MI

家族性地中海热,常染色体显性
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  • 文章类型: Editorial
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  • 文章类型: Journal Article
    多变量模式分析(MVPA)在解释大脑活动方面发挥了广泛的作用,已应用于功能磁共振成像(fMRI)等模态研究中,脑磁图(MEG)和脑电图(EEG)。基于光泵浦磁力计(OPM)的可穿戴MEG系统的出现,即,OP-MEG,拓宽了生物磁学在神经科学领域的应用。尽管如此,由于OP-MEG本身的独特属性,这也给时间解码分析带来了挑战。利用多模融合的解码性能的功效,如MEG-EEG,也有待阐明。在这方面,我们调查了几个因素的影响,如处理方法,模型和模式,关于OP-MEG的解码结果。我们的研究结果表明,平均试验的数量,降维(DR)方法,交叉验证折叠次数显著影响OP-MEG数据的解码性能。此外,解码结果因模式和融合策略而异。相比之下,解码器类型,重采样频率,滑动窗口长度发挥边际效应。此外,我们引入互信息(MI)来研究由于OP-MEG数据处理导致的信息丢失如何影响解码精度。我们的研究为使用OP-MEG进行线性解码研究提供了见解,并扩展了其在认知神经科学领域的应用。
    Multivariate pattern analysis (MVPA) has played an extensive role in interpreting brain activity, which has been applied in studies with modalities such as functional Magnetic Resonance Imaging (fMRI), Magnetoencephalography (MEG) and Electroencephalography (EEG). The advent of wearable MEG systems based on optically pumped magnetometers (OPMs), i.e., OP-MEG, has broadened the application of bio-magnetism in the realm of neuroscience. Nonetheless, it also raises challenges in temporal decoding analysis due to the unique attributes of OP-MEG itself. The efficacy of decoding performance utilizing multimodal fusion, such as MEG-EEG, also remains to be elucidated. In this regard, we investigated the impact of several factors, such as processing methods, models and modalities, on the decoding outcomes of OP-MEG. Our findings indicate that the number of averaged trials, dimensionality reduction (DR) methods, and the number of cross-validation folds significantly affect the decoding performance of OP-MEG data. Additionally, decoding results vary across modalities and fusion strategy. In contrast, decoder type, resampling frequency, and sliding window length exert marginal effects. Furthermore, we introduced mutual information (MI) to investigate how information loss due to OP-MEG data processing affect decoding accuracy. Our study offers insights for linear decoding research using OP-MEG and expand its application in the fields of cognitive neuroscience.
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  • 文章类型: Journal Article
    简介世界卫生组织已提请注意冠状动脉疾病(CAD)是我们现代的流行病。\"如今,由于心脏缺乏氧气供应,睡眠中的猝死变得普遍。与发达国家的任何其他疾病相比,CAD导致更多的死亡和残疾,并产生更大的经济成本。在印度,心血管疾病和心脏病的患病率正在上升。高血压是所有心血管疾病的主要危险因素之一。这项研究旨在比较经皮冠状动脉介入治疗(PCI)前后的血压变异性。在稳定和不稳定的CAD患者中使用动态血压监测(ABPM)。材料和方法这项前瞻性观察研究在52例稳定和不稳定的CAD患者中进行。被医学部录取,在三级医院需要PCI。在PCI之前和之后,口服相同的抗高血压药物。在PCI前和PCI后一天进行ABPM。使用mobil-o-graph(IEM,德国)。使用HMSClient-Server4.0系统(InformerTechnologies,Inc.,洛杉矶,美国)。使用SPSSStatistics21.0版软件(IBMCorp.2012年发布IBMSPSSStatisticsforWindows,版本21.0。Armonk,纽约:IBM公司).结果52例患者中,28例(53.8%)有稳定的CAD,24例(46.2%)有不稳定的CAD。稳定型和不稳定型CAD患者的平均年龄分别为56.64±9.44和57.04±12.36岁,分别。大多数稳定(67.9%)和不稳定的CAD(62.5%)患者是男性。考虑了其他各种变量,比如血脂,血糖,心肌肌钙蛋白-I,和病史,包括高血压和2型糖尿病。在稳定的CAD患者中,PCI术前和术后收缩压(SBP)之间的比较未显示所有SBP测量值的显著差异(p>0.05).然而,PCI后平均昼夜指数显著低于PCI前(p=0.019).在不稳定的CAD患者中,PCI术前和术后SBP之间的比较显示白天峰值的显着变化,平均白天,和昼夜指数(p<0.05)。对于所有其他SBP测量,PCI术前和术后测量值之间的差异无统计学意义(p>0.05).在稳定型CAD患者中,PCI术后的舒张压(DBP)在白天的峰值观察到有统计学意义的变化,夜间高峰,和平均夜间值。相比之下,对于不稳定的CAD患者,观察到PCI术后DBP在白天的峰值有统计学意义的变化,夜间高峰,和最小白天值(p<0.05)。统计上,PCI术后,两组SBP和DBP测量值无显著差异(p>0.05)。此外,PCI术前和术后两组的浸渍方式无显著差异.结论PCI前后ABPM的比较显示,PCI术后48小时内,动态血压指标与PCI前无统计学差异.
