resource-limited settings

资源受限设置
  • 文章类型: Journal Article
    背景:多模态监测是使用来自多个生理传感器的数据以某种方式组合以提供个性化的患者管理。它在创伤性脑损伤患者的平民护理中变得司空见惯。我们假设我们可以使用非侵入性传感器套件和基于人工智能的患者管理指导系统将该技术带到战场。
    方法:与军事医务人员合作,我们收集了对手持式系统的要求,该系统将适应迅速发展的神经重症监护领域。要选择最佳传感器,我们开发了一种方法来评估传感器测量在管理脑损伤中的价值和在战场上部署传感器的负担。我们将其称为“价值负担分析”,该分析得出了按护理作用加权的分数。使用7个标准评估该值,其中1是临床医生共识评估的临床价值。使用16个因素来评估负担,如大小,体重,和易用性。我们对17个传感器进行了评估和评分,以测试评估方法。此外,我们开发了一个制导系统的设计,建造了一个原型,并测试了可行性。
    结果:系统的最终体系结构是模块化的,需要开发包括传感器在内的每个组件的互操作描述,指导步骤,药物,分析,资源,以及护理的背景。创建了一个知识库来描述模块的交互。原型测试设置证明了系统的可行性,因为模拟的生理输入将模仿当前长期护理中创伤性脑损伤临床实践指南(CPGID:63)提供的指导。价值负担分析得出了传感器的排名以及在知识库中有用的传感器元数据。
    结论:我们开发了一种系统的设计并测试了该系统的可行性,该系统将允许在正向护理中使用生理生物标志物作为管理工具。一个关键特征是模块化设计,允许系统适应传感器的变化,资源,和背景以及指南的更新。继续的工作包括使用模拟场景对概念进行进一步验证。
    BACKGROUND: Multimodal monitoring is the use of data from multiple physiological sensors combined in a way to provide individualized patient management. It is becoming commonplace in the civilian care of traumatic brain-injured patients. We hypothesized we could bring the technology to the battlefield using a noninvasive sensor suite and an artificial intelligence-based patient management guidance system.
    METHODS: Working with military medical personnel, we gathered requirements for a hand-held system that would adapt to the rapidly evolving field of neurocritical care. To select the optimal sensors, we developed a method to evaluate both the value of the sensor\'s measurement in managing brain injury and the burden to deploy that sensor in the battlefield. We called this the Value-Burden Analysis which resulted in a score weighted by the Role of Care. The Value was assessed using 7 criteria, 1 of which was the clinical value as assessed by a consensus of clinicians. The Burden was assessed using 16 factors such as size, weight, and ease of use. We evaluated and scored 17 sensors to test the assessment methodology. In addition, we developed a design for the guidance system, built a prototype, and tested the feasibility.
    RESULTS: The resulting architecture of the system was modular, requiring the development of an interoperable description of each component including sensors, guideline steps, medications, analytics, resources, and the context of care. A Knowledge Base was created to describe the interactions of the modules. A prototype test set-up demonstrated the feasibility of the system in that simulated physiological inputs would mimic the guidance provided by the current Clinical Practice Guidelines for Traumatic Brain Injury in Prolonged Care (CPG ID:63). The Value-Burden analysis yielded a ranking of sensors as well as sensor metadata useful in the Knowledge Base.
    CONCLUSIONS: We developed a design and tested the feasibility of a system that would allow the use of physiological biomarkers as a management tool in forward care. A key feature is the modular design that allows the system to adapt to changes in sensors, resources, and context as well as to updates in guidelines as they are developed. Continued work consists of further validation of the concept with simulated scenarios.
