        

脑电非线性分析在阿尔茨海默病早期诊断中的临床应用

致谢4-5摘要5-7Abstract7-8前言10-13对象与方法13-19结果19-39讨论39-51结论51结语与展望51-53参考文献53-56综述:阿尔茨海默病生物学标志物的研究进展56-95    参考文献86-95附录95-104个人简历104



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  本文关键词:脑电非线性分析在阿尔茨海默病早期诊断中的临床应用,由笔耕文化传播整理发布。



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