    Introduction The World Health Organization has drawn attention to the fact that coronary artery disease (CAD) is our modern \"epidemic.\" Nowadays, sudden death during sleep has become prevalent due to a lack of oxygen supply to the heart. CAD causes more deaths and disabilities and incurs greater economic costs than any other illness in the developed world. The prevalence of cardiovascular disorders and heart disease is on the rise in India. Hypertension is one of the leading risk factors for all cardiovascular diseases. This study aims to compare blood pressure variability before and after percutaneous coronary intervention (PCI), using ambulatory blood pressure monitoring (ABPM) in patients with stable and unstable CAD. Materials and methods This prospective observational study was conducted among 52 patients with stable and unstable CAD, admitted to the medicine department, who required PCI at a tertiary care hospital. Before and after PCI, the same antihypertensive drugs were orally administered. ABPM was performed before PCI and one day after PCI. ABPM was conducted every 30 minutes during the day and every 60 minutes during the night over a 24-hour period using a mobil-o-graph (IEM, Germany). The results of the observed parameters were analyzed using the HMS Client-Server 4.0 system (Informer Technologies, Inc., Los Angeles, USA). The collected data were analyzed using SPSS Statistics version 21.0 software (IBM Corp. Released 2012. IBM SPSS Statistics for Windows, Version 21.0. Armonk, NY: IBM Corp.). Results Out of 52 patients, 28 (53.8%) had stable CAD and 24 (46.2%) had unstable CAD. The mean age of patients with stable and unstable CAD was 56.64±9.44 and 57.04±12.36 years, respectively. The majority of patients with stable (67.9%) and unstable CAD (62.5%) were males. Various other variables were considered, such as lipid profile, blood sugar, cardiac troponin-I, and medical history, including hypertension and type 2 diabetes mellitus. Among stable CAD patients, a comparison between pre- and post-PCI systolic blood pressure (SBP) did not show a significant difference in all SBP measurements (p>0.05). However, the mean diurnal index was significantly lower following PCI compared to before PCI (p=0.019). Among unstable CAD patients, a comparison between pre- and post-PCI SBP showed a significant change in peak daytime, average daytime, and diurnal index (p<0.05). For all other SBP measurements, the difference between pre- and post-PCI measurements was not statistically significant (p>0.05). In patients with stable CAD, a statistically significant change in diastolic blood pressure (DBP) following PCI was observed for peak daytime, peak nighttime, and average nighttime values. In contrast, for patients with unstable CAD, a statistically significant change in DBP following PCI was observed for peak daytime, peak nighttime, and minimum daytime values (p<0.05). Statistically, post-PCI, there was no significant difference between the two groups for SBP and DBP measurements (p>0.05). Additionally, there was no significant difference between the two groups pre- and post-PCI in the pattern of dipping. Conclusion A comparison of the ABPM before and after PCI showed that, within 48 hours post-PCI, the ambulatory blood pressure indicators did not differ statistically from those before PCI.
