创伤后应激障碍患者视觉和听觉诱发电位研究

目的：探讨军人创伤后应激障碍(PTSD)患者视觉诱发电位(VEP)和听觉诱发电位(AEP)的变异及其临床应用价值。方法：应用脑诱发电位仪、症状自评量表(SCL-90)和事件影响量表(IES)对58例军人PTSD患者(患者组)和52名健康军人(对照组)进行VEP和AEP检测以及SCL-90和IES评定，并于治疗3．5个月时进行临床随访。结果：患者组治疗前与对照组比较，VEP的Cz脑区P2和Pz脑区P3波幅显著降低，AEP的Cz脑区P2波幅降低、P3波幅显著增高，Pz脑区P2潜伏期显著延迟；SCL-90总分与IES总分及其大部分因子分显著升高。患者组治疗后，VEP和AEP的变异指标以及SCL-90与IES总分及其各因子分均恢复至正常值范围内；治疗前后VEP和AEP指标变异的差值分别与部分精神症状的减分率呈显著性相关。结论：PTSD患者诱发电位变异特点与精神症状改善相关，有一定的临床应用价值。     

创伤后应激障碍的睡眠障碍

尽管睡眠障碍在精神疾病中非常常见，但他常常被当作精神疾病的二级症状，认为对其主要精神疾病的治疗才是缓解睡眠苦恼的最可行办法。事实上，比如创伤后应激障碍(PTSD)的噩梦并不随总症状评分的下降而减少，有时可持续很长时间，而采用针对睡眠紊乱的治疗方案后，超过50％患者的创伤后应激症状可得到有效缓解。现论述PTSD对睡眠的影响，并讨论睡眠紊乱的治疗问题。     

创伤后应激障碍的心理治疗

心理治疗被认为是创伤后应激障碍(PTSD)的首选治疗方案.根据目前的理论解释和文献研究,认知行为治疗技术如暴露治疗、焦虑管理训练、认知治疗等对PTSD比较有效.眼动脱敏和再加工 治疗方法可能对PTSD有效,但需要进一步的研究支持.本综述从理论解释、具体方法、效果研究和治疗原则等方面介绍PTSD的心理治疗技术.     

创伤后应激障碍

本文介绍创伤后应激障碍及其有关的几个问题。     

创伤后应激障碍的神经生物学机制

美国精神障碍诊断与统计手册第4版(DSM-Ⅳ)关于创伤后应激障碍(PTSD)的定义中所述及的症状是因为中枢神经系统对应激信息的记忆过程出现了障碍，使条件化的恐惧反应难于抑制或过分抑制所致。目前关于其产生机制包括以下方面：     

军人创伤后应激障碍患者脑干听觉反应的对照研究

目的　探讨军人创伤后应激障碍 (PTSD)患者脑干听觉反应 (ABR)的特点。方法　对 36例PTSD患者和 4 0名健康军人 (对照组 )应用美国NicoletBravo脑电生理仪 ,采用Click短声刺激进行ABR测查。结果　与对照组比较 ,PTSD组的Pz脑区波V绝对潜伏期延迟 (t=4 .5 2 ,P <0 .0 1) ,OZ 脑区波V绝对潜伏期前移(t=4 .5 1,P <0 .0 1) ,OZ 脑区波Ⅱ绝对波幅与PZ 脑区波Ⅳ绝对波幅均降低 (t =5 .5 6和t =5 .5 9,均P <0 .0 1)。结论　ABR对临床辅助诊断PTSD有一定参考价值     

癌症与创伤后应激障碍

严重威胁生命的恶性疾病如癌症所导致的创伤后应激障碍（ＰＴＳＤ）越来越引起临床医生的重视,国外不少精神科医生致力于与癌症相关ＰＴＳＤ的临床研究,积累了一些经验,本文就此做一综述。     