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  • 文章类型: Journal Article
    我们设计用于临床数据采集和记录研究的原型系统是一种新颖的电子数据捕获(EDC)软件,用于临床研究中简单而轻便的数据捕获。现有的软件工具要么昂贵,要么功能非常有限。为了克服这些缺点,我们设计了一个EDC软件和一个移动客户端。我们的目标是使其易于设置,可修改,可扩展,从而促进研究。我们使用模块化方法在R中编写了软件,并实现了现有的数据标准以及元数据驱动接口和数据库结构。原型是一个适应性强的开源软件,它可以在本地或云中安装,而无需高级IT知识。添加了用于移动使用和台式计算机的移动Web界面和渐进式Web应用程序。我们展示了软件的能力,通过展示四项临床研究,超过1600名参与者和每个参与者679个变量。我们描述了服务器安装的简单部署方法,并指出了更多的用例。该软件可在MIT开源许可下获得。总而言之,该软件是通用的,易于部署,高度可修改,并且对于临床研究具有极大的可扩展性。作为一个开源的R软件,它是可访问的,对未来社区驱动的发展和改进持开放态度。
    Our prototype system designed for clinical data acquisition and recording of studies is a novel electronic data capture (EDC) software for simple and lightweight data capture in clinical research. Existing software tools are either costly or suffer from very limited features. To overcome these shortcomings, we designed an EDC software together with a mobile client. We aimed at making it easy to set-up, modifiable, scalable and thereby facilitating research. We wrote the software in R using a modular approach and implemented existing data standards along with a meta data driven interface and database structure. The prototype is an adaptable open-source software, which can be installed locally or in the cloud without advanced IT-knowledge. A mobile web interface and progressive web app for mobile use and desktop computers is added. We show the software\'s capability, by demonstrating four clinical studies with over 1600 participants and 679 variables per participant. We delineate a simple deployment approach for a server-installation and indicate further use-cases. The software is available under the MIT open-source license. Conclusively the software is versatile, easily deployable, highly modifiable, and extremely scalable for clinical studies. As an open-source R-software it is accessible, open to community-driven development and improvement in the future.
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  • 文章类型: Journal Article
    SARS-CoV-2循环的监测主要基于实时逆转录-聚合酶链反应,这需要实验室设施和冷链来运输样品。这在资源有限的偏远农村地区很难实现。在室温下运输的干燥血斑的使用显示出检测虫媒病毒RNA的良好效率。使用类似的方法,我们在老挝的3家省级医院进行了一项研究,以比较从干净和干燥的斑点样品中检测到的SARS-CoV-2。
    在2022年1月至2023年3月之间,招募了有呼吸道症状的患者。病毒转运介质(VTM)中的鼻咽/口咽拭子,干拭子,唾液,收集在滤纸上的干唾液。所有样品均通过SARS-CoV-2实时逆转录聚合酶链反应进行测试。
    总共,包括479名参与者。VTM样品测试为288(60.1%)阳性。与VTM相比,干拭子(84.8%;95%CI,80.2%-88.8%)和唾液(89.2%;95%CI,85.1%-92.6%)观察到较高的阳性百分比一致性。与唾液相比,当唾液在滤纸上干燥时存在灵敏度损失(73.6%;95%CI,68.1%-78.6%)。SARS-CoV-2变体(Delta或Omicron)对不同样品类型的性能没有显着影响。
    我们的发现表明,干拭子可能是样品收集的良好替代方法,并且可以在环境温度下轻松运输,用于随后的SARS-CoV-2病毒RNA纯化和分子研究。这是一个有用的工具,可以考虑在偏远地区快速实施SARS-CoV-2的大规模监测,在常规监测期间或在新出现的大流行的情况下,可以外推到其他呼吸目标。
    UNASSIGNED: Surveillance of SARS-CoV-2 circulation is mainly based on real-time reverse transcription-polymerase chain reaction, which requires laboratory facilities and cold chain for sample transportation. This is difficult to achieve in remote rural areas of resource-limited settings. The use of dried blood spots shipped at room temperature has shown good efficiency for the detection of arboviral RNA. Using a similar approach, we conducted a study at 3 provincial hospitals in Laos to compare the detection of SARS-CoV-2 from neat and dried spot samples.
    UNASSIGNED: Between January 2022 and March 2023, patients with respiratory symptoms were recruited. Nasopharyngeal/oropharyngeal swabs in virus transport medium (VTM), dry swabs, saliva, and dried saliva spotted on filter paper were collected. All samples were tested by SARS-CoV-2 real-time reverse transcription-polymerase chain reaction.
    UNASSIGNED: In total, 479 participants were included. The VTM samples tested positive for 288 (60.1%). High positive percent agreements were observed for dry swab (84.8%; 95% CI, 80.2%-88.8%) and saliva (89.2%; 95% CI, 85.1%-92.6%) as compared with VTM. There was a loss of sensitivity when saliva was dried on filter paper (73.6%; 95% CI, 68.1%-78.6%) as compared with saliva. SARS-CoV-2 variant (Delta or Omicron) had no significant impact on the performance of the different sample types.
    UNASSIGNED: Our findings suggest that dry swabs could be a good alternative for sample collection and permit easy shipping at ambient temperature for subsequent viral SARS-CoV-2 RNA purification and molecular investigation. This is a useful tool to consider for a rapid implementation of large-scale surveillance of SARS-CoV-2 in remote areas, which could be extrapolated to other respiratory targets during routine surveillance or in the case of a novel emerging pandemic.
