Lean Six Sigma

精益六西格玛
  • 文章类型: Journal Article
    具有过度复杂性的放射治疗计划表现出更高的不确定性和更差的患者特定质量保证(PSQA)结果,而基于测量的PSQA的工作量会影响放射治疗工作流程的效率。机器学习(ML)和精益六西格玛,一种工艺优化方法,被实施为采用有针对性的PSQA方法,旨在减少工作量,失败的风险,监控复杂性。
    使用DMAIC应用精益六西格玛(定义,measure,分析,改进,和控制)步骤。从我们研究所交付的28,612个计划(2013-2021年)中,为69,811个体积调制电弧治疗(VMAT)弧计算了10个复杂性指标。异常值复杂性被定义为>历史分布的第95百分位数,按治疗分层。考虑到电弧的复杂性,对ML模型进行了训练,以预测电弧的伽马通过率(GPR-3%/1mm)。开发了决策支持系统来监视复杂性和预期的GPR。计划面临PSQA失败的风险,要么极其复杂,要么平均探地雷达<90%,已确定。在临床使用9个月后评估该工具的影响。
    在预期监测的1722个VMAT计划中,29人(1.7%)被发现有失败的风险。规划人员通过执行PSQA测量和重新优化计划来做出反应。异常复杂性的发生保持在5%以内。由于计划重新优化,预期的GPR从97.4%的中位数增加到98.2%(Mann-Whitneyp<0.05)。
    ML和精益六西格玛已在临床实践中实施,从而为面临失败风险的计划提供针对性的基于测量的PSQA方法,以提高整体质量和患者安全性。
    UNASSIGNED: Radiotherapy plans with excessive complexity exhibit higher uncertainties and worse patient-specific quality assurance (PSQA) results, while the workload of measurement-based PSQA can impact the efficiency of the radiotherapy workflow. Machine Learning (ML) and Lean Six Sigma, a process optimization method, were implemented to adopt a targeted PSQA approach, aiming to reduce workload, risk of failures, and monitor complexity.
    UNASSIGNED: Lean Six Sigma was applied using DMAIC (define, measure, analyze, improve, and control) steps. Ten complexity metrics were computed for 69,811 volumetric modulated arc therapy (VMAT) arcs from 28,612 plans delivered in our Institute (2013-2021). Outlier complexities were defined as >95th-percentile of the historical distributions, stratified by treatment. An ML model was trained to predict the gamma passing rate (GPR-3 %/1mm) of an arc given its complexity. A decision support system was developed to monitor the complexity and expected GPR. Plans at risk of PSQA failure, either extremely complex or with average GPR <90 %, were identified. The tool\'s impact was assessed after nine months of clinical use.
    UNASSIGNED: Among 1722 VMAT plans monitored prospectively, 29 (1.7 %) were found at risk of failure. Planners reacted by performing PSQA measurement and re-optimizing the plan. Occurrences of outlier complexities remained stable within 5 %. The expected GPR increased from a median of 97.4 % to 98.2 % (Mann-Whitney p < 0.05) due to plan re-optimization.
    UNASSIGNED: ML and Lean Six Sigma have been implemented in clinical practice enabling a targeted measurement-based PSQA approach for plans at risk of failure to improve overall quality and patient safety.
