利多卡因、安定预防人工流产反应80例

目的　减轻人工流产时孕妇的疼痛 ,消除紧张情绪 ,预防术后并发症的发生。方法　设实验组 (术前用药 )与对照组 (术前不用任何药物 )。结果　实验组受术者术中疼痛明显轻于对照组 (P <0 .0 5) ,实验组无一例发生人工流产综合征 ,吸宫不全发生率明显低于对照组。结论　方法简便、安全 ,能有效的减轻受术者的痛苦 ,预防术后并发症的发生。     

氟伐他汀对心脑血管疾病患者血浆脂蛋白(a)、氧化低密度脂蛋白及一氧化氮的影响

对 175例心脑血管病变患者检测血浆脂蛋白 (a) [L p(a) ]、氧化低密度酯蛋白 (OXL DL )和一氧化氮(NO)的含量并与年龄相匹配的健康老年人及服用氟伐他汀前后的血浓度进行对比 ,结果表明 ,观察组 L p(a)、OXL DL;较对照组增高 ,NO较对照组下降 (P<0 .0 5 ) ;氟伐他汀使用前后对照 ,用药后 L p(a)、OXL DL 减低 ,NO增高 ,前后比较差异显著 (P<0 .0 5 )。 L p(a)、OXL DL和 NO可预示动脉粥样硬化的存在 ,氟伐他汀酶确具降脂作用。     

双极人工股骨头置换术治疗高龄股骨颈骨折

目的 通过对６６例７０岁以上老年人股骨颈骨折临床分析,探讨其手术可行性、术式选择。方法 回顾分析患者的术前并存症、术前准备、术式选择、麻醉方式、术中情况、术后处理及随诊情况。结果 本组无术中死亡病例,平均住院２８天,平均随访２６个月。良好率６３．６％。结论 ７０岁以上老人股骨颈骨折行双极股骨头置换术治疗是可行的。     

人工义眼台治疗眼窝凹陷畸形23例

目的;观察眼球摘除后羟基磷灰石义眼台植入物眼窝成形术的疗效。方法：采用巩肛 埋羟基磷灰石义眼台做为眼球摘除术后眼窝成形的填充物,观察２３例成形效果。结果：患者获得良好的义眼运动,术后并发症少,效果满意。结论：羟基磷灰石义眼台适合各种眼窝凹陷畸形患者的整形。     

基于三维图像的大脑病灶显示和分析

针对头部各组织在灰度分布上存在复杂的粘连和交错叠加现象,提出在管状加强滤波算法中增加体素亮度调和参数并与管状控制的其他参数一起共同控制管状响应值的产生,该管状加强滤波算法和其他相关切割算法通过采用GPU编程方式实现,并对脑部肿瘤的提取和显示技术进行了探讨。实验结果表明,本文方法对于脑部组织和相关病灶的分割提供可视的实时显示,对脑部疾病的微创手术和介入治疗提供图像导视。     

人工心脏圆盘泵的流动特性研究

人工心脏（血泵）一直存在泵体对血细胞剪切力过大和流速过快容易引起溶血的问题。为了研究人体正常血压情况下,血泵内部剪切力和速度场的分布情况,选择圆盘泵叶轮代替传统离心泵叶轮,对两种模型进行数值计算,分析不同叶轮内部剪切力和速度场的分布规律。研究表明传统离心泵内部流速高,叶片表面剪切力大,对血细胞的伤害大。圆盘泵相比传统离心泵,剪切力更小,流场速度分布均匀,流速更小。和传统离心泵相比,不同转速下圆盘泵能降低溶血的发生率。圆盘泵叶片数为6片时,抗溶血性能更好。研究结果为血泵的优化提供理论依据。     

Basic Science in Medical Reasoning: An Artificial Intelligence Approach

A new generation of intelligent systems is growing up in the community of Artificial Intelligence in Medicine. The main goal of these systems is the representation and use of real theory of diseases, as they are represented in medical textbooks or in scientific articles, rather than the heuristic shortcuts of human experts. In this paper, we will argue that the difficulties in the integration of basic science and clinical knowledge in intelligent systems arise from ontological differences between these kinds of knowledge and that the solution can be found in their dynamic integration during the reasoning process. In order to illustrate this point, we will first describe an epistemological analysis of the interplay between basic science knowledge and clinical knowledge, and then we will provide the example of a computational architecture implementing this view. This revised version was published online in June 2006 with corrections to the Cover Date.     

Laser energy threshold for thermal vascular injury in a port-wine stain skin model

Monte Carlo simulation of laser energy deposition in a port-wine stain (PWS) skin model and numerical solution of the thermal diffusion equation have been used to calculate threshold energies for thermal injury of PWS blood vessels for different vessel sizes and laser pulse durations. It has been assumed that an average vessel temperature rise of 65 C causes thermal injury to the blood vessel. The result is that for a certain combination of wavelength, pulse duration and incident energy density, only a limited range of blood vessel sizes can be injured optimally. Higher energy densities are required to injure smaller vessels with the same pulse duration, spot size and wavelength. This gives support to the mechanisms of selective photothermolysis suggested previously by Anderson and Parrish, although their model was based on the cooling behaviour of instantaneously heated vessels. The authors hypothesize that different laser parameter settings that match the individual PWS vessel anatomy during treatment will be used in the future, instead of many treatments with the same laser parameters. This could lead to less treatment sessions and to an improved predictability of clinical results.     

冷损伤血管NO合成酶活力的变化及其生物学意义

目的 观察不同程度冷损伤血管ＮＯ合成酶（ＮＯＳ）活力的变化,并研究超氧化物歧化酶（ＳＯＤ）和ＶｉｔＣ对这各变化影响。方法分离Ｗｉｓｔａｒ大鼠主动脉,并在ＰＢＳ培育培养１小时,然后使其暴露于－２０℃环境。以全自动生化分析仪测定血管培养液中乳酸脱氢酶（ＬＤＨ）活力,以Ｇｒｉｅｓｓ化学法观测血管ＮＯＳ活力,以肾上腺肾自氧化法血管ＳＯＤ活力。结果 当血管暴露于－２０℃环境１、２、４分钟后,血管２液中ＬＤＨ     

新型导弹驱逐舰舱室大气质量卫生学分析与评价

目的 :舰船作战性及居住性的要求及“全封闭”的环境特点 ,使舱室大气质量的卫生学分析与评价迫在眉睫。方法 :在随舰测定基础上 ,以水面舰艇舱室空气组份容许浓度标准为依据 ;应用人 -机 -环境系统工程理论 ,采用对比方法。结果 :分析归纳了舱室大气污染的主要途径及浓度变化规律 ;提出了舱室大气质量控制建议。结论 :该舰舱室大气质量符合标准。