计算机操作人员的职业危害——眼睛疲劳

随着计算机技术广泛运用,最近国外发现一种新的职业病——“眼睛疲劳”。据国外研究发现,一个从事计算机操作,眼睛长时间凝视荧光显示屏的妇女,当她下班行走在街上时,眼前出现一片模糊,连迎面开来的汽车都辨认不清。后来专家们对该女工所在的工厂进行调查,发现从事该项工作的人普遍有眼疲劳、流泪现象,连续工作两小时以上就头痛,4—5小时就感觉到恶心。目前专家们对荧光屏的颜色和字母大小、画面     

便携式野战真空注油设备的研制

本文将介绍在野战条件下，便携式真空注油设备，可以方便的更换X－线机球管及给变压器注油。并阐述了该设备的结构及原理。     

肾上腺组合性嗜铬细胞瘤四例报告及文献复习

Objective To discuss the clinical characteristics and management principles of com-posite pheochromoeytoma of adrenal gland (pheochromocytoma-ganglioneuroma). Methods Four cases of composite tumor of adrenal gland diagnosed pathologically were reviewed. All the cases were male, aged 37 to 62 years;three of them had the history of hypertension, one of them accompanied with paroxysmal palpitation, while one case was asymptomatic. Computerized tomography and ultra-sonography showed single tumor in adrenal, the diameter was about 2.5、3.8、6.3、15cm respectively. Two cases showed positive results in 131Ⅰ-metaiodobenzylguanidine (MIBG) scintigraphy. One case showed positive result in 99Tcm-hydrazinonicotinamide-3trysinoctreotide (HTOC) scintigraphy. Twenty-four hours urinary catecholamine examination revealed the average of norepinephrine, epi-nephrine and dopamine were (196.1±92.2)nmol/24 h, (26.6±8.9)nmol/24 h, (1957.9±913.5) nmol/24 h respectively. Two cases were at a little elevated level and the others with normal. All cases were managed with α-adrenergic receptor blocker preoperatively for 2-4 weeks. Results Tumor re-section was performed in all 4 cases, and 3 cases by retroperitoneal laparoscopy, one by open surgery. All 4 cases were diagnosed as composite pheochromocytoma of adrenal (Pheochromocytoma-gangli-oneuroma) by pathology. All patients had no evidence of recurrence or metastasis during follow-up from 15 to 38 months. Two of three cases with hypertension reverted to normotensive. Conclusions Composite pheochromocytoma of adrenal is rare, difficult to be diagnosed preoperatively. Except mild in eatecholamine secretion, which clinical manifestations are similar to pheochromocytoma. Pheochro-mocytoma-ganglioneuroma is no apparent tendency for aggressive behaviors, the results of surgical management are favorable.     

免疫接种“麻风腮”疫苗的健康教育效果评价和行为干预的体会

麻疹、腮腺炎、风疹三联减毒活疫苗(简称“麻风腮”疫苗，英文商品名：M—M—RⅡ)是一种无菌冻干制品，通过皮下注射使用。适用于在12个月或以上个体，能够同时对麻疹、腮腺炎和风疹产生免疫。麻疹、腮腺炎和风疹是三种常见的儿童疾病，分别是由麻疹病毒、腮腺炎病毒(副粘病毒)和风疹病毒(粘膜病毒)引起，可以导致严重的并发症或死亡。     

小脑延髓池的显微外科解剖研究

目的研究小脑延髓池的显微外科解剖特征,探讨其临床意义.方法选择经10%福尔马林固定成人头颈标本15例,显微镜下(5～25倍)模拟枕下极外侧入路、颈-乳突入路和耳前颞下窝入路的手术操作,分别自后、侧和前方显露小脑延髓池内结构,详细观测其神经血管结构的形态特征.结果小脑延髓池位于延髓外侧,上至桥延沟,下达枕骨大孔,侧方沿枕骨形成蛛网膜袖套进入颈静脉孔和舌下神经管.舌咽神经、迷走神经和副神经的根丝自上而下起自橄榄体背侧、延髓和脊髓的后外侧沟,根丝逐级汇合后分别进入舌咽神经道和迷走神经道.椎动脉于小脑延髓池的下端入颅后经该池行向前上内进入延髓前池.小脑下后动脉(PICA)可分为延髓前段、延髓侧段、扁桃体延髓段、脉络膜扁桃体段和皮质段.主要的静脉有小脑延髓裂内静脉、延髓静脉、小脑岩面下组静脉和岩下桥静脉.结论小脑绒球和Luschka孔脉络丛复合体及颈静脉孔硬膜返折可作为辨认舌咽神经脑池段的解剖标志,深刻认识小脑延髓池的蛛网膜界限对手术处理累及小脑延髓池的不同性质病变,保护重要神经功能意义重大.     

弥漫性轴突损伤的磁共振氢谱的变化

弥漫性轴突损伤(Diffuse axonal injury，DAI)普遍存在于各种程度的颅脑损伤中。脑白质中轴突的广泛断裂在重型颅脑损伤病例占50％以上，而在轻度颅脑损伤中仍占30％，检查轴突损伤在了解外伤性脑损害中具有重要的意义。但是如何在活体中检测轴突的病理改变相当困难，虽然明显的病理改变能被传统的影像学(CT或T1、T2加权像MRI)证实，     

内镜检查大肠癌170例临床分析

我院1991～2002年开展大肠镜检查1 653例.其中经病理及手术确诊为大肠癌的170例,现分析如下.     

由Valiolamine制备伏格列波糖

Valiolamine和1,3-二羟基丙酮在Pd/C作用下催化氢化得到伏格列波糖,收率75%.     

双降茶治疗高脂血症43例疗效观察

我院于1985年应用双降茶治疗高脂血症,发现有一定的降血脂作用,现介绍如下。一、治疗方法: (一)本组经检查确诊为高脂血症者43例,其中男40例,女3例;年龄41～61岁,平均52.5岁。本组均住院治疗,服此药期间停用其它降血脂及扩张血管等药物。治疗前后分別取空腹静脉血,测定血清三酸甘汕脂(TG)(乙酰丙酮法),血清总胆固醇(TC)(改良扎克氏法)。TG正常值为小于160mg/dl;