治疗管道在危重病人护理中的准确应用

目的：探讨在危重病人护理中正确使用各种治疗管道。方法：对近3年来我科运用治疗管道护理危重病人的临床观察与总结。结果：影响管道护理的因素归纳为插管的深浅度、插管动作的轻稳程度、插管的清洁维持度、护理人员的临床观察程度等。结论：找出有效对策保证管道护理达到最佳的效果。     

种植体支抗在正畸矫治过程中的初始应力分析

目的:观察应用弹性橡皮链或T形曲内收尖牙时,种植体支抗的初始应力分布,为临床治疗过程中系统的施力设计提供生物力学依据.方法:实验于2007-01/05在沈阳交通勘探设计院完成.选取成年男性右上颌后牙缺失病例,知情同意参加本实验.螺旋CT扫描, 将CT片输入计算机,利用Auto CAD4.0绘图软件及Sap93有限元软件,建立上颌骨后牙区的三维有限元模型.实验模拟口腔固定矫治器, 采用二种方式(弹性橡皮链或T形曲)内收尖牙.加力部位为距离种植体顶端2 mm处的颊面中央,相当于颊面管的位置,种植体受到向近中的牵引力.施加6组载荷,前2组模拟弹性橡皮链,其他4组模拟T形曲.分析在不同力和力矩作用下种植体近中表面各断面上节点的主应力值.结果:F=1.96 N时,最大主应力为2.505 N/mm2.F=4.9 N时,最大主应力为5.595 N/mm2.单一力作用下,种植体近中均为压应力.应力分布不均匀,最大主应力位于颈部第一螺纹(颈缘根方 1.2 mm)处,根端为0.力与力矩共同作用时,随M/F值增大,种植体近中应力值亦逐渐增大,且主要为拉应力分布.M/F=26.4时,最大主应力为2.206 N/mm2.M/F=6.1时,最大主应力为0.335 N/mm2,应力值最低且分布最均匀.结论:最高应力集中于种植体颈缘,当应用骨内种植体作为支抗单元时,最好使用 T形曲,并预先设定好其M/F值.     

种植体支抗在正畸矫治过程中的初始应力分析

BACKGROUND： Recent research indicates that if a stroke can be effectively treated within three hours, prognosis is improved. Therefore, it is necessary to properly educate stroke patients＇ relatives about prevention and treatment. OBJECTIVE： To survey and analyze the present awareness of stroke prevention and treatment knowledge among patients＇ relatives. DESIGN： Cross-sectional study. SETTING： Beijing Hospital and Medical College of Shandong University and Harrison International Peace Hospital, the Affiliated Hospital of Hebei Medical University. PARTICIPANTS： From May 2005 to November 2006, a ＂stroke awareness＂ questionnaire survey was performed in four hospitals, including Harrison International Peace Hospital in Hengshui City （third class, first grade）, Fucheng County People＇s Hospital （second class, first grade）, Zaoqiang County Jiahui Countryside Hospital （first class, first grade） and Hengshui City Electricity Industry Bureau Infirmary. The participants provided confirmed consent. METHODS： The ＂stroke awareness＂ questionnaire included 10 questions： 1 -8 were related to the understanding of stroke, 9 and 10 were related to behavior and attitude towards medical treatment. Demographic information was also collected on each participant, including age, education level, and occupation. Each positive answer accounted for one point. A score of 8 or higher was categorized as ＂good stroke awareness＂. MAIN OUTCOME MEASURES： Scores of stroke awareness. RESULTS： A total of 4 000 ＂stroke awareness＂ questionnaires were printed and distributed. 3 597 copies were completed and 3 468 were included in the study. （1） Relative factors of stroke awareness： The survey demonstrated that the participant＇s age, educational level, occupation, grade of hospital, and the relationship with the patient had a significant effect on their stroke awareness （P 〈 0.05-0.01）. （2） Stroke knowledge： With regard to stroke awareness, 72% subjects did not know the signs indicat     

基于SciMAT的国际医学信息学主题动态演进研究

目的:对国际医学信息学主题动态演进进行研究,揭示该领域的发展脉络.方法:以Web of Science中1991-2020年发表的有关国际医学信息学的5219篇文献为研究对象,运用SciMAT软件得到以关键词为表征的关键词覆盖图、主题战略坐标图和主题演化路径图,并对各研究时区主题战略坐标和主题演化进行分析.结果:近30...