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  • 文章类型: Journal Article
    在台湾的国民健康保险(NHI)制度下,对于所有医疗保健提供者来说,向国家健康保险管理局(NHIA)准确提交医疗费用索赔是至关重要的,以避免不正确的扣除。随着医疗政策的变化和医院管理策略的调整,索赔规则的复杂性导致医院在医疗费用索赔程序上花费大量人力和时间。因此,本研究利用精益六西格玛DMAIC(定义,Measure,分析,改善,控制)的管理方法,以识别过程中的浪费和非增值步骤。同时,它引入了机器人过程自动化(RPA)工具来取代手工操作。实施后,该研究有效地减少了380分钟的过程时间和提高过程循环效率(PCE)从69.07到95.54%。这项研究验证了医疗机构精益数字化转型的真实案例。它使人力资源能够分配给更有价值和创造性的任务,同时协助医院提供更全面和以患者为中心的服务。
    Under Taiwan\'s National Health Insurance (NHI) system, it\'s crucial for all healthcare providers to accurately submit medical expense claims to the National Health Insurance Administration (NHIA) to avoid incorrect deductions. With changes in healthcare policies and adjustments in hospital management strategies, the complexity of claiming rules has resulted in hospitals expending significant manpower and time on the medical expense claims process. Therefore, this study utilizes the Lean Six Sigma DMAIC (Define, Measure, Analyze, Improve, Control) management approach to identify wasteful and non-value-added steps in the process. Simultaneously, it introduces Robotic Process Automation (RPA) tools to replace manual operations. After implementation, the study effectively reduces the process time by 380 min and enhances Process Cycle Efficiency (PCE) from 69.07 to 95.54%. This research validates a real-world case of Lean digital transformation in healthcare institutions. It enables human resources to be allocated to more valuable and creative tasks while assisting hospitals in providing more comprehensive and patient-centric services.
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  • 文章类型: Journal Article
    六西格玛基金会是一种统计标准,表明质量非常高,以及旨在降低错误率并提高流程效率的客户满意度管理方法。定义,Measure,分析,改善,和控制(DMAIC)方法是六西格玛的基本组成部分,并为流程改进提供了有组织的框架。与更基于手动的传统技术相比,六西格玛强调并专注于根据事实和证据做出决策。六西格玛成功的关键是它对统计方法的依赖。帕累托图表等高级工具,直方图,回归分析,和鱼骨图被广泛用于客户的利益和降低整体错误率。为了支持临床决策,临床实验室的主要职责是产生准确的检测结果,可重复,快,并适当解释。确保预期的临床结果必须是最终目标。为了实现这个目标,实验室必须优先考虑成本效益,同时建立和保持所有实验室程序的质量。精益六西格玛(LSS)方法的概念,主要通过辨别和消除对组织没有任何好处的行动或行动来提高效率,与六西格玛的命题相结合,强调数据驱动的分析和优化。这些强大概念的集成有助于采用这些技术的组织的整体改进。这篇综述简要概述了LSS方法的益处及其在口腔病理学实验室中的实施。
    Six Sigma Foundations is a statistical standard that indicates an exceptionally high level of quality, along with a customer satisfaction management approach that intends to lower error rates and boost process efficiency. The Define, Measure, Analyse, Improve, and Control (DMAIC) approach is a fundamental component of Six Sigma and provides an organised framework for process improvement. In contrast to conventional techniques that are more manual-based, Six Sigma emphasises and focuses on making decisions based on facts and evidence. The key to the success of Six Sigma is its reliance on statistical methods. Advanced tools like Pareto charts, histograms, regression analysis, and fishbone diagrams are used ardently for the benefit of customers and to reduce the overall error rate. To support clinical decision-making, a clinical laboratory\'s primary responsibility is to generate test results that are accurate, repeatable, fast, and appropriately interpreted. Ensuring desired clinical outcomes must be the ultimate objective. To accomplish this goal, laboratories must prioritise cost-effectiveness while establishing and maintaining quality in all laboratory procedures. The concept of the Lean Six Sigma (LSS) methodology, which mainly centres on efficiency by discerning and eradicating actions or operations that do not provide any benefit to the organisation, is combined with the proposition of Six Sigma, which emphasises data-driven analyses and optimization. The integration of these powerful concepts aids in the overall improvement of the organisations adopting these techniques. This review provides a brief overview of the benefits of the LSS methodology and its implementation in the oral pathology laboratory.
