Covid

COVID
  • 文章类型: Case Reports
    Takotsubo综合征(TTS)是一种模仿急性冠状动脉综合征的罕见疾病,通常由身体或情绪压力引发,以短暂性左心室功能障碍为特征。在大约5%的病例中描述了复发,并且可能具有不同的临床和成像模式。在本报告中,SARS-COV-2感染,即使没有症状和明显的情绪压力,似乎与TTS的复发有关,由于缺少其他已识别的触发器。假设是在易感患者中,儿茶酚胺诱导的心肌细胞损伤等事件,直接病毒损害,细胞因子风暴,免疫介导的损伤,和促凝血状态,所有这些都可能是由感染引起的,可能引起内皮功能障碍作为TTS发作的底物。
    Takotsubo syndrome (TTS) is a rare disease mimicking acute coronary syndrome, often triggered by physical or emotional stress, and characterized by transient left ventricular dysfunction. Recurrences are described in about 5% of cases and may have different clinical and imaging patterns. In the present report, SARS-COV-2 infection, even in the absence of symptoms and overt emotional stress, seems correlated with recurrence of TTS, due to the absence of other recognized triggers. The hypothesis is that in predisposed patients, events like catecholamine-induced myocyte injury, direct viral damage, cytokine storm, immune-mediated damage, and procoagulant state, all possibly induced by the infection, may elicit endothelial dysfunction as substrate for TTS onset.
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  • 文章类型: Journal Article
    静止原脱发的特征是通常在压力事件后过度脱落。铁蛋白已在临床实践中用作非贫血性铁缺乏症的生物标志物。在COVID19大流行期间,据报道,端粒脱落是covid后表现的一部分。由于铁蛋白也是covid感染病例中炎症的生物标志物,这项研究的目的是评估铁蛋白的价值与后covid端程脱落的情况下,100名患者从covid19恢复4-12周纳入研究,获得了详细的药物和实验室病史,并测量了血清铁蛋白水平。静止期脱发患者的平均血清铁蛋白水平显着低于对照组(分别为68.52±126和137±137.597ug/L)。有止动素流出的患者使用的阿奇霉素和伊维菌素明显较多,维生素C明显较少,D,乳铁蛋白和锌比对照组,虽然血清铁蛋白较低,它仍然高于诊断非贫血性缺铁症的临界值,我们建议在这些病例中它不是一个好的生物标志物.我们的次要结果显示,在活动性感染期间使用的膳食补充剂,如维生素C,D,乳铁蛋白和锌可能具有预防后covid脱发的价值,而阿奇霉素和伊维菌素可能对止动素产生长期负面影响。
    Telogen effluvium is characterized by excessive hair shedding usually following a stressful event. Ferritin has been used in clinical practice as a biomarker of nonanemic iron deficiency in cases of telogen effluvium. During the years of the COVID19 pandemic, telogen effluvium was reported as a part of post covid manifestations. As ferritin was also a biomarker for inflammation in cases with covid infection, this study was designed to evaluate the value of ferritin in cases with postcovid telogen effluvium one hundred patients recovering from covid 19 for 4-12 weeks were included in the study, detailed drug and laboratory history was obtained and serum ferritin level was measured. the mean serum level of ferritin among telogen effluvium patients was significantly lower than controls (68.52 ± 126 and 137 ± 137.597 ug/L respectively). Patients with telogen effluvium used significantly more azithromycin and ivermectin and significantly less vitamin C, D, lactoferrin and zinc than the controls Although serum ferritin is lower among telogen effluvium patients, it was still higher than the cutoff value for diagnosing nonanemic iron deficiency, we suggest that it will not be a good biomarkers in these cases. Our secondary outcomes showed that dietary supplements used during active infection such as vitamin C, D, lactoferrin and zinc might have a preventive value on postcovid hair loss, while azithromycin and ivermectin could have a negative long term effect on telogen effluvium.
