脑功能状态指数(CSI)在全麻中作为镇痛深度监测的实验研究

目的研究应用靶控输注瑞芬太尼和丙泊酚时脑功能状态指数（CSI）是否可以作为镇痛深度监测的指标。方法选择50例腹腔镜下胆囊切除全麻手术患者。全麻诱导和维持使用丙泊酚、维库溴铵和瑞芬太尼。记录病人的基础血压、心率、血氧饱和度、CSI、BIS值变化,观察插管前后及切皮前后血压、心率、血氧饱和度、CSI、BIS值。结果气管插管前后和切皮刺激前后的心率、收缩压相比较有显著性差异;对于气管插管前后和切皮刺激前后的BIS、CSI值各自比较无显著性差异。结论 CSI不能用于患者术中镇痛深度即对伤害性刺激反应的监测。     

Purification of bovine conglutinin using pepsin digestion

This paper describes a new method for the purification of bovine conglutinin based on the relative resistance of this protein to pepsin digestion. First, conglutinin is purified by absorption on yeast, then the preparation is treated with 2% pepsin (w/w) at 4°C for 18 hr, and finally gel filtrated on agarose A5m. The yield is 60–75% and conglutinin thus prepared appears physically, immunochemically and functionally intact. This procedure allows for a rapid production of sufficient amounts of conglutinin for immune complex detection or purification methods.     

Reward bias and lateralization in gambling behavior: behavioral activation system and alpha band analysis

The present research explored the main factors that can influence subjects’ choices in the case of decisions. In order to elucidate the individual differences that influence the decisional processes, making their strategies more or less advantageous, we tested the effect of a reward sensitivity in the behavioral activation system (BAS-Reward) constructed on the ability to distinguish between high- and low-risk decisions. Secondly, the lateralization effect, related to increased activation of the left (BAS-related) hemisphere, was explored. Thirty-one subjects were tested using the Iowa Gambling Task, and the BAS-Reward measure was applied to distinguish between high-BAS and low-BAS groups. Behavioral responses (gain/loss options) and alpha-band modulation were considered. It was found that high-BAS group increased their tendency to opt in favor of the immediate reward (loss strategy) rather than the long-term option (win strategy). Secondly, high-BAS subjects showed an increased left-hemisphere activation in response to losing (with immediate reward) choices in comparison with low-BAS subjects. A “reward bias” effect was supposed to explain both the bad strategy and the unbalanced hemispheric activation for high-BAS and more risk-taking subjects.     

地佐辛对宫颈癌手术患者全麻恢复期BIS及苏醒质量影响的研究

目的:研究地佐辛对宫颈癌手术患者全麻恢复期脑电双频指数(BIS)和苏醒质量的影响.方法:将本院收治的80例行宫颈癌手术的患者随机分为A组与B组,每组40例;A组为对照组,在手术前20min给予生理盐水5 mL,B组为实验组,给予地佐辛0.1 mg/kg.记录A、B两组术前(T0)、气管插管时(T1)、气管拔管后1 min(T2)、5 min(T3)、10 min(T4)的BIS、MAP、HR和SpO2值,以及睁眼时间、定向力恢复时间、芬太尼用量、VAS评分以及躁动情况.结果:两组在各时间点的BIS、SpO2比较,差异均无统计学意义(P＞0.05);与T0时刻相比,两组BIS其它各时刻均明显降低;A组各时刻与T0时刻相比,MAP值明显升高,HR明显加快,差异具有统计学意义(P＜0.05);B组与A组相比较,各时刻与T0时刻相比,MAP值明显降低,HR明显减慢,差异具有统计学意义(P＜0.05);A组睁眼时间、定向力恢复时间较B组长、A组VAS评分较B组高,差异具有统计学意义(P＜0.05);两组躁动情况比较,差异无统计学意义(P＞0.05).结论:宫颈癌手术中使用0.1 mg/kg的地佐辛对手术患者全麻恢复期BIS无影响,且提高苏醒质量.     