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  • 文章类型: Journal Article
    背景:心肌梗死(MI)的一种众所周知的致命并发症是梗死后室间隔破裂(VSR)。这些患者与冠状动脉造影和随后的冠状动脉旁路移植术相关的益处和风险引发了争议。这项研究的目的是确定MI后血运重建的结果。
    方法:从2011年至2017年,考虑55至78岁的患者发生梗死后室间隔破裂。年龄等因素,性别,人体测量,收缩压和舒张压(SBP和DBP),和生化参数如CPK-MB,胆固醇,低密度脂蛋白,高密度脂蛋白,和甘油三酯使用标准方法测量。估计的肾小球滤过率(eGFR),衡量肾功能,也决心。此外,冠状动脉造影因素,包括心电图改变,左心室(LV)收缩功能,右心室(RV)功能,肺动脉压(PAP),VSR的近端冠状动脉病变,收缩期PAP,右心房压力(RAP),并确定死亡率。
    结果:本研究共纳入了81例因梗死后VSR接受手术治疗的患者。这些患者分为两组:幸存者(n=35)和非幸存者(N=41)。幸存者组的平均收缩压和舒张压较高(115.3±18.7vs.96.3±25.3和74.6±12.2vs.61.2±19.0,P=0.001)。2.9%的幸存者和9.8%的非幸存者进行了PCI。血管造影数据显示,17例(33%)和33例(63%)患者有单发和多发冠状动脉疾病,分别。非存活组CPK-MB水平显著高于非存活组(P<0.05)。超声心动图检查结果,包括左心室射血分数,RV射血分数,收缩期PAP,和VSR的解剖位置,幸存者和非幸存者之间没有显着差异。
    结论:基于这些发现,建议在梗死后室间隔破裂的手术修复期间避免完全血运重建,因为它不会改善结果。
    BACKGROUND: A well-known and fatal complication of myocardial infarction (MI) is post-infarction ventricular septal rupture (VSR). The benefits and risks associated with coronary angiography and subsequent coronary artery bypass grafting in these patients have sparked controversy. The aim of this study was to determine the outcome of revascularization following MI.
    METHODS: Patients aged between 55 and 78 years were considered for the post-infarction ventricular septal rupture from 2011 to 2017. Factors such as age, sex, anthropometric measurements, systolic and diastolic blood pressure (SBP and DBP), and biochemical parameters like CPK-MB, cholesterol, low-density lipoprotein, high-density lipoprotein, and triglycerides were measured using standard methods.The estimated Glomerular Filtration Rate (eGFR), a measure of kidney function, was also determined. Additionally, coronary angiographic factors including ECG changes, left ventricular (LV) systolic function, right ventricular (RV) function, Pulmonary Artery Pressure (PAP), proximal coronary lesions in VSR, systolic PAP, Right Atrial Pressure (RAP), and mortality rate were determined.
    RESULTS: The study enrolled a total of 81 patients who had been surgically treated for post-infarction VSR. These patients were divided into two groups: survivors (n=35) and non-survivors (N=41). The mean systolic and diastolic blood pressure was higher in the survivor group (115.3 ± 18.7 vs. 96.3 ± 25.3 and 74.6 ± 12.2 vs. 61.2 ± 19.0, P=0.001). PCI was performed in 2.9% of survivors and 9.8% of non-survivors. Angiographic data revealed that 17 (33%) and 33 (63%) patients had single and multiple coronary artery diseases, respectively. CPK-MB levels were significantly higher in the non-survivors group (P<0.05). Echocardiographic findings, including LV ejection fraction, RV ejection fraction, systolic PAP, and the anatomic location of VSR, did not significantly differ between survivors and non-survivors.