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  • 文章类型: Journal Article
    背景:研究空白是指现有知识体系中未回答的问题,由于缺乏研究或结果不确定。研究差距是科学研究的重要起点和动力。确定研究差距的传统方法,如文献综述和专家意见,可能很耗时,劳动密集型,而且容易产生偏见.在处理快速发展或时间敏感的主题时,它们也可能不足。因此,需要创新的可扩展方法来确定研究差距,系统地评估文献,并优先考虑感兴趣的主题的进一步研究领域。
    目的:在本文中,我们提出了一种基于机器学习的方法,通过分析科学文献来识别研究差距。我们使用COVID-19大流行作为案例研究。
    方法:我们使用COVID-19开放研究(CORD-19)数据集进行了分析,以确定COVID-19文献中的研究空白,其中包括1,121,433篇与COVID-19大流行有关的论文。我们的方法基于BERTopic主题建模技术,它利用转换器和基于类的术语频率-逆文档频率来创建密集的集群,从而允许易于解释的主题。我们基于BERTopic的方法涉及3个阶段:嵌入文档,聚类文档(降维和聚类),和代表主题(生成候选和最大化候选相关性)。
    结果:应用研究选择标准后,我们在本研究的分析中纳入了33,206篇摘要.最终的研究差距清单确定了21个不同的领域,分为6个主要主题。这些主题是:\“COVID-19的病毒”,\“COVID-19的危险因素”,\“预防COVID-19”,\“COVID-19的治疗”,\“COVID-19期间的医疗保健服务,\”和COVID-19的影响。\"最突出的话题,在超过一半的分析研究中观察到,是“COVID-19的影响。
    结论:提出的基于机器学习的方法有可能发现科学文献中的研究空白。本研究并非旨在取代选定主题内的个别文献研究。相反,它可以作为指导,在与以前的出版物指定用于未来探索的研究问题相关的特定领域制定精确的文献检索查询。未来的研究应该利用从目标区域最常见的数据库中检索到的最新研究列表。在可行的情况下,全文或,至少,应该对讨论部分进行分析,而不是将其分析局限于摘要。此外,未来的研究可以评估更有效的建模算法,尤其是那些将主题建模与统计不确定性量化相结合的方法,如共形预测。
    BACKGROUND: Research gaps refer to unanswered questions in the existing body of knowledge, either due to a lack of studies or inconclusive results. Research gaps are essential starting points and motivation in scientific research. Traditional methods for identifying research gaps, such as literature reviews and expert opinions, can be time consuming, labor intensive, and prone to bias. They may also fall short when dealing with rapidly evolving or time-sensitive subjects. Thus, innovative scalable approaches are needed to identify research gaps, systematically assess the literature, and prioritize areas for further study in the topic of interest.
    OBJECTIVE: In this paper, we propose a machine learning-based approach for identifying research gaps through the analysis of scientific literature. We used the COVID-19 pandemic as a case study.
    METHODS: We conducted an analysis to identify research gaps in COVID-19 literature using the COVID-19 Open Research (CORD-19) data set, which comprises 1,121,433 papers related to the COVID-19 pandemic. Our approach is based on the BERTopic topic modeling technique, which leverages transformers and class-based term frequency-inverse document frequency to create dense clusters allowing for easily interpretable topics. Our BERTopic-based approach involves 3 stages: embedding documents, clustering documents (dimension reduction and clustering), and representing topics (generating candidates and maximizing candidate relevance).
    RESULTS: After applying the study selection criteria, we included 33,206 abstracts in the analysis of this study. The final list of research gaps identified 21 different areas, which were grouped into 6 principal topics. These topics were: \"virus of COVID-19,\" \"risk factors of COVID-19,\" \"prevention of COVID-19,\" \"treatment of COVID-19,\" \"health care delivery during COVID-19,\" \"and impact of COVID-19.\" The most prominent topic, observed in over half of the analyzed studies, was \"the impact of COVID-19.\"
    CONCLUSIONS: The proposed machine learning-based approach has the potential to identify research gaps in scientific literature. This study is not intended to replace individual literature research within a selected topic. Instead, it can serve as a guide to formulate precise literature search queries in specific areas associated with research questions that previous publications have earmarked for future exploration. Future research should leverage an up-to-date list of studies that are retrieved from the most common databases in the target area. When feasible, full texts or, at minimum, discussion sections should be analyzed rather than limiting their analysis to abstracts. Furthermore, future studies could evaluate more efficient modeling algorithms, especially those combining topic modeling with statistical uncertainty quantification, such as conformal prediction.