创伤后应激障碍

本综述了创伤后应激障碍的病因学、临床特征及治疗方面的新进展。     

军人创伤后应激障碍患者认知性电位变化及其与精神症状的关系

目的　探讨军人创伤后应激障碍(PSTD)患者认知性电位(CEP)的特征和治疗缓解后变化及其与精神症状的关系。方法　应用美国Nicolet Bravo型脑诱发电位仪,对 66 例发病期及其 60 例康复期 PTSD患者进行关联性负变(CNV)、视觉诱发电位(VEP)和听觉诱发电位(AEP)测定,并进行症状自评量表(SCL -90)和事件影响量表(IES)评定。结果　患者组发病期与对照组比较,CNV/M1、VEP/P2 和 AEP/N2 潜伏期延迟(P<0.01或0.05),CNV/M2 和AEP/P3 波幅增高(P<0.01),命令信号后负变化(PINV)出现率增高(P<0.01),SCL-90和IES总分及其部分因子分升高(P<0.01),且 CEP指标与 SCL 90 及 IES总分及其部分因子分显著相关(P<0.01 或 0.05)。患者组康复期 CNV/M1、VEP/P2 和 AEP/N2 潜伏期,CNV/M2、AEP/P3 波幅,PINV出现率以及SCL- 90和IES总分及其部分因子分均恢复至正常值内(与发病期比较P<0.01或0.05,与对照组比较 P>0.05)且治疗前后 CEP指标差值与 SCL 90 及 IES总分及其部分因子减分率显著相关(P<0.01或0.05)。结论　CNV、VEP与AEP的变化可能是PTSD的状态标志。     

Hippocampal subfield alterations in pediatric patients with post-traumatic stress disorder

The hippocampus, a key structure with distinct subfield functions, is strongly implicated in the pathophysiology of post-traumatic stress disorder (PTSD); however, few studies of hippocampus subfields in PTSD have focused on pediatric patients. We therefore investigated the hippocampal subfield volume using an automated segmentation method and explored the subfield-centered functional connectivity aberrations related to the anatomical changes, in a homogenous population of traumatized children with and without PTSD. To investigate the potential diagnostic value in individual patients, we used a machine learning approach to identify features with significant discriminative power for diagnosis of PTSD using random forest classifiers. Compared to controls, we found significant mean volume reductions of 8.4% and 9.7% in the right presubiculum and hippocampal tail in patients, respectively. These two subfields’ volumes were the most significant contributors to group discrimination, with a mean classification accuracy of 69% and a specificity of 81%. These anatomical alterations, along with the altered functional connectivity between (pre)subiculum and inferior frontal gyrus, may underlie deficits in fear circuitry leading to dysfunction of fear extinction and episodic memory, causally important in post-traumatic symptoms such as hypervigilance and re-experience. For the first time, we suggest that hippocampal subfield volumes might be useful in discriminating traumatized children with and without PTSD.     

脑干听觉诱发电位在小脑卒中应用的价值探讨

对２８例小脑卒中患者进行脑干听觉诱发电位（Ｂｒａｉｎｓｔｅｒｎａｕｄｉｔｏｒｙｅｖｏｋｅｄｐｏｔｅｎｔｉａｌ，ＢＡＥＰ）检测研究，其中小脑出血１９例，小脑梗塞９例，结果发现：ＢＡＥＰ在小脑卒中的异常为８５．７１％，且主要发生在病灶侧，部分病例可累及双侧。主要以Ⅲ，Ⅴ波ＰＬ及Ｉ～Ⅲ，Ｉ～ⅤＩＰＬ延长，ＢＡＥＰ在出血及梗塞的定性上无参考价值，随着病情的好转，ＢＥＡＰ亦逐渐恢复正常。     

Electroencephalogram and brainstem auditory evoked potential in 539 patients with central coordination disorder

BACKGROUND： Electroencephalogram （EEG） and brainstem auditory evoked potential （BAEP） are objective non-invasive means of measuring brain electrophysiology. OBJECTIVE： To analyze the value of EEG and BAEP in early diagnosis, treatment and prognostic evaluation of central coordination disorder. DESIGN, TIME AND SETTING： This case analysis study was performed at the Rehabilitation Center of Hunan Children＇s Hospital from January 2002 to January 2006. PARTICIPANTS： A total of 593 patients with severe central coordination disorder, comprising 455 boys and 138 girls, aged 1-6 months were enrolled for this study. METHODS： EEG was monitored using electroencephalography. BAEP was recorded using a Keypoint electromyogram device. Intelligence was tested by professionals using the Gesell scale. MAIN OUTCOME MEASURES： （1） The rate of abnormal EEG and BAEP, （2） correlation of abnormalities of EEG and BAEP with associated injuries, （3） correlation of abnormalities of EEG and BAEP with high risk factors. RESULTS： The rate of abnormal EEG was 68.6% （407/593 patients）, and was increased in patients who also had mental retardation （P 〈 0.05）. The rate of abnormal BAEP was 21.4% （127/593 patients）. These 127 patients included 67 patients （52.8%） with peripheral auditory damage and 60 patients （47.2%） with central and mixed auditory damage. The rate of abnormal BAEP was significantly increased in patients who also had mental retardation （P 〈 0.01 ）. Logistic regression analysis showed that asphyxia （P 〈 0.05）, jaundice, preterm delivery, low birth weight and the umbilical cord around the neck were closely correlated with abnormal EEG in patients with central coordination disorder, lntracranial hemorrhage, jaundice （P 〈 0.05）, low birth weight and intrauterine infection （P 〈 0.05） were closely correlated with abnormal BAEP in patients with central coordination disorder. CONCLUSION： Central coordination disorder is often associated with abnormal EEG an     