精神分裂症患者内隐攻击性对照研究

目的：探讨精神分裂症患者的内隐攻击性,为临床干预提供依据。方法将216例精神分裂症患者设为患者组,112名健康志愿者设为对照组。采用偏好组词法测评两组内隐攻击性,采用暴力攻击行为筛查标准筛查患者组的暴力行为,采用简明精神病量表评定患者的精神症状,冲动性量表、攻击性量表评定患者的冲动攻击性人格特点。结果有暴力攻击行为组简明精神病量表总分、思维障碍、激活性、敌对猜疑及行为紊乱因子分均显著高于无暴力攻击行为组（P＜0．05或0．01）,冲动性量表总分及行动分量表因子分显著高于无暴力攻击行为组（P＜0．01）,攻击性量表总分及各因子分均显著高于无暴力攻击行为组（ P＜0．05或0．01）。患者组与对照组及有暴力攻击行为组与无暴力攻击行为组偏好组词法测评攻击性词及身体攻击性词和语言攻击性词评分比较差异均无显著性（P＞0．05）。结论精神分裂症患者较正常人有更多的暴力攻击行为,其原因是由精神症状及性格缺陷所致。     

Correlation of risk-taking propensity with cross-frequency phase–amplitude coupling in the resting EEG

Objective

Recent evidence has suggested that the weak inhibitory influence of the prefrontal cortex on the subcortical structures may be responsible for risk-taking behaviour. The aim was to determine the possibility that this weakness in top-down control is reflected in changes in the cross-frequency phase–amplitude coupling (CFPAC) in the electroencephalography (EEG).

Methods

Nineteen-channel EEGs were recorded from 50 healthy volunteers with their eyes closed before risk-taking propensity was assessed by behavioural measures, the domain-specific risk-taking (DOSPERT) scale and the Barrett impulsiveness scale (BIS). Correlation analyses between the CFPACs and the behavioural measures were performed.

Results

The CFPACs were negatively correlated with the risk-taking DOSPERT and BIS scores in frontal (Fp2) and centro–parietal (C3, C4 and P4) regions. By contrast, the CFPACs were positively correlated with the risk-taking DOSPERT and BIS scores in the right hemisphere (T8 and P8).

Conclusions

We suggest that frequent risk-taking behaviour is closely associated with the reduced interference of the cortical control network on the reward-oriented system. The CFPAC, which reflects the degree of interactions among functional systems, provides information about an individual’s risk-taking propensity.

Significance

The CFPAC may be a useful neurophysiological indicator of an individual’s tendency towards risk-taking behaviours, which thus potentially contributes to evaluating the severity of the psychiatric diseases exhibiting abnormal risk-taking behaviours.     

Distinct profiles of behavioral inhibition and activation system sensitivity in unipolar vs. bipolar mood disorders

Psychiatric outpatients with mood disorders (n=275) and community controls (n=733) completed a measure of Behavioral Inhibition System (BIS) and Behavioral Activation System (BAS) sensitivity; psychiatric outpatients also completed measures of mood symptom severity. All patients scored higher on BIS compared to controls; patients with bipolar disorders scored higher on BAS scales compared to patients with depressive disorders. BIS and BAS demonstrated unique patterns of association with mood symptoms. Results support the clinical utility of the BIS/BAS.     

七氟醚与异氟醚分别复合氧化亚氮全程吸入麻醉的临床应用

目的观察七氟醚与异氟醚分别复合氧化亚氮在紧闭式静吸复合全麻中的临床应用。方法选择60例ASAⅠ-Ⅱ级择期手术患者,随机分为S、I两组,每组患者均于诱导前静注咪唑安定004mg／kg＋太尼2ug／kg,1分钟后S组吸入5％七氟醚＋50％氧化亚氮,Ⅰ组吸入3％异氟醚＋50％氧化亚氮,待患者入睡后静注罗库溴铵06mg／kg,气管插管后S组继续吸入1．0-30％七氟醚＋50％氧化亚氮,I组吸入0．6～18％异氟醚＋50％氧化亚氮至术毕,同时观察各时点MAP、HR、SPO2、。BIS及吸入麻醉药浓度,手术结束观察病人苏醒及拔管时间,术后随访术中知晓、恶心、呕吐及有无其它不良反应。结果七氟醚与异氟醚分别复合氧化亚氮全程吸入麻醉,结合BIS监测指导术中用药,使诱导、苏醒迅速,麻醉过程平稳,麻醉深度易控制,对患者血流动力学影响小。结论七氟醚与畀氟醚分别复合氧化亚氮全程吸入麻醉是一种安全有效的麻醉方法,可作为临床麻醉用药的另一种选择。