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  • 文章类型: Case Reports
    在COVID-19大流行期间,隔离对日常社会和经济活动造成了干扰。许多人感到被困和孤独,经历越来越多的担忧和财务困难。大量研究表明,COVID-19大流行会增加抑郁和焦虑症状,以及自杀的想法和尝试,特别是在弱势群体中。我们报告了在COVID-19爆发期间,由于封锁和相关的财务困难,有4例自杀未遂。这些病例于2020年4月至2020年6月入住综合医院。病人都是男性,冠状病毒检测呈阴性,并通过绞刑和割喉实施暴力自杀。在接受适当的治疗后,所有病例均出院。COVID-19大流行及其经济和社会影响可能会对弱势群体造成重大影响。筛查和早期干预在避免大流行的心理健康后果中起作用。
    During the COVID-19 pandemic, quarantine has caused disruptions to daily social and economic activities. Many people have felt trapped and alone, experiencing rising levels of worry and financial hardships. Numerous studies have demonstrated that the COVID-19 pandemic increases depression and anxiety symptoms, as well as suicidal ideas and attempts, particularly in vulnerable individuals. We report four cases of suicidal attempts during the COVID-19 outbreak due to the lockdown and related financial difficulties. Those cases were admitted to a general hospital from April 2020 to June 2020. The patients were all male, had negative coronavirus tests, and committed violent suicides by hanging and slitting their throats. After receiving the appropriate treatment, all cases were discharged from the hospital. The COVID-19 pandemic and its economic and social impacts could result in significant consequences for vulnerable persons. Screening and early intervention play a role in averting the pandemic\'s mental health consequences.
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  • 文章类型: Case Reports
    我们介绍了一例急性黄斑神经视网膜病变(AMN),导致2019年冠状病毒病(COVID-19)感染诊断。一名27岁的女性患者,有流感样症状,后来被证明是COVID-19感染,出现急性发作的双侧灰色样中央旁暗点瘤。眼底检查显示色素减退,右眼颞上近凹区域的楔形病变,而在左眼没有发现明显的发现。红外反射图像显示黄斑旁凹区域的双侧低反射病变。光谱域光学相干断层扫描扫描在外核层中检测到的焦点高反射率的相应区域,并在椭球区和视网膜色素上皮层中破坏。基于这些发现,考虑了AMN诊断。通过聚合酶链反应测试确认了COVID-19感染的诊断。COVID-19疾病可能导致视网膜血管并发症,如AMN。AMN,与COVID-19感染有共同的病毒前驱症状,可能是COVID-19感染的表现。
    We present a case of Acute Macular Neuroretinopathy (AMN), which led to the coronavirus disease of 2019 (COVID-19) infection diagnosis. A 27-year-old female patient with flu-like symptoms later proven to be COVID-19 infection presented with acute-onset bilateral gray-like paracentral scotomas. Fundus examination showed a hypopigmented, wedge-like lesion on the superior temporal juxtafoveal area in the right eye, while no significant finding was found in the left eye. Infrared reflectance images demonstrated bilateral hyporeflective lesions in the parafoveal regions of the macula. Spectral-domain optical coherence tomography scans over the corresponding areas detected focal hyperreflectivity in the outer nuclear layer with disruption in the ellipsoid zone and retinal pigment epithelium layers. Based on these findings, the AMN diagnosis was considered. The COVID-19 infection diagnosis was confirmed by a polymerase chain reaction test. COVID-19 disease may cause retinal vascular complications such as AMN. AMN, which shares common viral prodromal symptoms with COVID-19 infection, may be a presenting sign of COVID-19 infection.
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  • 文章类型: Journal Article
    本文已迁移。这篇文章被标记为推荐。目的结构化临床检查(OSCEs)被广泛用于卫生专业的临床评估。然而,许多大学目前的社交距离要求(包括校内禁令)使得大型队列OSCEs的参与者不可能在同一地点工作。虽然有关于远程OSCEs的发展文献,特别是在应对COVID-19大流行时,这主要是处理少量参与者的方法。本文介绍了我们最近大规模(n=361个候选人)实施的远程交付2站OSCE。这个欧安组织的规划是广泛的,涉及全面的候选人,考官和模拟患者定向和培训。我们的流程明确设计为所有参与者开发平台熟悉度,包括构建远程教程体验和设备测试。我们的远程OSCE设计和物流利用了现有的企业解决方案,包括视频会议,调查和协作平台,并在技术问题的情况下允许候选人之间的额外时间。我们详细描述了我们的过程,包括考官,模拟病人,和候选人的观点来提供精确的细节,希望协助其他机构理解和采用我们的方法。尽管后勤复杂,我们已经证明,使用常用的企业解决方案,可以提供一个涉及大型学生群体的远程OSCE评估,其中站点数量有限.我们认识到,在站点和审查员之间进行更广泛的采样将是理想的选择,然而,鉴于我们当前受COVID-19影响的环境的限制,我们认为,对于目前的非毕业群体来说,这是一个适当的妥协。
    This article was migrated. The article was marked as recommended. Objective Structured Clinical Examinations (OSCEs) are extensively used for clinical assessment in the health professions. However, current social distancing requirements (including on-campus bans) at many universities have made the co-location of participants for large cohort OSCEs impossible. While there is a developing literature on remote OSCEs, particularly in response to the COVID-19 pandemic, this is dominated by approaches dealing with small participant numbers. This paper describes our recent large scale (n = 361 candidates) implementation of a remotely delivered 2 station OSCE. The planning for this OSCE was extensive and involved comprehensive candidate, examiner and simulated patient orientation and training. Our processes were explicitly designed to develop platform familiarity for all participants and included building on remote tutorial experiences and device testing. Our remote OSCE design and logistics made use of using existing enterprise solutions including videoconferencing, survey and collaboration platforms and allowed extra time between candidates in case of technical issues. We describe our process in detail including examiner, simulated patient, and candidate perspectives to provide precise detail, hopefully assisting other institutions to understand and adopt our approach. Although logistically complex, we have demonstrated that it is possible to deliver a remote OSCE assessment involving a large student cohort with a limited number of stations using commonly available enterprise solutions. We recognise it would be ideal to sample more broadly across stations and examiners, yet given the constraints of our current COVID-19 impacted environment, we believe this to be an appropriate compromise for a non-graduating cohort at this time.
