北京城乡医患信任水平比较研究

目的 从医患双方的视角比较北京城乡医患信任水平。方法 对北京市农村H区3个乡镇12个村和城市3家医院的医生和患者进行实地观察。结果 医患双方对城乡医患信任水平评价均值均高于3.6分。经统计学检验,城乡患者对城乡医患信任水平评价存在显著差异（F=5.050,P=0.008）,城市医院医患双方对医患信任水平评价存在显著差异（t=3.16,P=0.002）。结论 影响患者对城乡医患信任水平评价的因素主要有城乡医疗机构的服务功能、服务水平、设备设施、服务态度等。     

医患纠纷的处理意愿调查与分析

医患纠纷是医患矛盾的一种表现形式。近年来,全国各地因医患纠纷而引起的冲突越来越多,医患双方都从自己的角度出发,希望实现利益的最大化。现行的医患纠纷处理方案主要有民事诉讼、医患协商解决和行政处理3种。通过调查医患双方的处理意愿,分析这三种处理方案存在的积极意义和局限性,提出医院在引入医疗社会工作的基础上,通过开展社会、心理服务,加强医患沟通等途径,建立新的医患纠纷调解机制的设想。     

非医疗技术因素对门诊患者满意度的调查与分析

?????? 目的 了解门诊患者对于非医疗技术服务的满意度现状,探讨影响门诊患者满意度的非技术因素。方法 对广州市某三甲医院2012年3—6月就诊的208名门诊患者进行问卷调查。结果 与“等候时间”、“诊疗费用”相关的满意度水平显著低于“服务态度”、“环境设施”类,且满意度水平存在着社会人口学差异。结论 医院应注重非医疗技术服务的改进,可从营造舒适就诊环境、加强医患沟通、降低医疗费用及合理门诊布局等方面入手。同时,优化门诊预约服务可有效提高门诊患者满意度。     

宁夏县级医院耳鼻咽喉科医疗服务能力分析

目的 通过对宁夏县级医院耳鼻咽喉科医疗服务现状的调查,了解其发展瓶颈与不足,提出提升宁夏县级医院耳鼻咽喉科医疗服务能力的建议。方法 采用整群抽样方法,对宁夏县级公立综合医院耳鼻咽喉科进行问卷调查,并抽样访谈部分医院耳鼻咽喉科主任,回收、整理、分析相关数据,定量定性分析调查医院耳鼻咽喉科医疗服务能力。结果 宁夏县级医院耳鼻咽喉科各项现状指标均低于县医院标准要求,科室人员与设备数量严重不足,可开展医疗技术项目少,门诊、出院人数逐年提高。结论 宁夏县级医院耳鼻咽喉科医疗服务能力不足,建议科室制定发展规划,创新发展方式;开发人力资源,提升技术水平;借助信息平台,共建学科联盟。     

转诊患者对分级医疗服务体系构建的认知行为分析

目的 探讨转诊患者对上下级医疗机构医疗服务、转诊服务的认知行为及其影响因素,以期明确“患者角度”医疗服务体系存在的问题,并提出构建与优化分级医疗服务体系的建议。方法 分别在东、中、西地区选择有转诊经验的患者为样本,收集其基本情况、健康状况、就诊行为、对双向转诊的认知、满意度情况及其评价等信息,运用卡方检验、秩和检验和ordinal logistic进行分析。结果 82.7%的患者赞成疾病首诊应在基层医疗机构,但缺乏对基层医疗机构的信任。在患者看来,提高基层医务人员水平和医疗费用报销比例是影响其择医的主要因素。患者对医疗机构间转诊制度满意程度受地区、患者年龄、就医方便程度、转诊过程的方便程度等因素影响。结论 患者对于分级医疗的认识存在误区,且对基层医疗机构明显缺乏信任感。应从改善基层医疗机构服务能力、加强信息引导和健康教育、梯度化医疗保险制度等方面优化分级医疗体系建设。     