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  • 文章类型: Journal Article
    本研究调查了活性药物成分(API)工厂内全面生产维护(TPM)和以可靠性为中心的维护(RCM)策略的要求,关系和实施。本研究旨在研究TPM和可靠性工程的工具和技术,然后将设计模型部署到API工厂。涉及定义精益六西格玛阶段设计的案例研究,Measure,分析,设计,并验证用于构建API站点TPM试点计划。数据是通过采访X公司的本地和全球工程团队收集的。进程运行时,编制了停机时间和工厂可用性指标,并提出并验证了全面生产维护和可靠性的新设计。设计了一个维护框架,以最佳方式纳入全面生产维护,可靠性和运营卓越,重点是整体设备效率(OEE),实现计划维护活动减少33%,纠正维护减少70%,维护清洁减少了50%,离心机的试点维护区域的OEE增加了20%,工厂可用性增加了200和6小时。这项研究强调了全面生产维护作为有效维护策略的关键组成部分及其改变维护实践的潜力的重要性。基于此研究和结果,建议将TPM应用于任何API制造组织。该研究的局限性在于它是单站点案例研究。这项研究的新颖性基于对可靠性工程的重视,以从制造计划中删除非增值维护时间。本研究中设计和实施的全面生产维护和可靠性模型在文献中是独一无二的,工程专业人员和学者可以利用它来了解TPM的好处。
    This research investigates the requirement for and relationship and implementation of a total productive maintenance (TPM) and Reliability Centred Maintenance (RCM) strategy within an Active Pharmaceutical Ingredient (API) Plant. This research aimed to study the tools and techniques of TPM and Reliability Engineering and then deploy a designed model to an API plant. A case study involving Design for Lean Six Sigma phases of Define, Measure, Analyse, Design, and Verify was utilised to build an API site TPM pilot program. Data was collected using interviews across Company \'X\'s local and Global Engineering teams. Process runtime, downtime and plant availability metrics were compiled and a new design for Total Productive Maintenance and Reliability was proposed and verified. A maintenance framework was designed to optimally incorporate Total Productive Maintenance, Reliability and Operational Excellence with an emphasis on Overall Equipment Efficiency (OEE) realizing a 33 % reduction in planned maintenance activities, a 70 % reduction in Corrective Maintenance, Cleaning for Maintenance was reduced by 50 %, the pilot maintenance area of the centrifuge has its OEE increased by 20 % and plant availability increased by two hundred and 6 h. This research highlights the importance of Total Productive Maintenance as a key component of an effective maintenance strategy and its potential to transform maintenance practices. Based on this research and results, TPM is recommended to be applied to any API manufacturing organization. A limitation of the study is that it is a single-site case study. The novelty of this research is based upon the emphasis on Reliability Engineering to remove non-value add Maintenance time from the manufacturing schedule. The Total Productive Maintenance & Reliability model designed and implemented in this research is unique in the literature and can be leveraged by engineering professionals and academics to understand the benefits of TPM.
