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视觉激发电位(简称VEP)首先用于检测视觉系统以及伴有视觉症状的神经系统疾病,后又用于研究抗精神病药对大脑的作用以及估计尿毒症性昏迷。VEP也能反映大脑皮质和皮质下神经元的脱髓鞘过程以及递质的变化。业已证明,VEP记录对实验性肝性脑病的神经改变是一种可靠和特异的方法。本研究的目的是评价VEP对肝硬化患者的脑病作客观检测的诊断价值及用以识别肝性脑病前期的价值。对象和方法:正常男或女性共15名,年龄在32～60岁。不同性别、病因的肝硬化患者45例,年龄34～54岁。45例患者中29例有脑病,16例无脑病表现。20例肝性脑病均为自发性,无明显诱因。在1小时内给病
Visual excitation potential (VEP) was first used to detect visual systems and neurological diseases associated with visual symptoms, and then used to study the role of antipsychotics in the brain and to estimate uremic coma. VEP also reflects the process of demyelination and neurotransmitter changes in the cerebral and subcortical neurons. It has been demonstrated that VEP recordings are a reliable and specific method of neural alteration in experimental hepatic encephalopathy. The purpose of this study was to evaluate the diagnostic value of VEP for the objective detection of encephalopathy in cirrhotic patients and the value of identifying pre-hepatic encephalopathy. Subjects and Methods: A total of 15 normal male or female, aged 32 to 60 years old. 45 cases of cirrhosis with different gender and etiology, aged from 34 to 54 years old. Among the 45 patients, 29 had encephalopathy and 16 had no encephalopathy. 20 cases of hepatic encephalopathy were spontaneous, no obvious incentive. In 1 hour to sick