Prevalence of post-traumatic stress disorder in incarcerated juvenile delinquents in Japan

The present study investigated frequency of post-traumatic stress disorder (PTSD) in incarcerated juvenile delinquents in Japan. The presence of overwhelming traumatic experiences, which fulfilled the DSM-IV criterion A for PTSD, was evaluated using a self-report questionnaire in 251 delinquents (206 males and 45 females). The structured interview using the Clinician-administered PTSD Scale for DSM-IV (CAPS) was administered to those with the experiences. A substantial portion (36%) of the delinquents reported experiences of exposure to such overwhelming traumatic events, which fulfilled the criterion A. Among those who met the criterion A, 48 subjects (40 males and eight females) received the CAPS interview. Ten (21%) out of 48 were diagnosed with current or past history of full PTSD. Three subjects out of the 10 were currently diagnosed with full PTSD. Another 10 subjects out of 48 (21%) had fulfilled the criteria for current or past history of partial PTSD. Among the 10, one was diagnosed as currently suffering from partial PTSD. In females, frequencies of the past history were quite high (50% for full PTSD and 25% for partial PTSD in the eight subjects), while none was currently diagnosed with PTSD.     

Predicting treatment outcome on three measures for post-traumatic stress disorder

The aim of the present study was to investigate predictors of treatment outcome for Post-traumatic Stress Disorder (PTSD) after treatment completion and at 15-months follow-up (n = 48), in a trial of Eye Movement Desensitisation and Reprocessing (EMDR) versus Imaginal Exposure and Cognitive Restructuring (E+CR). Factors associated with treatment outcome were investigated using regression analyses with the mean change scores in three assessor and self-rated PTSD symptomatology measures, including the Clinician-Administered PTSD Scale (CAPS), the Impact of Events Scale (IES) and the PTSD Symptom Checklist (PCL) from pre- to post-treatment and pre-treatment to follow-up as the dependent variables and demographics, trauma, clinical and personality measures as independent variables. Irrespective to outcome measures and assessment points it was found that four variables were able to predict significantly treatment outcome. These included baseline PTSD symptomatology, number of sessions, gender and therapy type. Overall, our results showed that it is difficult to use pre-treatment variables as a powerful and reliable tool for predicting treatment outcome, as significant predictors were found to be sample-specific and outcome measure-specific. Clinical relevance of the present results and directions for future research are discussed.     

Brain function in patients with cerebral fat embolism evaluated using somatosensory and brain-stem auditory evoked potentials

Summary In two victims of traffic accidents with broken bones and fat embolism, serial recordings of somatosensory evoked potentials (SEPs) and brain-stem auditory evoked potentials (BAEPs) were examined to assess brain function. Initial SEPs and BAEPs revealed normal subcortical components, while the late cortical components of SEPs were abolished, findings indicative of diffuse dysfunction of grey rather than of white matter. As the neurological functions became normal, the late components appeared. It is concluded that while absent late components of SEPs do reflect cortical dysfunction, they are not necessarily associated with a poor prognosis. Repetitive recordings of SEPs appear to be a useful tool for assessing the neurological condition and the prognosis of patients with cerebral fat embolism.     

听觉诱发电位及体感诱发电位在颅脑外伤致昏迷患者的应用

严重颅脑损伤昏迷患者脑功能的监测是判断预后和指导治疗的重要手段。听觉诱发电位(BAEP)及体感诱发电位(SSEP)因其方便、无创并能连续实时监测昏迷患者相关神经传导通路电生理的变化,间接反映脑干上行激活系统、大脑皮层结构与功能的完整性,越来越成为临床对严重颅脑损伤昏迷患者预测预后和指导治疗的重要手段。本文就近年来相关研究进行综述,旨在指导临床实践。