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  • 文章类型: Journal Article
    在爱尔兰,门诊骨科等候名单的范围导致患者等待时间长,处理转介的延迟,和顾问案件量的变化。在研究现场,定义,Measure,分析,改善,和控制(DMAIC)精益六西格玛框架被用于评估非增值(NVA)活动的来源,在注册和分诊急诊创伤骨科服务的患者的过程中。采用了前(2021年10月至12月)/后(2022年4月至8月)干预设计,利用Gemba,进程映射,和TIMWODS工具。拥抱以人为本的方法,利益相关者在改进过程的每个阶段都寻求客户反馈意见。在数据收集和分析之后,实施了一项共同设计的试点干预措施(2022年3月),由一个新的分诊模板组成,专门的创伤诊所插槽,顾问分诊名册,以及直接参考物理治疗服务的新选择。这导致患者等待复查的总时间减少了34%,注册所需的流程步骤减少51%,骨科顾问诊所的能力增加了22%。在此过程中,NVA活动的减少和分类顾问管理选择的增加提供了更有效的创伤和骨科途径。
    In Ireland, the extent of outpatient orthopedic waiting lists results in long waiting times for patients, delays in processing referrals, and variation in the consultant caseload. At the study site, the Define, Measure, Analyze, Improve, and Control (DMAIC) Lean Six Sigma framework was applied to evaluate sources of Non-Value-Added (NVA) activity in the process of registering and triaging patients referred to the trauma orthopedic service from the Emergency Department. A pre- (October-December 2021)/post- (April-August 2022) intervention design was employed, utilizing Gemba, Process Mapping, and the TIMWOODS tool. Embracing a person-centered approach, stakeholder Voice of Customer feedback was sought at each stage of the improvement process. Following data collection and analysis, a co-designed pilot intervention (March 2022) was implemented, consisting of a new triage template, dedicated trauma clinic slots, a consultant triage roster, and a new option to refer directly to physiotherapy services. This resulted in the total wait time of patients for review being reduced by 34%, a 51% reduction in the process steps required for registering, and an increase in orthopedic consultant clinic capacity of 22%. The reduction in NVA activities in the process and the increase in management options for triaging consultants have delivered a more efficient trauma and orthopedic pathway.
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  • 文章类型: Journal Article
    目的提高精神科门诊服用抗精神病药物识别和治疗迟发性运动障碍的患者对异常非自愿运动评分(AIMS)文档的依从性。方法采用精益六西格玛质量改进(QI)模型,利用DMAIC定义步骤,measure,分析,改进,control,被跟踪。对精神病患者和居民进行了调查,以评估AIMS非文件记录的原因,他们对他们的首选解决方案进行排名,以提高合规性。获得了服用抗精神病药物的患者的随机样本,以确定在实施改进之前和之后的AIMS文档合规性。结果排名最高的解决方案是实施一小时的AIMS培训课程。干预后三个月,60例患者的随机样本显示,87%(52/60)的患者有AIMS记录,与干预前的3%(1/30)相比有显著增加(p<0.001).结论每年,为居民提供一小时的AIMS培训课程,提高了AIMS文档的比率。
    Objective To increase compliance with Abnormal Involuntary Movement Score (AIMS) documentation for patients taking antipsychotics to recognize and treat tardive dyskinesia in the psychiatry outpatient clinic. Methods The Lean Six Sigma quality improvement (QI) model, utilizing DMAIC steps of define, measure, analyze, improve, control, was followed. Psychiatry attendings and residents were surveyed to assess reasons for AIMS non-documentation, and they ranked their preferred solutions to increase compliance. A random sample of patient charts for individuals on antipsychotic medications was obtained to determine AIMS documentation compliance prior to and following the implementation of improvements. Results The most highly ranked solution was implementing a one-hour AIMS training session. Three months post-intervention, a random sample of 60 patient charts showed that 87% (52/60) of patients had AIMS documented which was a significant increase compared to 3% (1/30) pre-intervention (p<0.001). Conclusion An annual, one-hour AIMS training session for residents improved rates of AIMS documentation.