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  • 文章类型: Journal Article
    背景:2021年12月,区域1灾害健康响应系统,佛蒙特州,和国家紧急远程重症监护网络合作,在COVID-19突发情况下,在全州范围内提供灾难远程咨询。在这个案例报告中,我们描述了在OmicronCOVID-19激增期间,佛蒙特州如何实施灾难远程咨询系统,以提供临时远程重症监护咨询。方法:我们测量了从请求服务到实施服务的时间,并计算了描述性统计数据。结果:佛蒙特州的14家医院中有7家要求提供服务。尽管技术解决方案能够在数小时内提供服务,平均服务实施时间为27天(四分位距20-41天).结论:需要将灾难远程咨询系统集成到州和地方应急管理计划中,以使行政启动时间与技术准备保持一致。
    Background: In December 2021, the Region 1 Disaster Health Response System, the state of Vermont, and the National Emergency Tele-Critical Care Network partnered to provide statewide access to disaster teleconsultations during COVID-19 surge conditions. In this case report, we describe how a disaster teleconsultation system was implemented in Vermont to provide access to temporary tele-critical care consultations during the Omicron COVID-19 surge. Methods: We measured the time from request of service to implementation and calculated descriptive statistics. Results: Seven of Vermont\'s 14 hospitals requested the service. Despite a technology solution capable of providing services within hours, mean time to service implementation was 27 days (interquartile range 20-41 days). Conclusions: Integration of disaster teleconsultation systems into state and local emergency management plans are needed to bring administrative start-up times in line with technical readiness.
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  • 文章类型: Case Reports
    与疫苗接种相关的肩部损伤(SIRVA)经常被报道为COVID-19疫苗接种后的不良事件。多项研究报道了各种损伤,包括肩峰下滑囊炎,肩袖撕裂,神经损伤,最常见的是,粘连性囊炎.粘连性囊炎被定义为以疼痛和僵硬为特征的关节囊的炎性疾病。在这里,我们介绍了一个38岁女性的案例,已知患有不受控制的糖尿病卫星和哮喘,在上肢骨科诊所就诊,抱怨在接种COVID-19疫苗后有6个月的左肩疼痛史和活动范围受限。临床检查和放射学研究与粘连性囊炎一致,患者随后被转介接受强化康复计划,以提供足够的反应.总之,SIRVA的主要病因归因于次优注射技术,标准化的定义,实施安全疫苗注射方案,和SIRVA的进一步教育和认识是必要的,以使更好的理解和预防医疗保健从业人员。
    Shoulder injury related to vaccine administration (SIRVA) has been frequently reported adverse event following COVID-19 vaccination. Multiple studies have reported various injuries including subacromial bursitis, rotator cuff tears, nerve injury, and most commonly, adhesive capsulitis. Adhesive capsulitis is defined as an inflammatory disease of the joint capsule characterized by pain and stiffness. Herein, we present a case of a 38-year-old female, known to have uncontrolled diabetes mellites and asthma, presented to upper extremity orthopedic clinic complaining of 6 months history of left shoulder pain and limited range of motion following COVID-19 vaccination administration. Clinical examination and radiological studies were consistent with adhesive capsulitis, the patient was then referred for intensive rehabilitation program that provided adequate response. In conclusion, the main etiology of SIRVA has been attributed to suboptimal injection technique, a standardized definition, implementation of safe vaccines injection protocols, and further education and awareness of SIRVA is needed to healthcare practitioners to allow better understanding and prevention.