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  • 文章类型: Journal Article
    人工智能(AI)用于护理点超声(POCUS)的进步为低资源环境中的医疗诊断带来了新的可能性。这篇评论探讨了这些环境中POCUS中AI应用的当前情况,分析来自三个数据库的研究-SCOPUS,pubmed,谷歌学者最初,确定了1196条记录,其中1167篇文章在两阶段筛查后被排除在外,留下29项独特的研究供审查。大多数研究都集中在深度学习算法上,以促进资源受限环境中的POCUS操作和解释。针对各种类型的低资源设置,非常重视低收入和中等收入国家(LMICs),农村/偏远地区,和紧急情况。确定的显著限制包括在普遍性方面的挑战,数据集可用性,研究中的区域差异,患者依从性,和道德考虑。此外,POCUS设备缺乏标准化,协议,算法成为人工智能实施的一个重要障碍。不同领域的POCUSAI应用的多样性(例如,肺,臀部,心,等。)说明了必须针对每个应用程序的特定需求进行定制的挑战。通过按应用领域分离出分析,研究人员将更好地理解人工智能的不同影响和局限性,使研究和开发工作与每种临床状况的独特特征保持一致。尽管面临这些挑战,POCUSAI系统通过在低资源环境中帮助临床医生,在弥合医疗保健交付差距方面显示出希望。未来的研究工作应优先解决本综述中发现的差距,以增强POCUSAI应用程序的可行性和有效性,以改善资源受限环境中的医疗保健结果。
    Advancements in artificial intelligence (AI) for point-of-care ultrasound (POCUS) have ushered in new possibilities for medical diagnostics in low-resource settings. This review explores the current landscape of AI applications in POCUS across these environments, analyzing studies sourced from three databases-SCOPUS, PUBMED, and Google Scholars. Initially, 1196 records were identified, of which 1167 articles were excluded after a two-stage screening, leaving 29 unique studies for review. The majority of studies focused on deep learning algorithms to facilitate POCUS operations and interpretation in resource-constrained settings. Various types of low-resource settings were targeted, with a significant emphasis on low- and middle-income countries (LMICs), rural/remote areas, and emergency contexts. Notable limitations identified include challenges in generalizability, dataset availability, regional disparities in research, patient compliance, and ethical considerations. Additionally, the lack of standardization in POCUS devices, protocols, and algorithms emerged as a significant barrier to AI implementation. The diversity of POCUS AI applications in different domains (e.g., lung, hip, heart, etc.) illustrates the challenges of having to tailor to the specific needs of each application. By separating out the analysis by application area, researchers will better understand the distinct impacts and limitations of AI, aligning research and development efforts with the unique characteristics of each clinical condition. Despite these challenges, POCUS AI systems show promise in bridging gaps in healthcare delivery by aiding clinicians in low-resource settings. Future research endeavors should prioritize addressing the gaps identified in this review to enhance the feasibility and effectiveness of POCUS AI applications to improve healthcare outcomes in resource-constrained environments.
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  • 文章类型: Journal Article
    本研究旨在评估不坚持复方新诺明预防治疗的患病率和原因。在艾德综合专科医院就诊的HIV感染者中进行了一项横断面研究。数据是通过访谈和病历审查收集的。采用二元logistic回归分析与CPT不依从相关的因素。大约三分之二(65.5%)的参与者不坚持复方新诺明预防疗法。不坚持的主要原因是副作用,药丸疲劳和健忘。提高复方新诺明预防治疗依从性的策略应侧重于合并患者,艾滋病毒感染者的临床和药物相关问题。
    This study aimed to assess the prevalence and reasons for nonadherence to cotrimoxazole prophylaxis therapy. A cross-sectional study was conducted among people living with HIV attending Ayder Comprehensive Specialized Hospital. Data were collected through interviews and reviews of medical records. Binary logistic regression was employed to analyze factors associated with CPT nonadherence. Approximately two-thirds (65.5%) of the participants were non-adherent to co-trimoxazole prophylaxis therapy. The main reasons for non-adherence were side effects, pill fatigue and forgetfulness. Strategies to improve adherence to co-trimoxazole prophylaxis therapy should focus on the combined patient, clinical and medication related issues of people living with HIV.