    CONCLUSIONS: Based on these findings, it is recommended to avoid complete revascularization during surgical repair of post-infarction ventricular septal rupture, as it would not improve the outcome.
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  • 文章类型: Journal Article
    单一生物学测量中的访视差异与认知能力下降和心血管疾病(CVD)风险升高有关。然而,访视变异性对多种生物学指标的影响未得到充分研究.我们调查了访视变异性对血压(BP)的影响,心率(HR),体重,空腹血糖,胆固醇,和甘油三酯对认知能力和心血管疾病的影响。
    BP数据,HR,体重,葡萄糖,胆固醇,在初始甘精胰岛素干预(ORIGIN)试验中,来自研究访视的甘油三酯用于估计访视变异性之间的关联,认知表现(简易精神状态检查(MMSE)评分)和CVD(非致命性中风,非致死性心肌梗死,或心血管死亡)。通过计算该测量的每个个体的访问到访问标准偏差来估计每个测量的访问到访问变化。标准差在最高季度的参与者被归类为具有高变化。参与者被分组为具有0、1、2、3或≥4个高变异测量值的参与者。使用回归和生存模型来评估MMSE和CVD的生物学测量值之间的关联,并调整混杂因素和平均测量值。
    对协变量进行调整后,BP的访视变异性更高,HR,体重,和FPG与较差的MMSE和较高的CVD风险相关。通过测量,效应大小没有很大变化。高就诊变异性的影响是累加的;与没有高就诊变异性测量的参与者相比,在≥4项测量中访视变异性高的患者的MMSE评分较差(-0.63(95%CI-0.96~-0.31).与没有参与者相比,≥4个测量值的参与者具有较高的访视变异性(风险比2.46(95%CI1.63至3.70)。
    多项测量结果中的访视差异与认知表现累积较差和心血管疾病风险较大相关。
    UNASSIGNED: Visit-to-visit variability in single biological measurements has been associated with cognitive decline and an elevated risk of cardiovascular diseases (CVD). However, the effect of visit-to-visit variability in multiple biological measures is underexplored. We investigated the effect of visit-to-visit variability in blood pressure (BP), heart rate (HR), weight, fasting plasma glucose, cholesterol, and triglycerides on cognitive performance and CVD.
    UNASSIGNED: Data on BP, HR, weight, glucose, cholesterol, and triglycerides from study visits in the Outcome Reduction with Initial Glargine Intervention (ORIGIN) trial were used to estimate the association between visit-to-visit variability, cognitive performance (Mini Mental State Examination (MMSE) score) and CVD (non-fatal stroke, non-fatal myocardial infarction, or cardiovascular death). Visit-to-visit variation for each measurement was estimated by calculating each individuals visit-to-visit standard deviation for that measurement. Participants whose standard deviation was in the highest quarter were classified as having high variation. Participants were grouped into those having 0, 1, 2, 3, or ≥ 4 high variation measurements. Regression and survival models were used to estimate the association between biological measures with MMSE and CVD with adjustment for confounders and mean measurement value.
    UNASSIGNED: After adjustment for covariates, higher visit-to-visit variability in BP, HR, weight, and FPG were associated with poorer MMSE and a higher risk of CVD. Effect sizes did not vary greatly by measurement. The effects of high visit-to-visit variability were additive; compared to participants who had no measurements with high visit-to-visit variability, those who had high visit-to-visit variability in ≥4 measurements had poorer MMSE scores (-0.63 (95 % CI -0.96 to -0·31). Participants with ≥4 measurements with high visit-to-visit variability compared to participants with none had higher risk of CVD (hazard ratio 2.46 (95 % CI 1.63 to 3.70).
    UNASSIGNED: Visit-to-visit variability in several measurements were associated with cumulatively poorer cognitive performance and a greater risk of CVD.