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  • 文章类型: Review
    随着全球公共债务达到创纪录水平,各国政府在提供基本卫生服务方面面临前所未有的挑战。这项探索性研究旨在评估健康影响债券(HIB)作为在财政紧缩时期和COVID大流行之后为预防性卫生服务提供资金的一种手段的相关性。这项研究借鉴了关于HIB的文献综述,以及在英国实施的HIB的案例研究分析。研究结果表明,尽管HIB有望在财政紧缩的情况下成为预防性卫生服务的创新筹资工具,某些挑战限制了它们的更广泛采用。
    With global public debt at record levels, governments are facing unprecedented challenges in providing essential health services. This exploratory study aims to assess the relevance of Health Impact Bonds (HIBs) as a means of financing preventative health services during times of fiscal constraint and in the aftermath of the COVID pandemic. The study draws on a review of the literature on HIBs, along with a case study analysis of HIBs implemented in the UK. The findings of the study indicate that, although HIBs offer promise as an innovative funding tool for preventative health services in tight fiscal situations, certain challenges are limiting their broader adoption.
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  • 文章类型: Journal Article
    运动员容易受到急性呼吸道感染,包括SARS-CoV-2,它可以影响心血管功能。我们旨在评估COVID-19感染和隔离对男女大学运动员心功能的影响。
    我们进行了单中心,prospective,病例对照研究,并在10-14天隔离后对一组恢复期SARS-CoV-2阳性运动员进行了经胸超声心动图检查,与非SARS-CoV-2运动员相匹配。数据收集时间为2020年8月1日至2021年5月31日。
    我们评估了61名SARS-CoV-2阳性运动员(20±1年,39%为女性)和61名对照(年龄20±2岁,39%女性)。SARS-CoV-2阳性运动员在感染诊断后平均40±38天进行超声心动图检查。所有SARS-CoV-2阳性运动员均具有临床上正常的左心室收缩功能(LVEF>50%)。然而,与对照组相比,SARS-CoV-2阳性运动员的LVEF略有降低(65±6%vs.72±8%,分别,p<0.001),当分别对女性和男性运动员进行评估时,这仍然很重要。子分析显示,只有在平均感染27天内出现成像时,这些差异才会出现。恢复期较长(≥27天),无差异。与男性对照组相比,SARS-CoV-2阳性的男性运动员表现出更高的左心室舒张末期容积和二尖瓣充盈速度。
    我们的研究揭示了与对照组相比,在SARS-CoV-2感染和隔离后,大学运动员独特的性别特异性心脏变化。尽管LVEF略有降低,仅在感染后的第一周观察到,未观察到有临床意义的心脏异常.需要进一步研究以了解LVEF的变化是直接归因于感染还是间接地通过隔离导致的运动限制。
    Athletes are susceptible to acute respiratory tract infections, including SARS-CoV-2, which can affect cardiovascular function. We aimed to evaluate the impact of COVID-19 infection and quarantine on cardiac function in male and female collegiate athletes.
    We conducted a single-center, prospective, case-control study and performed transthoracic echocardiography in a diverse group of convalescent SARS-CoV-2-positive athletes following a 10-14-day quarantine, matched to non-SARS-CoV-2 athletes. Data collection occurred from August 1, 2020, to May 31, 2021.
    We evaluated 61 SARS-CoV-2-positive athletes (20 ± 1 years, 39% female) and 61 controls (age 20 ± 2 years, 39% female). Echocardiography in SARS-CoV-2-positive athletes was performed on average 40 ± 38 days after infection diagnosis. All SARS-CoV-2-positive athletes had clinically normal systolic left ventricular function (LVEF > 50%). However, SARS-CoV-2-positive athletes exhibited mildly lower LVEF compared to controls (65 ± 6% vs. 72 ± 8%, respectively, p < 0.001), which remained significant when evaluated separately for female and male athletes. Sub-analysis revealed these differences occurred only when imaging occurred within a mean average of 27 days of infection, with a longer recovery period (≥27 days) resulting in no differences. SARS-CoV-2-positive male athletes exhibited higher left ventricular end-diastolic volume and mitral filling velocities compared to male controls.
    Our study reveals unique sex-specific cardiac changes in collegiate athletes following SARS-CoV-2 infection and quarantine compared to controls. Despite a mild reduction in LVEF, which was only observed in the first weeks following infection, no clinically significant cardiac abnormalities were observed. Further research is required to understand if the changes in LVEF are directly attributed to the infection or indirectly through exercise restrictions resulting from quarantine.
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