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Bacterial Meningitis Following Spinal Anesthesia for Caesarean Section

Journal of Biosciences and Medicines 2018年第10期6卷 1-4页

作者： Qin Jian Low kuo zhau teo Seng Wee Cheo Department of Internal Medicine Hospital Sultanah Nora Ismail Batu Pahat Malaysia Department of Internal Medicine Hospital Lahad Datu Lahad Datu Malaysia

Bacterial meningitis has a potentially devastating outcome if there is any delay in diagnosis and treatment. There are multiple routes at which bacteria could migrate into the subarachnoid space. Lumbar puncture bypasses the natural defense barrier of central nervous system and therefore carries a risk of transmitting infection to the meninges. We report a case of post spinal bacterial meningitis in a post partum lady who underwent spinal anaesthesia for emergency lower segment caesarean section. She developed signs and symptoms of meningitis twenty-eight hours post procedure. Her cerebrospinal fluid (CSF) analysis was suggestive of bacterial meningitis and she made a full recovery.

关键词： Bacterial Meningitis Spinal Anesthesia Caesarean Section

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Determinants of delayed diagnosis and treatment of tuberculosis in Cambodia:a mixed-methods study

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Infectious Diseases of Poverty 2020年第3期9卷 129-129页

作者： Alvin kuo Jing teo Chetra Ork Sothearith Eng Ngovlyly Sok Sovannary Tuot Li Yang Hsu Siyan Yi Saw Swee Hock School of Public Health National University of SingaporeNational University Health SystemSingaporeSingapore 不详

Background:Cambodia is among the 30 countries in the world with the highest burden of tuberculosis(TB),and it is estimated that 40%of people with TB remain *** this study,we aimed to investigate the determinants of delayed diagnosis and treatment of TB in ***:This mixed-method explanatory sequential study was conducted between February and September 2019 in 12 operational districts in *** comprised of a retrospective cohort study of 721 people with TB,followed by a series of in-depth *** assessed factors associated with time to TB diagnosis and treatment initiation using Cox proportional hazards ***,we conducted in-depth interviews with 31 people with TB purposively selected based on the time taken to reach TB diagnosis,sex,and *** were coded,and thematic analyses were ***:The median time from the onset of symptoms to TB diagnosis was 49 days(Interquartile range[IQR]:21–112).We found that longer time to diagnosis was significantly associated with living in rural area(Adjusted hazards ratio[aHR]=1.25;95%confidence interval[CI]:1.06–1.48);TB symptoms-cough(aHR:1.52;95%CI:1.18–1.94),hemoptysis(aHR 1.32;95%CI:1.07–1.63),and night sweats(aHR:1.24;95%CI:1.05–1.46);seeking private health care/self-medication(aHR:1.23;95%CI:1.04–1.45);and higher self-stigma(aHR:1.02;95%CI:1.01–1.03).Participants who received education level above the primary level were inversely associated with longer time to diagnosis(aHR:0.78;95%CI:0.62–0.97).The median time from TB diagnosis to the initiation of treatment was two days(IQR:1–3).The use of smear microscopy for TB diagnosis(aHR:1.50;95%CI:1.16–1.95)was associated with longer time to treatment *** private health care and self-medication before TB diagnosis,lack of perceived risk,threat,susceptibility,and stigma derived qualitatively further explained the quantitative ***:TB diagnostic delay was *** publi

关键词： Tuberculosis Delayed diagnosis Health-seeking behavior Cambodia

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基于FDM和teo的滚动轴承故障诊断研究

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机电工程 2021年第7期38卷 850-856页

作者：张辉张超辛阔田帅内蒙古科技大学机械工程学院内蒙古包头014010 内蒙古自治区机电系统智能诊断与控制重点实验室内蒙古包头014010

针对傅里叶分解方法(FDM)在强噪声的环境下难以准确地提取故障特征的问题,利用FDM具有正交性、完备性及局部性的特点,及Teager能量算子(teo)能突显信号中脉冲特征的优势,提出了一种基于FDM和teo的滚动轴承故障诊断方法。首先,使用FDM按... 详细信息

针对傅里叶分解方法(FDM)在强噪声的环境下难以准确地提取故障特征的问题,利用FDM具有正交性、完备性及局部性的特点,及Teager能量算子(teo)能突显信号中脉冲特征的优势,提出了一种基于FDM和teo的滚动轴承故障诊断方法。首先,使用FDM按照高频到低频的搜寻方式,搜寻到了傅里叶固有模态分量信号;然后,利用峭度准则和相关系数筛选出了最优的模态信号,并对信号进行了重构;接下来对重构信号使用teo进行处理,增强了信号中的脉冲特征;最后,在频谱图中提取了其故障特征,利用该方法对模拟信号和滚动轴承振动信号进行了分析,并且采用辛辛那提大学提供的轴承数据对其进行了实验验证。研究结果表明:所提方法明显优于FDM方法,在78 Hz和236 Hz处能够精确地凸显滚动轴承的故障特征频率,实现对滚动轴承故障的准确诊断。

关键词：傅里叶分解方法 Teager能量算子峭度准则相关系数滚动轴承

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