临床路径实施中医务人员满意度调查及影响因素分析

目的 分析临床医务人员对临床路径实施的接受程度以及行为影响因素,为临床路径的持续有效开展提供参考依据。 方法 通过查阅文献对临床医务人员的路径依从做定性讨论,结合问卷调查对临床路径实施的实用性、工作模式改变以及效果进行满意度测评。结果 医务人员对于临床路径的接受程度尚可,且不同年龄、职称间其对工作模式的影响存在显著性差异。结论 临床路径的实施加大了医务人员的工作量,有必要建立相对完善的激励约束机制,并依托灵活的信息化手段,促进多学科协作,保障临床路径的顺畅实施。     

基于德尔菲法的外科手术风险因素评价指标构建

目的 构建外科手术风险因素评价指标体系,为有效监管外科手术质量与安全提供参考依据。方法 运用文献分析法、德尔菲法、层次分析法进行外科手术风险因素评价体系的构建和指标权重的确定。结果 建立了一个由手术固有风险、医疗机构风险、医务人员风险、患者风险4 个一级指标和手术本身风险、医务人员专业技术水平、患者个体差异、医务人员责任心、医学科学的局限性、医院诊疗流程、医务人员团队协作,医院诊疗服务水平、工作负荷等等20 个二级指标组成的手术风险因素评价指标体系。结论 建立一套完善的外科手术风险因素评价指标体系,对于保障手术患者安全、有效进行外科手术质量与安全监管具有重要意义。     

我院康复医疗服务体系建设的做法与体会

哈尔滨医科大学附属第一医院积极探索新的服务体系,充分整合和利用黑龙江省康复资源和医疗卫生资源,在康复医疗服务体系建设、康复机构功能定位、双向转诊制度、康复人才培养等方面进行了积极的探索,康复医疗服务网络化管理模式初具雏形。     

医疗纠纷案例处理方式的Meta分析

目的 综合分析协商、调解、诉讼等医疗纠纷处理方式的使用情况,以期为完善医疗纠纷处理机制提供参考。方法 搜索近年研究医疗纠纷的相关文献,运用Meta分析方法对医疗纠纷案例研究中的数据进行统计和处理,分析各种医疗纠纷处理方式的使用分布情况。结果 在引入医疗纠纷人民调解之前,文献研究中各种处理方式所占比例分别为：双方协商解决65%、卫生行政调解23%、诉讼19%。而在引入医疗纠纷人民调解之后,文献研究中各种处理方式所占比例分别为双方协商解决75%、医疗纠纷人民调解17%、卫生行政调解1%、诉讼6%。结论 医患双方协商解决仍为目前医疗纠纷的主要处理方式,随着医疗纠纷人民调解的逐步发展,多元化的医疗纠纷处理机制将日趋完善。     

应急小分队现场医学救援能力现状及其影响因素分析

??????? 目的 了解黑龙江省医疗机构应急小分队人员的突发事件现场医学救援能力现状,对影响救援能力的因素进行诊断,为提高突发事件现场医学救援能力建设提供参考依据。方法 采用分层整群抽样的方法,选取47个医疗机构,对807名医疗机构应急小分队人员进行问卷调查,并辅以定性访谈。结果 通过多因素Logistic回归分析,筛出影响医疗机构应急小分队现场医学救援能力的因素大小依次是实战经验、个人防护能力、培训、装备、医院级别和工作年限,且均呈正相关关系。结论 为提高医疗机构应急小分队现场救援能力,应进一步加强实战经验,提高个人防护能力,重视培训内容、方式与效果,合理储备利用装备等。     

壳聚糖酶的克隆表达与壳寡糖的制备分析

目的:克隆壳聚糖酶基因于大肠杆菌中实现高表达,制备壳寡糖。方法:以枯草芽孢杆菌总DNA为模板扩增壳聚糖酶基因(CSN),克隆至载体pET23a(+)上,转化菌株BL21(DE3)。重组子经0.5 mmol/L IPTG诱导后,SDS-PAGE和质谱检测与鉴定重组酶。酶纯化后水解壳聚糖,薄层色谱分析其水解产物。结果:质谱证明壳聚糖酶(31.5kDa)成功表达,表达量占菌体总蛋白的45%左右。纯化后重组酶浓度为900 mg/L,纯度95%、回收率85%,酶活力为10 000 U/mg。壳聚糖降解产物为壳二糖至壳四糖。结论:原核表达载体pET23a(+)-CSN构建正确,壳聚糖酶表达量与活性高,适用于水解壳聚糖制备壳寡糖。     

国内外蝗害治理技术现状与展望

本文首先概述了国内外蝗虫发生与为害的态势,总结了现阶段我国蝗虫发生与为害的主要特点:即农田飞蝗暴发频繁而且严重,草原土蝗的发生时常造成严重的经济损失,而且侵入城市干扰市民生活,我国与周边国家之间蝗虫过境迁移频繁,使用化学农药污染环境和农产品;分析了国内外蝗虫防治对策与技术的发展现状,重点介绍了应急防治和可持续治理对策、...     