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  • 文章类型: Journal Article
    目的:建立并验证同时检测隐孢子虫的多重常规PCR检测方法。,溶组织内阿米巴,和贾第鞭毛虫在腹泻样本中作为一种快速,成本效益高,和敏感的诊断工具,用于在资源有限的环境中提高诊断的准确性和效率。
    方法:在接受书面同意后,从有胃肠道症状的患者收集粪便样本,通过湿式安装处理,碘坐骑,和PCR检测。进行Cohen的kappa统计分析以检验一致性。
    结果:在240名患者中,28.75%镜检显示肠道原虫;单重和多重PCR显示100%一致性,检测27.9%;经测序证实。在移植和免疫功能低下的患者中观察到最高的寄生虫阳性,在显微镜和分子方法之间具有中等到几乎完美的一致性。
    结论:多重常规PCR提供优于显微镜的灵敏度和特异性,与单一PCR100%一致,快速启用,从单个粪便样本中诊断多种寄生虫的成本效益高。它的采用可能会彻底改变常规诊断中的寄生虫感染管理。
    OBJECTIVE: To develop and validate a multiplex conventional PCR assay to simultaneously detect Cryptosporidium spp., Entamoeba histolytica, and Giardia lamblia in diarrheal samples as a rapid, cost-effective, and sensitive diagnostic tool for prevalent co-infections for improved diagnostic accuracy and efficiency in resource-limited settings.
    METHODS: Stool samples collected from patients with gastrointestinal symptoms after taking written consent, processed via wet mount, iodine mount, and PCR assays. Cohen\'s kappa statistical analysis was done to test agreement.
    RESULTS: Among 240 patients, 28.75% showed intestinal protozoa via Microscopy; Single-plex and multiplex PCR demonstrated 100% concordance, detecting 27.9%; confirmed by sequencing. Highest parasite positivity was observed in transplant and immunocompromised patients, with moderate to almost perfect agreement between microscopy and molecular methods.
    CONCLUSIONS: Multiplex-conventional PCR offers superior sensitivity and specificity over microscopy and 100% concordance with single-plex PCR, enabling rapid, cost-effective diagnosis of multiple parasites from single stool sample. Its adoption could revolutionize parasitic infection management in routine diagnostics.
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  • 文章类型: Journal Article
    背景:起搏器(PM)用于治疗具有严重心动过缓症状的患者。他们确实如此,然而,构成几个并发症。即使有这些风险,只有少数研究在资源有限的环境中评估PM植入结局,如埃塞俄比亚和其他撒哈拉以南国家.因此,本研究旨在通过确定并发症和死亡的发生率和预测因素,评估在埃塞俄比亚心脏中心接受PM植入的患者中,PM植入的中期结局.
    方法:这项回顾性研究于2023年10月至2024年1月在埃塞俄比亚心脏中心对2012年9月至2023年8月进行了PM植入的患者进行评估,以评估患者的中期预后。并发症率和全因死亡率是我们研究的结果。多变量logistic回归分析与并发症和死亡相关的因素。为了分析生存时间,进行了Kaplan-Meier分析.
    结果:这项回顾性随访研究包括182例患者,这些患者在2012年9月至2023年8月之间进行了PM植入,年龄至少为18岁。患者的中位随访时间为72个月(四分位距(IQR):36-96个月)。在研究结束时,26.4%的患者出现并发症。最常见的三种并发症是导线移位,这影响了6.6%的患者,PM引起的心动过速,影响了5.5%的患者,和早期的电池耗尽,这影响了5.5%的患者。年龄较大(调整后赔率比(AOR)1.1,95%CI1.04-1.1,p值<0.001),女性(AOR4.5,95CI2-9.9,p值<0.001),双腔PM(AOR2.95,95CI1.14-7.6,p值=0.006)是并发症的预测因子.31例(17%)患者在随访期间死亡。我们的患者在3年,5年和10年的生存率为94.4%,92.1%,和65.5%,中位生存时间为11年。PM植入前Charlson合并症指数较高的患者(AOR1.2,95%CI1.1-1.8,p=0.04),存在并发症(AOR3.5,95%CI1.2-10.6,p<0.03),纽约心脏协会(NYHA)III级或IV级(AOR3.3,95%CI1.05-10.1,p=0.04)与死亡率相关.
    结论:植入PMs的患者会出现许多并发症,和几个因素影响他们的预后。因此,必须确定并发症和死亡率的预测因子,以优先考虑和解决与死亡率和并发症相关的可管理因素.