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  • 文章类型: Journal Article
    由于全球大流行的COVID-19,制造业在很大程度上受到了影响。这场大流行迫使制造业期待一个长期和可持续的商业计划,这确保了三个不同方面的可持续性,即社会,经济,和环境。这要求在较少的资源中对客户前所未有地需要更高的价值。实施集成制造实践的创新方法,即精益六西格玛(LSS)和敏捷制造(AM)是长期业务可持续性的需要,可以通过确保消除浪费和调整需求和需求的动态变化来实现。同时不影响质量。然而,LSS和AM实践与可持续性三大支柱之间的战略联系尚未在文献中描述。在这项研究中,一个由六个结构组成的综合模型,即管理实践(C1),组织文化实践(C2),技术实践(C3),经济方面(C4),开发了社会方面(C5)和环境方面(C6)。本文的目的是通过结构方程建模(SEM)技术仔细检查综合LSS和AM实践与可持续性三个方面之间的关系。.这项研究的结果描述了在综合LSS-AM实践和可持续性支柱之间存在相关性,从而提高了企业的业务竞争力。这是开发具有可持续性方面的集成LSS-AM实践结构模型的主要尝试之一。
    The Manufacturing sector has suffered to a great extent due to global pandemic COVID-19. This pandemic is forcing the manufacturing industries to look forward to a long term and sustainable business plan, which ensures sustainability in three different aspects i.e. Social, Economic, and Environment. This demands a never before need of higher value to the customer in lesser resources. Implementation of innovative approaches of integrated manufacturing practices i.e. Lean Six Sigma (LSS) and Agile Manufacturing (AM) are need of the hour for long-term business sustainability which can be done by ensuring waste elimination and by adjusting the dynamic changes in the demands and requirements simultaneously without compromising in quality. However, the strategic linkage between LSS and AM practices with the three pillars of sustainability has yet not been described in the literature. In this study an integrated model which consists of six constructs i.e. Managerial practices (C1), Organizational culture practices (C2), Technological practices (C3), Economical Aspects (C4), Social Aspects (C5) and Environmental Aspects (C6) was developed. The purpose of the paper is to scrutinize the relationships between the integrated LSS and AM practices and three aspects of sustainability through Structural Equation Modeling (SEM) technique.. The results of this study depict that there is a correlation exists between integrated LSS -AM practices and sustainability pillars that leads to the improvement of firms\' business competitiveness. This is one of the premier attempts to develop integrated LSS-AM practices structural model with the sustainability aspects.
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  • 文章类型: Journal Article
    未经评估:美国糖尿病协会(ADA)建议在所有住院糖尿病患者中测量A1C,如果在前三个月没有进行。我们的目标是确定利用精益六西格玛增加住院患者A1C测量频率的影响。
    UNASSIGNED:我们评估了2016年1月至2021年6月在社区医院连续入院的糖尿病患者,不包括在过去三个月中电子健康记录(EHR)中具有A1C的患者。精益六西格玛用于定义问题的程度并设计解决方案。2017年11月至2018年2月期间交付的干预包包括(1)关于A1C效用的提供者教育,(2)A1C结果的快速周转,和(3)EHR葡萄糖管理选项卡和包括A1C的胰岛素医嘱集。通过批量查询从EHR中提取医院接诊和患者级数据。使用χ2分析比较干预前(2016年1月至2017年11月)和干预后(2018年3月至2021年6月)的A1C测量频率。
    未经评估:干预前与干预后的人口统计没有差异(平均年龄[范围]:70.9[18-104]岁,性别:52.2%男性,种族:57.0%白人)。实施干预措施后,A1C测量值显着增加(61.2%vs74.5%,P<.001)。最初干预后,这一水平持续了两年多。糖尿病咨询服务看到的患者(40.4%vs51.7%,P<0.001)和住院时间(平均:135小时vs149小时,P<0.001)干预后两者均增加。
    UNASSIGNED:我们展示了一种改善住院患者A1C的新方法。精益六西格玛可以代表社区医院改善住院糖尿病护理的一种有价值的方法。
    UNASSIGNED: The American Diabetes Association (ADA) recommends measuring A1c in all inpatients with diabetes if not performed in the prior three months. Our objective was to determine the impact of utilizing Lean Six Sigma to increase the frequency of A1c measurements in hospitalized patients.
    UNASSIGNED: We evaluated inpatients with diabetes mellitus consecutively admitted in a community hospital between January 2016 and June 2021, excluding those who had an A1c in the electronic health record (EHR) in the previous three months. Lean Six Sigma was utilized to define the extent of the problem and devise solutions. The intervention bundle delivered between November 2017 and February 2018 included (1) provider education on the utility of A1c, (2) more rapid turnaround of A1c results, and (3) an EHR glucose-management tab and insulin order set that included A1c. Hospital encounter and patient-level data were extracted from the EHR via bulk query. Frequency of A1c measurement was compared before (January 2016-November 2017) and after the intervention (March 2018-June 2021) using χ2 analysis.