Coiled-coil nanomechanics and uncoiling and unfolding of the superhelix and alpha-helices of myosin

The nanomechanical properties of the coiled-coils of myosin are fundamentally important in understanding muscle assembly and contraction. Force spectra of single molecules of double-headed myosin, single-headed myosin, and coiled-coil tail fragments were acquired with an atomic force microscope and displayed characteristic triphasic force-distance responses to stretch: a rise phase (R) and a plateau phase (P) and an exponential phase (E). The R and P phases arise mainly from the stretching of the coiled-coils, with the hinge region being the main contributor to the rise phase at low force. Only the E phase was analyzable by the worm-like chain model of polymer elasticity. Restrained molecular mechanics simulations on an existing x-ray structure of scallop S2 yielded force spectra with either two or three phases, depending on the mode of stretch. It revealed that coiled-coil chains separate completely near the end of the P phase and the stretching of the unfolded chains gives rise to the E phase. Extensive conformational searching yielded a P phase force near 40 pN that agreed well with the experimental value. We suggest that the flexible and elastic S2 region, particularly the hinge region, may undergo force-induced unfolding and extend reversibly during actomyosin powerstroke.     

放牧对牧草光合作用、呼吸作用和氮、碳吸收与转运的影响

研究放牧对草地植物生理活动的影响,对于揭示草地放牧演替的生理机制有重要意义.大量研究表明,家畜放牧对牧草光合作用、呼吸作用以及C和N吸收与转运的影响,可以分为生理伤害和生理恢复2个阶段.放牧通过改变草地冠层结构影响牧草光合作用,净光合作用速率短期内迅速下降,随着叶面积指数增加又逐渐上升,呼吸作用有相似的变化趋势.牧草放牧后再生长所需的C和N最初主要来自根系和留茬中的贮藏物质,此后随着牧草生长恢复逐渐由同化作用供给,C代谢与土壤N水平负相关.放牧后牧草生理活动变化与牧草遗传特性、种间竞争、家畜放牧特征、非生物环境等因素密切相关.     

Kinetics and thermodynamics of peroxidase- and laccase-catalyzed oxidation of N-substituted phenothiazines and phenoxazines

N -substituted phenothiazines (PTs) and phenoxazines (POs) catalyzed by fungal Coprinus cinereus peroxidase and Polyporus pinsitus laccase were investigated at pH 4–10. In the case of peroxidase, an apparent bimolecular rate constant (expressed as k _cat/K _m) varied from 1 ×10⁷M⁻¹s⁻¹to 2.6×10⁸M⁻¹s⁻¹ at pH 7.0. The constants for PO oxidation were higher in comparison to PT. pH dependence revealed two or three ionizable groups with pK _a values of 4.9–5.7 and 7.7–9.7 that significantly affected the activity of peroxidase. Single-turnover experiments showed that the limiting step of PT oxidation was reduction of compound II and second-order rate constants were obtained which were consistent with the constants at steady-state conditions. Laccase-catalyzed PT and PO oxidation rates were lower; apparent bimolecular rate constants varied from 1.8×10⁵M⁻¹s⁻¹ to 2.0×10⁷M⁻¹s⁻¹ at pH 5.3. PO constants were higher in comparison to PT, as was the case with peroxidase. The dependence of the apparent bimolecular constants of compound II or copper type 1 reduction, in the case of peroxidase or laccase, respectively, was analyzed in the framework of the Marcus outer-sphere electron-transfer theory. Peroxidase-catalyzed reactions with PT, as well as PO, fitted the same hyperbolic dependence with a maximal oxidation rate of 1.6×10⁸M⁻¹s⁻¹ and a reorganization energy of 0.30 eV. The respective parameters for laccase were 5.0×10⁷M⁻¹s⁻¹ and 0.29 eV. Received: 20 September 1999 / Accepted: 24 February 2000     