    BACKGROUND: Pacemakers (PMs) are used to treat patients with severe bradycardia symptoms. They do, however, pose several complications. Even with these risks, there are only a few studies assessing PM implantation outcomes in resource-limited settings like Ethiopia and other sub-Saharan countries in general. Therefore, this study aims to assess the mid-term outcome of PM implantation in patients who have undergone PM implantation in the Cardiac Center of Ethiopia by identifying the rate and predictors of complications and death.
    METHODS: This retrospective study was conducted at the Cardiac Center of Ethiopia from October 2023 to January 2024 on patients who had PM implantation from September 2012 to August 2023 to assess the midterm outcome of the patients. Complication rate and all-cause mortality rate were the outcomes of our study. Multivariable logistic regression was used to identify factors associated with complications and death. To analyze survival times, a Kaplan-Meier analysis was performed.
    RESULTS: This retrospective follow-up study included 182 patients who underwent PM implantation between September 2012 and August 2023 and were at least 18 years old. The patients\' median follow-up duration was 72 months (Interquartile range (IQR): 36-96 months). At the end of the study, 26.4% of patients experienced complications. The three most frequent complications were lead dislodgement, which affected 6.6% of patients, PM-induced tachycardia, which affected 5.5% of patients, and early battery depletion, which affected 5.5% of patients. Older age (Adjusted Odds Ratio (AOR) 1.1, 95% CI 1.04-1.1, p value < 0.001), being female (AOR 4.5, 95%CI 2-9.9, p value < 0.001), having dual chamber PM (AOR 2.95, 95%CI 1.14-7.6, p value = 0.006) were predictors of complications. Thirty-one (17%) patients died during the follow-up period. The survival rates of our patients at 3, 5, and 10 years were 94.4%, 92.1%, and 65.5% respectively with a median survival time of 11 years. Patients with a higher Charlson comorbidity index before PM implantation (AOR 1.2, 95% CI 1.1-1.8, p = 0.04), presence of complications (AOR 3.5, 95% CI 1.2-10.6, p < 0.03), and New York Heart Association (NYHA) class III or IV (AOR 3.3, 95% CI 1.05-10.1, p = 0.04) were associated with mortality.
    CONCLUSIONS: Many complications were experienced by patients who had PMs implanted, and several factors affected their prognosis. Thus, it is essential to identify predictors of both complications and mortality to prioritize and address the manageable factors associated with both mortality and complications.
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  • 文章类型: Journal Article
    心血管疾病(CVD)是全球范围内死亡的主要原因,特别是在资源有限的国家,获得医疗资源的机会有限。早期检测和准确成像对于管理CVD至关重要,强调患者教育的重要性。生成人工智能(AI)包括合成文本的算法,演讲,images,以及在特定场景或提示下的组合,为加强患者教育提供了有希望的解决方案。通过结合视觉和语言模型,生成AI通过自然语言交互实现个性化多媒体内容生成,有益于心血管影像学的患者教育。模拟,基于聊天的互动,基于语音的界面可以增强可访问性,尤其是在资源有限的环境中。尽管有潜在的好处,在资源有限的国家实施生成式人工智能面临数据质量等挑战,基础设施限制,和道德考虑。解决这些问题对于成功采用至关重要。还必须克服与数据隐私和准确性相关的道德挑战,以确保更好的患者理解。治疗依从性,改善医疗保健结果。继续研究,创新,在生成AI中的合作有可能彻底改变患者的教育。这可以使患者对心血管健康做出明智的决定,最终在资源有限的环境中改善医疗保健结果。
    Cardiovascular disease (CVD) is a major cause of mortality worldwide, especially in resource-limited countries with limited access to healthcare resources. Early detection and accurate imaging are vital for managing CVD, emphasizing the significance of patient education. Generative artificial intelligence (AI), including algorithms to synthesize text, speech, images, and combinations thereof given a specific scenario or prompt, offers promising solutions for enhancing patient education. By combining vision and language models, generative AI enables personalized multimedia content generation through natural language interactions, benefiting patient education in cardiovascular imaging. Simulations, chat-based interactions, and voice-based interfaces can enhance accessibility, especially in resource-limited settings. Despite its potential benefits, implementing generative AI in resource-limited countries faces challenges like data quality, infrastructure limitations, and ethical considerations. Addressing these issues is crucial for successful adoption. Ethical challenges related to data privacy and accuracy must also be overcome to ensure better patient understanding, treatment adherence, and improved healthcare outcomes. Continued research, innovation, and collaboration in generative AI have the potential to revolutionize patient education. This can empower patients to make informed decisions about their cardiovascular health, ultimately improving healthcare outcomes in resource-limited settings.
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