基于理论域框架的ICU护士执行身体约束缩减行动障碍因素的质性研究

目的：探讨ICU护士执行身体约束缩减行动的障碍因素，为制定身体约束标准化管理方案提供依据。方法：基于理论域框架（TDF）制定访谈提纲，采用目的抽样法对天津市某三级甲等医院的12名ICU护士进行半结构式访谈，按照TDF的相关领域对转录后的资料进行归类，用内容分析法对访谈资料进行分析。结果：ICU护士对身体约束缩减行动理解存在偏差、对约束替代措施内容的不熟悉是其执行身体约束缩减行动的障碍因素之一；身体约束缩减方案评估工具、决策流程的不规范对缩减约束行动的开展造成了一定阻碍；环境因素的限制及对缩减约束结果的担忧，使ICU护士没有足够的信心去执行；科室缺乏支持缩减约束的组织氛围，难以引起护士对执行约束缩减行动的重视，进而削减执行的动力。结合理论域框架将上述因素分别归属为知识、自我效能、环境背景和资源、社会影响、行为规范5个领域。结论：知识、自我效能、环境背景和资源、社会影响及行为规范为ICU护士执行身体约束缩减行动的障碍因素。科室要在明确障碍因素的基础上，加强领导层对执行缩减约束的重视和支持。制定缩减约束评估决策规范化流程以及培训方案，倡导团队协作，创造支持身体约束缩减行动的组织氛围，坚定ICU护士执行缩减约束的信心，促进身体约束缩减行动的持续实施。     

智力和发展性残疾儿童青少年身体活动效益：基于ICF的系统综述

目的 基于《国际功能、残疾和健康分类》(ICF)构建智力和发展性残疾儿童青少年身体活动效益系统综述的范畴和PICO架构，探讨智力和发展性残疾儿童和青少年参加身体活动的健康效益。     

Sports injury prevention programmes from the sports physical therapist's perspective: An international expert Delphi approach

ObjectiveTo provide consensus on how to plan, organize and implement exercise-based injury prevention program (IPP) in sports.DesignDelphi.SettingLimeSurvey platform.ParticipantsExperienced sports physical therapists from the International Federation of Sports Physical Therapy member countries.Main outcome measuresFactors related to sports IPP planning, organization and implementation.ResultsWe included 305 participants from 32 countries. IPP planning should be based on an athlete's injury history, on pre-season screening results, and on injury rates (respectively, 98%, 92%, 89% agreement). In total 97% participants agreed that IPP organization should depend on the athlete's age, 93% on the competition level, and 93% on the availability of low-cost materials. It was agreed that IPP should mainly be implemented in warm-up sessions delivered by the head or strength/conditioning coach, with physical training sessions and individual physical therapy sessions (respectively, 94%, 92%, 90% agreement).ConclusionStrong consensus was reached on (1) IPP based on the athlete's injury history, pre-season screening and evidence-based sports-specific injury rates; (2) IPP organization based on the athlete's age, competition level, and the availability of low-cost materials and (3) IPP implementation focussing on warm-up sessions implemented by the strength/conditioning coach, and/or individual prevention sessions by the physical therapist.     

Shikonin from Chinese herbal medicine induces GSDME-controlled pyroptosis in tumor cells

ObjectiveTo investigate the potential anti-tumor mechanisms of naphthoquinone compound shikonin (SKN) extracted from the root of Chinese herbal medicine plant lithospermum (Lithospermum erythrorhizon Sieb. & Zucc.).MethodsWe first observed that SKN treatment led to swelling and bubbles in HeLa cells that were similar to the phenotype of cell pyroptosis. Subsequently, the HeLa cells experienced a pyroptotic process with SKN, and this was then assessed using lactate dehydrogenase (LDH) release and propidium iodide (PI)/Hoechst double staining experiments. Pyroptosis is defined as gasdermin-mediated programmed necroptosis. To identify the potential pyroptosis machinery, two strategies were utilized that included a genome-wide clustered regularly interspaced short palindromic repeats (CRISPR)-associated protein 9 screening experiment and a pyroptosis reconstitution assay executed by each of the five known gasdermins (GSDMA-E). Moreover, endogenous cleavage was also detected in a panel of tumor cell lines.ResultsCompared with the control, both the LDH release and PI/Hoechst double-staining experiments suggested that SKN induced perforation and enhancement of the permeability of the cell membranes that resulted in pyroptosis in HeLa cells (P = .028 and P = .032, respectively). In addition, the reconstitution assays in human embryonic kidney 293T (HEK-293T) cells and endogenous cleavage assays in HeLa cells indicated that the pyroptosis was controlled by GSDME. In addition, we also found SKN could trigger pyroptosis in a panel of tumor cell lines in which the cellular morphologies were proportional to the GSDME expression levels. Additionally, the cleavage of GSDME was also detected, and this was indicative of a similar GSDME-mediated mechanism.ConclusionOur study not only explained the molecular mechanism of cytotoxicity of SKN to various tumor cells, but also provided additional information for the potential clinical application of natural naphthoquinone compounds against cancer.     