Synthesis of hapten and conjugates of coumestrol and development of immunoassay

3-O-Carboxymethylcoumestrol was prepared as the hapten for immunoassay by a partial alkylation of coumestrol with ethyl chloroacetate in acetone alkalized with potassium carbonate. 3-O-Ethoxycarbonylmethylcoumestrol was separated by column chromatography and finally was hydrolyzed with formic acid. 1H and 13C NMR data (APT, COSY, HMQC, and HMBC) revealed that the reaction was regioselective, as 3-O-ethoxycarboxymethylcoumestrol was the only monosubstituted derivative. The hapten was then conjugated to bovine serum albumin and used for immunization of rabbits. A radioimmunoassay (RIA) system was established based on the polyclonal antiserum and a 125I-labeled hapten-tyrosine methyl ester conjugate as the radioligand. Parameters of the RIA: sensitivity: 12 pg per tube, 50% intercept: 140 pg per tube, working range: 20-4000 pg per tube. The cross-reactivity of a panel isoflavonoid and lignan phytoestrogens was either negligible (e.g. formononetin 0.07%; biochanin A 0.06%) or not detectable at all. The major immunoreactive peak in HPLC fractions from an alfalfa extract had the same retention time as coumestrol standard and represented 94.8% of the signal. The remaining 5.2% of immunoreactivity was distributed between five minor peaks. We conclude that after the validation for particular matrices, the method will be a useful tool for analysis of coumestrol, especially in low volume and low concentration samples.     

白术同源四倍体的诱导和鉴定及其与二倍体过氧化物酶的比较

以白术（Atractylodes macrooephala Koidz.）二倍体组培苗为材料,对其四倍体诱导方法进行研究,共获得45个白术同源四倍体株系,为优良株系的选育提供了材料。此外,还分析比较了其中8个白术四倍体株系与二倍体的过氧化物酶同工酶（POD）的酶谱差异,发现四倍体各株系过氧化物酶同工酶谱比二倍体的均多了Rf0.310的谱带,且总过氧化物酶比活力也发生了很大改变,对探讨白术四倍体优良株系的生理生化机理具有一定的参考价值。     

Morphology and putative function of the colon and cloaca of marine and freshwater snakes

Among tetrapods, evidence for postrenal modification of the urine by the distal digestive tract (including the colon and cloaca) is highly variable. Birds and bladderless reptiles are of interest because the colon and cloaca represent the only sites from which water and ions can be reclaimed from the urine secreted by the kidney. For animals occupying desiccating environments (e.g., deserts and marine environments), postrenal modification of the urine may directly contribute to the maintenance of hypo‐osmotic body fluids. We compared the morphology and distribution of key proteins in the colon, cloaca, and urogenital ducts of watersnakes from marine (Nerodia clarkii clarkii) and freshwater (Nerodia fasciata) habitats. Specifically, we examined the epithelia of each tissue for evidence of mucus production by examining the distribution of mucopolysaccharides, and for evidence of water/ion regulation by examining the distribution of Na⁺/K⁺‐ATPase (NKA), Na⁺/K⁺/Cl^? cotransporter (NKCC), and aquaporin 3 (AQP3). NKCC localized to the basolateral epithelium of the colon, urodeal sphincter, and proctodeum, consistent with a role in secretion of Na⁺, Cl^?, and K⁺ from the tissue, but NKA was not detected in the colon or any compartment of the cloaca. Interestingly, NKA was detected in the basolateral epithelium of the ureters, suggesting the urothelium may play a role in active ion transport. AQP3 was detected in the ureters and coprodeal complex, consistent with a role in urinary and fecal dehydration or, potentially, in the production of the watery component of the mucus secreted by the coprodeal complex. Since no differences in general cloacal morphology, production of mucus, or the distribution of ion transporters/water channels were detected between the two species, cloacal osmoregulation may either be regulated by proteins not examined in this study or may not be responsible for the differential success of N. c. clarkii and N. fasciata in marine habitats. J. Morphol. 2011. © 2011 Wiley Periodicals, Inc.