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肝硬化患者事件相关电位P300检查的临床意义 总被引:2,自引:0,他引:2
亚临床型肝性脑病 (SHE)是临床肝性脑病 (HE)前期 ,是肝硬化合并症之一 ,目前尚无统一的诊断标准。近来认为 ,脑诱发电位 (EP)是判定SHE敏感而客观的指标[1] 。但国内外报道的肝硬化SHE检出率差异较大。听觉事件相关电位 (ERP)P30 0 是诱发电位的晚成分 ,与注意、认识、判断及思维等高级神经活动相关 ,可作为高级神经活动功能评价的客观检测手段[2 ] 。我们对 36例肝硬化患者进行了ERPP30 0及脑干听觉诱发电位 (BAEP)、视觉诱发电位 (VEP)和体感诱发电位 (SEP)检测 ,并追踪 1年 ,观察HE的出现情况 ,以探讨… 相似文献
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事件相关电位(event-related potentials,ERPs)作为一种评价大脑信息加工活动的无创、高时间分辨率(ms)的电生理技术,被广泛地运用于认知过程及相关心理活动内容的研究中。 相似文献
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肝硬化失代偿期与事件相关电位P300及脑干听觉诱发电位相关性探讨 总被引:1,自引:0,他引:1
亚临床肝性脑病 (SHE)一般神经系统检查均正常。脑电图亦无异常。本文旨在研究评价事件相关电位P30 0 和脑干听觉诱发电位 (BAEP)检测对肝硬化失代偿期患者是否发生亚临床肝性脑病的早期诊断提供客观的定量指标。资料和方法一、临床资料31例明确诊断为肝硬化失代偿期患者均为 1998年 6月~2 0 0 0年 4月住院患者 ,临床无肝性脑病症状 ,血氨均在正常范围 ,排除中枢神经系统疾病及听力障碍。其中男性 2 0例 ,女性11例 ,年龄 36~ 5 2岁 ,平均 5 1岁。按肝功能Child Pugh分级标准 ,B级 17例 ,C级 14例。病因 :血吸虫病性 16… 相似文献
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《中国老年学杂志》2017,(3)
目的探讨事件相关电位(ERP)、动态脑电图(AEEG)联合脑干听觉诱发电位(BAEP)对昏迷患者预后的评估价值。方法选取100例昏迷患者作为研究对象。对昏迷患者进行ERP、AEEG及BAEP检测,采用Spearman相关性分析昏迷患者AEEG分级和BAEP分级与GOS评分的相关性,并探讨ERP、AEEG联合BAEP对昏迷预后的评估价值。结果 Spearman相关性分析发现,昏迷患者入院1 w内AEEG分级与昏迷发生3个月后GOS评分呈负相关(r=-0.715 2,P=0.000);昏迷患者入院1 w内BAEP分级与昏迷发生3个月后GOS评分呈负相关(r=-0.632 6,P=0.000)。患者入院1 w内行ERP、AEEG联合BAEP检测对昏迷患者预后进行评估,其敏感性(SE)、特异性(SP)、对预后评估的准确率(AC)优于格拉斯哥昏迷评分(GCS)、ERP、AEEG以及BAEP(P<0.05),而预后评估的错误率(FA)均低于GCS、ERP、AEEG以及BAEP。结论 ERP、AEEG联合BAEP可以作为评估昏迷患者预后的重要手段,值得推广。 相似文献
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早期帕金森病患者事件相关电位P300研究 总被引:1,自引:0,他引:1
目的研究早期帕金森病(PD)患者听觉事件相关电位P300的异常特征,为早期干预PD患者认知功能损害提供实验依据。方法早期PD患者83例(PD组),健康人58例(对照组)。肌电图诱发电位仪测定两组P300波群各成分(N1、P2、N2、P3)潜伏期和波幅、反应时,MMSE评定两组的认知功能。结果PD组N2、P3潜伏期延长(P〈0.05);P300波群各成分中P3阳性率最高[PD痴呆组为53.3%,PD非痴呆(PD—D)组为29.4%]。结论早期PD患者P300外源性成分P2和内源性成分N2、P3的潜伏期均延长,提示其认知功能异常,还有警觉、选择、注意的障碍。P3潜伏期是识别早期PD伴发痴呆的敏感指标。 相似文献
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《中国老年学杂志》2017,(10)
目的探讨胼胝体膝部梗死患者听觉事件相关电位P300的特征及其在患者诊断中的应用价值。方法选择胼胝体膝部梗死患者17例(病例组)及同期健康检查人群17例(对照组)为研究对象。采用美国Nicolet Spirit脑诱发电位仪,进行听觉事件相关电位P300检测,分析比较病例组与对照组之间P300潜伏期及波幅有无差异(P>0.05)。结果病例组P300潜伏期显著长于对照组(t=4.85,P<0.05);病例组波幅显著低于对照组(t=8.79,P<0.05);病例组简易精神状态检查(MMSE)量表评分与波幅明显负相关性(r=-0.61,P<0.05),但与潜伏期无明显相关性(r=-0.07,P=0.78)。以潜伏期为指标,诊断胼胝体膝部梗死的敏感性为94.12%,特异性为76.47%,ROC曲线下面积为0.83;以波幅为参考指标诊断诊断胼胝体膝部梗死的敏感性为100%,特异性为94.22%,ROC曲线下面积为0.98。结论胼胝体膝部梗死患者听觉事件相关电位P300的潜伏期延长和MMSE评分与波幅明显负相关性,可作为电生理诊断的参考指标。 相似文献
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脑功能轻微障碍综合征 (MBD)即儿童多动症 ,患儿多有认知功能障碍及性情改变等。为了对 MBD患儿认知功能的评定提供客观依据 ,1998~ 2 0 0 2年 ,我们对 32例 MBD患儿进行了听觉事件相关电位 P30 0检测。现报告如下。临床资料 :本文观察组 32例 ,均依据 1986年中华医学会儿童多动症协作组制定的 MBD标准诊断 ,其中男 2 7例 ,女 5例年龄 6~ 13岁 ;病程 2~ 5年。即往史为早产儿 5例 ,产后窒息 8例 ,头部有外伤史 7例 ,高热惊厥史 5例。其主要症状为注意力不集中 ,行为改变 (动作过多或不协调 ,上课不遵守纪律等 ) ,学习困难 ,性情改变… 相似文献
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P300 cognitive evoked potentials have been shown to be effective for the assessment of mild hepatic encephalopathy but no
investigations of their use with liver transplantation has been conducted. In this pilot study 12 subjects (7 male, 5 female,
