单肺通气时肺内分流与PETCO2的相关性研究

目的：研究单肺通气时PETCO2和Qs/Qt之间的关系。方法：选择28例择期开胸手术的患者分别于TLV 20min、OLV 5min、15min、30min、60min测动脉血和混合静脉血气并同时记录PETCO2,计算Qs/Qt,进行统计学处理。结果：OLV时不同时段PETCO2、PaCO2、Qs/Qt比TLV时增大(P＜0.05),TLV时PETCO2与Qs/Qt不相关(r=-0.0230,P=0.9077)。OLV时PETCO2与Qs/Qt相关(r=0.4739,P=0.00001),其直线回归方程为y=3.4862+0.0147x(y=PETCO2,x=Qs/Qt)。结论：OLV时PETCO2与Qs/Qt呈直线相关,PETCO2随Qs/Qt增加而增大。     

英汉颜色词差异浅探

英、汉语分属两种不同的语系 ,受语言与文化特殊性的影响 ,人们对色彩的感受和赋予颜色词的意义也各不相同。翻译时 ,不可望文生义 ,“对号入座” ,必须在充分了解中西方文化差异的基础上 ,准确把握颜色词所处的语境 ,力求做到信、达、雅     

癫痫大鼠脑组织内免疫反应特点研究

目的研究脑“免疫特免性”与癫痫发病的关系。方法用免疫细胞化学法观察IgG免疫反应阳性(IgG-IR)细胞在两种不同处理程序的正常成年、癫痫及尼莫地平作用下癫痫大鼠脑组织内分布情况。结果灌注大鼠,除癫痫组个别脑片散在弱IgG-IR细胞外,其余均阴性;未灌注大鼠,各组脑片均散布IgG-IR细胞;癫痫大鼠脑组织IgG-IR细胞分布较正常组增多(p<0.01);尼莫地平作用下癫痫大鼠脑组织内IgG-IR细胞分布与正常组比较无显著差异。结论脑“免疫特免性”在癫痫发病中具有一定意义。     

胸段硬膜外麻醉对单肺通气肺内分流的影响

目的：研究胸段硬膜外麻醉对单肺通气（ＯＬＶ）时肺内分流（Ｑｓ／Ｑｔ）的影响。方法：选择２８例择期开胸手术病人,分为安氟醚静吸复合全麻加胸段硬膜外麻（ＴＥＡ;Ｔ４～５或Ｔ５～６,１．４％利多卡因）ＯＬＶ组（实验组）和安氟醚静吸复合全麻ＯＬＶ组（对照组）,各１４例。分别于麻醉前、双肺通气１５ｍｉｎ、ＯＬＶ５,１５,３０,６０ｍｉｎ分别抽动脉血和混合静脉血行血气分析,计算Ｑｓ／Ｑｔ。结果：实验组和对照组     

血清总胆汁酸测定在肝脏疾病中的临床价值

目的 为探讨血清总胆汁酸测定对肝病的诊断意义。方法 采用酶耦联比色法检测１１９例各种肝病患者血清总胆汁酸水平。结果 显示急性为、慢性肝炎、重型肝炎、肝硬化、肝癌及脂肪肝患者血清胆汁酸水平均明显高于正常对照组。肝硬化患者血清总胆汁酸异常率为９４．３％,高于其它肝功能指标异常率,且与血清白蛋白呈负相关。结论提示血清总胆汁酸是一项较灵敏的肝功能指标,尤其是在肝功能常规指标改变不明显时,对各种肝病特别 硬     

QT Dispersion Level and Its Clinical Significance.in Dilated Cardiomyopathy

［1］Richardson CP, Mckenna RM, Bristow CM, et al.Report of the 1995 Word Health Organization/International Society and Federation of Cardiology Task Force on the definition and classification of cardiomyopathies. Circulation, 1996,93: 841 ［2］Barr CS, Naas A, Freeman M, et al. QT dispersion and sudden unexpected death in chronic heart failure. Lancet, 1994,343:327 ［3］Martin AB, Garson A, Perry JC, et al. Prolonged QT interval in hypertropic and dilated cardiomyopathy in children. Am Heart J, 1994,127(1):64 ［4］Pye M, Quinn AC, Cobble SM. QT dispersion: a non-invasive marker of susceptibility to arrhythmia in patients with sustained ventricular arrhythmias?Br Heart J, 1994,71(5):51 ［5］Berger RD, Kasper EK, Baughman KL, et al. Beat to beat QT interval variability: novel evidence for repolarization lability in ischemic and non ischemic dilated cardiomyopathy. Circulation, 1997, 96 (5):1557 ［6］Wolfram G, Ulrike S, Volker M, et al. QT dispersion and arrhythmic events in idiopathic dilated cardiomyopathy. Am J Cardiol, 1997,78: 458 ［7］Fei L, Goldman JH, Prasal K, et al. QT dispersion and RR variations on 12-lead ECGs in patients with congestive heart failure secondary to idiopathic dilated cardiomyopathy. Eur Heart J, 1996,17: 258 ［8］Pan YZ, Guo NS, Xing ZF, et al. The relation between QT dispersion and ventricular arrhythmia of dilated cardiomyopathy. Chin J Inter Medi, 1996,35(11):73 ［9］Galinier M, Vialette JC, Fourcade J, et al. QT interval dispersion as a predictor of arrhythmic events in congestive heart failure. Importance of aetiology. Eur Heart J, 1998,19(7) :1054     