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  • 文章类型: Journal Article
    为了改善酒精相关性肝病(ArLD)发作患者的治疗保留,我们设计了一个混合干预(简短的动机干预+“严肃的游戏”(SG))。我们介绍了参与式设计方法和结果以及干预措施的可用性评估。
    (1)SG的设计基于两个3小时的共同创建会议的结果,其中有37名参与者(医疗保健和技术专业人员,病人,和患者亲属)。简短的面对面动机干预基于5As模型,并适应ArLD人群。(2)可用性试点研究:20名参与者(10名ArLD患者+10名医疗保健专业人员)接受了干预。应用系统可用性量表(SUS)和研究后系统可用性问卷(PSSUQ)评估SG可用性和患者满意度。每周通过电话进行半结构化访谈,以确定SG中的首选要素以及应改进的方面。
    (1)设计:游戏化Web应用程序形式的SG,包括为期六周的日常活动和经过调整的简短励志面试。(2)可用性试点研究:可用性结果对患者和医疗保健专业人员都很好(SUS中位数得分=85)。一般的可用性,SG提供的信息的质量和界面的质量在PSSUQ中得到非常积极的评价(总体中位数=2,IQR=1~2).评价最好的方面是提供反馈,隐喻的使用和视听材料的应用。设计的变化,研究后应用了响应力学和内容。
    对于近期出现ArLD和AUD的患者,增加治疗保留的干预措施的可用性和可接受性对于患者和医疗保健专业人员来说是极好的。需要进行随机对照试验来测试这种方法的有效性。
    UNASSIGNED: With the aim of improving treatment retention in patients with the onset of alcohol-related liver disease (ArLD), we designed a blended intervention (brief motivational intervention + \'serious game\' (SG)). We present the participatory design methodology and outcomes and the usability assessment of the intervention.
    UNASSIGNED: (1) The design of the SG was based on the outcomes of two 3-h co-creation sessions with 37 participants (healthcare and technology professionals, patients, and patients\' relatives). The brief face-to-face motivational intervention was based on the 5 As Model and adapted to the ArLD population. (2) Usability pilot study: 20 participants (10 ArLD patients + 10 healthcare professionals) received the intervention. System Usability Scale (SUS) and Post-Study System Usability Questionnaire (PSSUQ) were applied to assess the SG usability and patients\' satisfaction with it. Weekly semi-structured interviews on the phone were conducted to identify the preferred elements in the SG and those aspects that should be improved.
    UNASSIGNED: (1) Design: an SG in the form of a gamified web app, consisting of a daily activity for six weeks and adapted brief motivational interviewing. (2) Usability pilot study: usability results were excellent for both patients and healthcare professionals (SUS median score = 85). The general usability, the quality of the information provided by the SG and the quality of the interface were very positively rated in the PSSUQ (overall median score = 2, IQR = 1-2). The best-rated aspects were the provision of feedback, the use of metaphors and the application of audiovisual material. Changes in the design, response mechanics and content were applied after the study.
    UNASSIGNED: The usability and acceptability of an intervention for increasing retention to treatment in patients with recent onset of ArLD and AUD were excellent for patients and healthcare professionals. A randomized-controlled trial is required to test the efficacy of this approach.