average age 43.9-years-old) underwent recording of auditory and visual P300 cognitive evoked potentials prior to liver transplantation
and again 3–6 months subsequent to transplantation. Significant increases (p < 0.01) in P300 visual amplitude, as well as significant decreases in visual (p < 0.01) and auditory latencies (p < 0.01) were observed following transplantation. Auditory amplitudes increased but not to a statistically significant degree.
P300 cognitive evoked potentials may provide a useful tool for monitoring the cerebral status of liver transplantation patients
if combined with established methods such as cognitive testing and EEG. Further research of their usage with these patients
is warranted. 相似文献
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Brainstem auditory and visual evoked potentials in Type 1 (insulin-dependent) diabetic patients 总被引:1,自引:0,他引:1
R. Khardori Dr. N. G. Soler D. C. Good A. B. DevlescHoward D. Broughton J. Walbert 《Diabetologia》1986,29(6):362-365
Summary Brainstem auditory evoked potentials and pattern shift visual evoked potentials were measured in 34 Type 1 (insulin-dependent) diabetic patients with long-standing disease and in 43 control subjects. Thirty-two percent of diabetic patients had abnormal brainstem auditory evoked potentials and 15% had abnormal visual evoked potentials. These abnormalities were not related to duration of diabetes, diabetic control or individual diabetic complications (retinopathy, nephropathy, peripheral or autonomic neuropathy). The aetiology of the abnormalities must remain a subject for speculation. The findings of this study are consistent with a central diabetic neuropathy involving the brainstem in long-standing diabetic patients. 相似文献
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目的探讨Alzheimer病(AD)在自发和诱发脑电方面的特征。方法对39例AD患者及40例健康对照者应用SEEG-16道脑地形图和诱发电位系统完成了脑电图(EEG)、脑地形图(BEAM)、视觉和听觉诱发电位(VEP和AEP)、脑干听觉反应(ABR)和P3006种检测。结果AD患者EEG异常率87.5%。AD患者BEAM特征:δ和θ功率在主要记录点均增高,α功率在额、后颞、枕区降低。AD患者VEP、AEP主成分、P300非靶潜伏期P2,以及AEP、VEP和P300的P2、P3波幅均减低。另外,AD患者的ABR绝对潜伏期(波Ⅰ)和绝对波幅(波Ⅰ、Ⅲ、Ⅴ和Ⅵ)也延迟或降低,与脑CT结果一致。结论短和长潜时、认知电位及地形图相结合的方法有可能作为AD辅助的电生理诊断方法。 相似文献
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事件相关电位P300和简易智能精神状态检查在轻微型肝性脑病检测中的价值 总被引:1,自引:0,他引:1
目的:评价事件相关电位P_(300)和智能精神状态检查(MMSE)诊断轻微型肝性脑病(MHE)的价值.方法:30例肝炎后肝硬化患者进行事件相关电位P_(300)和脑诱发电位检查及MMSE检测,并观察1 a后临床肝性脑病(HE)的出现情况.结果:事件相关电位P_(300)异常21例(70.0%),体感诱发电位(SEP)异常11例(36.7%),MMSE得分<27(提示有认知功能障碍)13例(43.3%),事件相关电位P_(300)和/或MMSE异常22例(73.3%),两者均异常10例(33.3%),追踪观察1 a的23位患者中,17例事件相关电位P_(300)和/或MMSE异常患者出现临床肝性脑病12例,两者均无异常的6例患者中,出现临床肝性脑病1例,两者比较有显著性差异(70.6% vs 16.7%,P<0.05).结论:事件相关电位P_(300)和MMSE可作为判断肝硬化失代偿期是否发生轻微型肝性脑病的一种敏感又可靠的方法. 相似文献
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目的探讨听觉诱发电位指数(AAI)和异丙酚效应室浓度(ce)反映老年患者异丙酚靶控输注(TCI)时镇静深度的准确性,并与脑电双频指数(BIS)比较。方法45例老年患者行异丙酚TCI,初始靶浓度为1μg/ml,按0.5μg/ml逐步递增,观察镇静警觉评分(OAA/S)和对口头指令、睫毛反射、尺神经刺激的反应及相应的AAI、BIS,比较AAI、Ce及BIS与镇静深度的相关性,并计算意识及疼痛反应消失时的异丙酚效应室EC50 EC95和AAI与BIS的ED50 ED95。结果AAI、BIS与OAA/S呈直线正相关,与Ce呈负相关。意识消失的AAIED孙ED95为40.1、30.3,BIS的ED50 ED95为59.5、51.7;痛反应消失的AAIED50、ED95为28.8、23.2,BIS的ED50、ED95为52.4、43.7;对应的异丙酚EC50、EC95分别为1.28、1.69μg/ml和1.76、2.34μs/ml。结论AAI和Ce可以反映老年患者异丙酚TCI的镇静深度。 相似文献