    UNASSIGNED: Demographics did not differ preintervention versus postintervention (mean age [range]: 70.9 [18-104] years, sex: 52.2% male, race: 57.0% white). A1c measurements significantly increased following implementation of the intervention bundle (61.2% vs 74.5%, P < .001). This level was sustained for more than two years following the initial intervention. Patients seen by the diabetes consult service (40.4% vs 51.7%, P < 0.001) and length of stay (mean: 135 hours vs 149 hours, P < 0.001) both increased postintervention.
    UNASSIGNED: We demonstrate a novel approach in improving A1c in hospitalized patients. Lean Six Sigma may represent a valuable methodology for community hospitals to improve inpatient diabetes care.
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  • 文章类型: Journal Article
    优化可用资源、最大限度地降低生产成本和生产时间对于全球汽车行业的一线供应商至关重要。为了开发这种类型的优化和效率,马勒在其位于西班牙的一家工厂中应用了行动研究(AR)。创建了一个多学科的协作工作团队,旨在结合精益制造和六西格玛工具部署AR计划。部署了四个改进和学习周期,并定义了关键绩效指标来收集和衡量数据,以分析所实现的改进。AR计划在电力滤波器设备的生产线中的应用实现了生产时间和制造过程中质量指标的改进。最突出的结果是改善了初始吞吐量时间(34.78%)和平均每日拒绝(73.53%)。此外,AR倡议为商界和学术界做出了实践和理论贡献,允许AR计划应用于公司的其他领域,并有助于该方法在工业应用中的最新技术。
    Optimising available resources and minimising production costs and throughput time is vital for first-tier suppliers in the worldwide automotive sector. To develop this type of optimisation and efficiency, MAHLE applied Action Research (AR) in one of its factories located in Spain. A multidisciplinary collaborative work team was created with the aim of deploying the AR initiative in combination with Lean Manufacturing and Six Sigma tools. Four improvement and learning cycles were deployed and key performance metrics were defined to collect and measure data in order to analyse the improvements achieved. The application of the AR initiative in the production line of a power filter device enabled improvements in both production times and quality indicators in the manufacturing process. The most outstanding results were the improvements made in the decrease in initial throughput time (34.78%) and in average daily rejections (73.53%). In addition, the AR initiative generated practical and theoretical contributions for business and academia, allowing the AR initiative to be applied in other areas of the company, and contributing to the current state of the art in the industrial application of this methodology.
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  • 文章类型: Journal Article
    社区药房代表了高度可访问和方便的疫苗接种环境。然而,存在特定设置的障碍,这些障碍导致疫苗接种率欠佳,特别是肺炎球菌疫苗接种。精益六西格玛(LSS)是在医疗保健环境中使用的一种久经考验的质量改进框架。本文介绍了LSS框架在国家药房链的某些位置中的应用。还解决了实施改进推荐技术的培训计划,以提高高危成人人群的肺炎球菌疫苗接种率。使用了混合方法方法,包括预/后准实验设计和深入的关键线人访谈。
    Community pharmacies represent a highly accessible and convenient setting for vaccination. However, setting-specific barriers exist which contribute to suboptimal vaccination rates, particularly for pneumococcal vaccinations. One proven quality improvement framework growing in use within healthcare settings is Lean Six Sigma (LSS). This paper describes the application of the LSS framework in select locations of a national pharmacy chain. The implementation of a training program for improved recommendation techniques to promote higher rates of pneumococcal vaccinations in high-risk adult populations is also addressed. A mixed-methods approach including pre/post quasi-experimental design and in-depth key informant interviews was used.
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