Effect of chlorhexidine digluconate on antimicrobial activity,cell viability and physicochemical properties of three endodontic sealers

ObjectiveAssess the biological and physicochemical properties of AH Plus, BioRoot RCS and Pulp Canal Sealer (PCS) leachates with and without chlorhexidine (CHX).MethodsThe sealers were studied in no contact and 1-minute contact with CHX. For biological properties (antibacterial activity and cytotoxicity), leachates were formed in saline of freshly mixed, 1-, 7- and 28 days set sealers. The antibacterial properties of sealer leachates were investigated for planktonic and biofilm growth of E. faecalis, S. mutans, S.epidermidis and S.aureus. The 3-(4,5 dimethylthiazolyl-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay was used to evaluate murine fibroblast cell viability after exposure to the leachates. The physical properties (water uptake, sorption, solubility, porosity, surface characteristics) of sealers and the pH of the immersion liquid (saline or distilled water) were also assessed over a 28-days period.ResultsCHX improved the antibacterial properties of the sealer leachates and reduced cell viability for all sealer leachates, except for freshly mixed PCS. BioRoot RCS leachates presented the highest antibacterial properties and cell viability with and without CHX contact. PCS was the material most affected by CHX in terms of physical properties, whereas for AH Plus, solubility was increased. CHX did not affect the physical properties of BioRoot RCS, except for solubility that was decreased. CHX contact did not change sealers’ alkalinity in distilled water whereas it increased it for AH Plus and BioRoot RCS in saline.SignificanceCHX improved the antibacterial efficacy of sealer leachates and either compromised or did not affect cell viability. CHX affected to various extent sealers’ physicochemical properties.     

骨科围手术期患者静脉血栓栓塞症物理预防的最佳证据总结

目的总结骨科围手术期患者静脉血栓栓塞症（VTE）物理预防的证据，提高护理人员VTE物理预防措施实施依从性。方法根据澳大利亚JBI循证卫生保健中心证据总结方法学，检索骨科围手术期患者VTE物理预防相关文献，根据纳入文献类型，由研究人员独立进行质量评价，并提取、汇总最佳证据。结果共纳入文献17篇，包含10篇指南、1篇证据总结、2篇专家共识、4篇系统评价。经过分析，总结出7类共30条骨科围手术期患者VTE物理预防最佳证据。结论最佳证据可为护士提供循证依据。但在应用时，还需评估具体临床情境，结合专业判断和患者意愿，针对性选择证据，以促进护理质量的持续改进。     

Delineating the geographic context of physical activities: A systematic search and scoping review of the methodological approaches used in social ecological research over two decades

BackgroundThe social ecological approach suggests that the spatial context among other factors influence physical activity behavior. Ample research documents physical environmental effects on physical activity. Yet, to date inconsistent associations remain, which might be explained by conceptual and methodological challenges in measuring the spatial dimensions of health behavior. We review methods applied to measure the spatial contexts in the social ecological physical activity literature.MethodsOnline databases and selected reviews were used to identify papers published between 1990 and 2020. A total of 2167 records were retrieved, from which 412 studies that used physical activity as a primary outcome variable, included measures of the physical environment and applied the main principles of the social ecological approach, were included.ResultsSubjective approaches were the dominant method to capture the spatial context of physical activities. These approaches were applied in 67% (n=279) of the studies. From the objective approaches an administrative unit was most prevalent and was applied in 29% (n=118) of the studies. The most comprehensive objective spatial methods that capture the true environmental exposure, were used only in 2% (n=10) of the studies.ConclusionsCurrent social ecological physical activity research applies simple conceptualizations and methods of the spatial context. While conceptual and methodological concerns have been repeatedly expressed, no substantive progress has been made in the use of spatial approaches. To further our understanding on place effects on health, future studies should carefully consider the choice of spatial approaches, and their effect on study results.