胸部肿瘤患者手术前后血清STNFRI含量变化的分析

目的 研究胸部肿瘤患者手术前后STNFRI在血清中的变化。方法 采用ELISA方法测定了46例食管癌,32例贲门癌,80例肺癌,14例非肿瘤患者,61例志愿健康成年人。结果 胸部肿瘤患者中可溶性肿瘤坏死因子（STNFRI）的平均水平明显高于健康对照组和非肿瘤组。按肿瘤的TNM分期,STNFRI手术前后的值和升高幅度与疾病分期明显相关,与病理类型无关（P＜0．01）。结论 在排除自身免疫疾病和感染,STNFRI的测定对肿瘤的诊断、筛选、预后有辅助意义。     

促肾上腺皮质激素对改进的炎性痛大鼠脑、脊髓内CGRP的影响

目的 观察腹腔注射促肾上腺皮质激素（ＡＣＴＨ）对改进的完全佐剂性关节炎慢痛大鼠脊髓腰膨大,海马和纹状体内降钙素基因相关肽（Ｃａｌｃｉｔｏｎｉｎ ｇｅｎｅ－ｒｅｌａｔｅｄ ｐｅｐｔｉｄｅ,ＣＧＲＰ）的影响。方法 （１）肾上腺摘除术。（２）ＣＧＲＰ放射免疫法。结果 （１）大鼠踝关节周围皮下注射自制的油包水型完全福氏佐剂成功地制备成一种全身反应较轻的慢性疼痛模型。（２）脊髓腰膨大中的ＣＧＲＰ在关节炎大鼠     

基于改进TransUnet网络的血管内超声图像边界提取方法研究

血管内超声(IVUS)图像是观测血管内部结构的首选影像学手段,基于IVUS图像的内膜和中外膜边界的提取是实现冠脉粥样硬化精准诊断的前提和关键。针对IVUS图像结构复杂、对比度低、边界提取困难等问题,本研究提出一种基于改进TransUnet网络的分割方法。首先,针对IVUS图像边界提取难点,对边血管、血管分叉、导丝伪像、阴影等4种图像结构进行建模,并基于建模结果予以定向数据增强;而后,结合IVUS图像的环状结构分布特点,在TransUnet网络中提出了Polar-bias归纳偏置的策略,并对IVUS图像进行像素级的分类;最后,基于分类结果优化GVF snake模型的外力场,进而提取IVUS图像的内膜和中外膜边界。采用国际标准IVUS图像数据集(两组不同中心频率,共512幅图像)对算法进行评测,引入JMard距离(JM),Hausdorff距离(HD)和面积差异百分比(PAD)等3个评测指标,在数据集A中JM为0.87, HD为0.87, PAD为0.18,数据集B中JM为0.91, HD为0.25, PAD为0.08。实验结果表明,所提出的算法在两组数据集的内膜及中外膜提取问题中的表现均...     

Adverse childhood experiences and the development of Down syndrome regression disorder

Down syndrome regression disorder (DSRD) is a clinical symptom cluster of acute or subacute neurocognitive regression in otherwise health persons with Down syndrome. The objective of this study was to evaluate if adverse childhood experiences (ACEs) were more prevalent in children with DSRD than those with DS alone. A survey-based, cohort-based study was performed. Caregivers of individuals with DSRD with onset of symptoms between age 10 and 30 years and DS alone were administered the ACEs questionnaire via an online REDCap survey. A total of 159 responses were collected after excluding incomplete surveys and those not meeting criteria for DSRD. Individuals with DSRD were not more likely to experience ACEs (p = 0.18, 95% confidence interval [CI]: 0.43–1.17). In those with ACEs prior to the onset of symptoms, the median time prior was 7 months (interquartile range: 5–10). Individuals with DSRD were more likely to report three or more ACEs (52, 33%) compared to those with DS alone (39, 22%) (p = 0.02, 95% CI: 1.08–2.87). Exposure to ACEs were not predictive of response to particular therapeutic interventions although those with multiple ACEs 3 months prior to the onset of symptoms was associated with lower response rates to benzodiazepines and immunotherapy (p = 0.02, 95% CI: −3.64–−1.13). This study provides preliminary data that individuals with DSRD experience ACEs at a similar rate to individuals with only DS alone, although three or more ACEs, often preceding the onset of symptoms, was more prevalent in individuals with DSRD.