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  • 文章类型: Journal Article
    使用光学泵浦磁力计的可穿戴脑磁图的应用在神经科学领域引起了广泛关注。脑电图系统可以覆盖整个头部,并反映大量神经元的整体活动。可以通过脑电图结果来验证光泵浦磁力计在检测事件相关分量中的功效。多变量模式分析能够跟踪神经认知过程随时间的演变。在本文中,我们采用了经典的中文语义一致性范式,并分别收集了脑电图和光泵浦磁力计信号。然后,我们验证了光泵浦磁力计和脑电图在使用互信息指数检测N400中的一致性。多元模式分析揭示了这两种模式的解码性能差异,这可以通过对时间泛化矩阵的动态/稳定编码分析进一步验证。探照灯分析的结果为脑磁图源水平和脑电图传感器水平的这种差异提供了神经基础。这项研究为使用可穿戴脑磁图研究大脑的编码模式开辟了一条新途径,并揭示了两种模式在反映神经元表示模式方面的敏感性差异。
    The application of wearable magnetoencephalography using optically-pumped magnetometers has drawn extensive attention in the field of neuroscience. Electroencephalogram system can cover the whole head and reflect the overall activity of a large number of neurons. The efficacy of optically-pumped magnetometer in detecting event-related components can be validated through electroencephalogram results. Multivariate pattern analysis is capable of tracking the evolution of neurocognitive processes over time. In this paper, we adopted a classical Chinese semantic congruity paradigm and separately collected electroencephalogram and optically-pumped magnetometer signals. Then, we verified the consistency of optically-pumped magnetometer and electroencephalogram in detecting N400 using mutual information index. Multivariate pattern analysis revealed the difference in decoding performance of these two modalities, which can be further validated by dynamic/stable coding analysis on the temporal generalization matrix. The results from searchlight analysis provided a neural basis for this dissimilarity at the magnetoencephalography source level and the electroencephalogram sensor level. This study opens a new avenue for investigating the brain\'s coding patterns using wearable magnetoencephalography and reveals the differences in sensitivity between the two modalities in reflecting neuron representation patterns.
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  • 文章类型: Journal Article
    本文提出了一种先进的EEG伪影去除和运动图像分类方法,该方法结合了四类迭代滤波和滤波器组公共空间模式算法以及改进的深度神经网络(DNN)分类器。该研究旨在通过解决EEG伪影和复杂运动成像任务带来的挑战来提高BCI系统的准确性和可靠性。该方法首先引入FCIF,一种新颖的去除眼部伪影的技术,利用迭代滤波和滤波器组。FCIF的数学公式允许有效的伪影缓解,从而提高脑电数据的质量。串联,介绍了FC-FBCSP算法,扩展滤波器组公共空间模式方法来处理四类运动图像分类。改进的DNN分类器增强了FC-FBCSP特征的辨别能力,优化分类过程。本文展示了一个全面的实验装置,以BCI竞赛IV数据集2a和2b的利用为特色。详细的预处理步骤,包括过滤和特征提取,以数学上的严谨性呈现。结果证明了FCIF的显着伪影去除能力以及FC-FBCSP与ModifiedDNN分类器结合的分类能力。对比分析强调了所提出的方法相对于基线方法的优越性,该方法达到了98.575%的平均精度。
    This paper presents an advanced approach for EEG artifact removal and motor imagery classification using a combination of Four Class Iterative Filtering and Filter Bank Common Spatial Pattern Algorithm with a Modified Deep Neural Network (DNN) classifier. The research aims to enhance the accuracy and reliability of BCI systems by addressing the challenges posed by EEG artifacts and complex motor imagery tasks. The methodology begins by introducing FCIF, a novel technique for ocular artifact removal, utilizing iterative filtering and filter banks. FCIF\'s mathematical formulation allows for effective artifact mitigation, thereby improving the quality of EEG data. In tandem, the FC-FBCSP algorithm is introduced, extending the Filter Bank Common Spatial Pattern approach to handle four-class motor imagery classification. The Modified DNN classifier enhances the discriminatory power of the FC-FBCSP features, optimizing the classification process. The paper showcases a comprehensive experimental setup, featuring the utilization of BCI Competition IV Dataset 2a & 2b. Detailed preprocessing steps, including filtering and feature extraction, are presented with mathematical rigor. Results demonstrate the remarkable artifact removal capabilities of FCIF and the classification prowess of FC-FBCSP combined with the Modified DNN classifier. Comparative analysis highlights the superiority of the proposed approach over baseline methods and the method achieves the mean accuracy of 98.575%.
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