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肾功能衰竭患者脑干听觉诱发电位的监测 总被引:2,自引:0,他引:2
对31例老年肾功能患者肾功能和脑干听觉诱发电位(BAEP)监测,并动态检测11例血液透析(血透)患者治疗前后BAEP变化。结果表明:老年肾功衰竭患者BAEP中I、Ⅲ、V主波潜伏期(PL)、I~Ⅲ、I~V峰间潜伏期较对照组均明显延长(P<0.05~0.01),且其诱发电位异常与血尿素氮、肌酐呈正相关。11例血透患者平均透析6.2个月,透析前后同体比较,血透后Ⅲ、V主波潜伏期和I~Ⅲ、I~V峰间潜伏期均较透析前明显缩短(P<0.05~0.01)。提示脑干听觉诱发电位监测可作为病情及疗效判断指标,有助于该病神经系统异常的早期诊断。 相似文献
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高间接胆红素血症新生儿血清NSE与脑干听觉诱发电位的关系 总被引:1,自引:0,他引:1
目的探讨新生儿高间接胆红素血症(高间胆)患儿神经元特异性烯醇化酶(NSE)含量与脑干听觉诱发电位(BAEP)的关系,评价NSE值对评价高间胆患儿听神经损害的意义。方法对87例血清NSE〉18μg/L(研究组)、23例NSE〈18μg/L的足月高间胆患儿(对照组)进行BAEP检测。结果研究组BAEP的I、Ⅲ、V波潜伏期(PL)和I-Ⅲ、Ⅲ-V、I-V波间期(IPL)较对照组显著延长(P〈0.05);随NSE增高,各波PL和IPL有延长趋势。结论高间胆患儿血清NSE水平与BAEP明显相关,血清NSE可作为评价高间胆患儿听神经损害的生化指标。 相似文献
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Saxena N Bhatia M Joshi YK Garg PK Tandon RK 《Journal of gastroenterology and hepatology》2001,16(3):322-327
BACKGROUND AND AIMS: The P300 event-related potentials (P3ERP) have been recently advocated for detection of cognitive disturbances in early encephalopathy. However, no systematic follow-up study has been conducted to understand the clinical significance of subclinical hepatic encephalopathy (SHE) detected by this or other methods. The present study was therefore undertaken to examine the diagnostic usefulness of auditory P3ERP in the detection of SHE, to compare it with that of the number connection test (NCT), and to investigate the clinical outcome of patients with SHE in terms of progression to overt encephalopathy. METHODS: P300 event-related potential latencies were measured and the NCT time was recorded in 81 non-encephalopathic cirrhotic patients (Aged 43.8 +/- 11 years, 23 alcoholic and 58 non-alcoholics) attending the outpatient department at our tertiary care hospital (All India Institute of Medical Sciences Hospital). Cut-off values for abnormality in the tests were developed from age-, sex- and education-matched controls. Patients were followed up at regular intervals for the development of overt encephalopathy, and the identifiable precipitating factors were noted. The P3ERP latencies (363 +/- 34 msec vs 349 +/- 23 msec), as well as NCT time (54.6 +/- 30.6 s vs 39.5 +/- 15.8 s) were significantly prolonged (P< 0.01) in patients with liver cirrhosis when compared with the non-cirrhotic controls. RESULTS: The P3ERP defects were seen in 24.6% of cirrhotic patients, while NCT time was prolonged in 19.7% of the patients. Nearly 43% of the patients with SHE progressed to overt encephalopathy within a mean duration of 5 months, while only 3.9% of the non-SHE patients did so. Of the patients who developed overt encephalopathy, 64.2% had P3ERP latency prolongations while 35.7% had abnormal NCT. CONCLUSIONS: The results of the present study suggest that P3ERP and NCT are valid tools for the screening of SHE in cirrhotic patients as there is a greater likelihood of overt encephalopathy development in patients with an abnormality detected by these tests than in patients with no such abnormality. 相似文献