Correlation between the Six-Minute Walk Test and Subjective Functional Class in Patients with Heart Failure

Introduction: The Six-Minute Walk Test (6MWT) is an inexpensive method to objectively evaluate physical capacity or limitation and stratify prognosis in patients with Heart Failure (HF). Since the clinical perception of symptoms may be adapted or compromised, regular evaluation from medical interviews often fails to determine functional classification. This study aimed to assess the correlation between New York Heart Association Functional Class (NYHA-FC) and the distance walked in the 6MWT. Methods: We conducted a cross-sectional observational study that included patients with HF with reduced ejection fraction followed up at an outpatient service of a teaching hospital, from August 2018 to April 2019. Patients in NYHA-FC I, II, or III were included. We compared NYHA-FC subjectively obtained during the consultation with the 6MWT performed after medical consultation, and the correlation between these two parameters was assessed. Results: The study included 70 patients with HF, 41 (58.6%) of whom were female. The mean age was 61.2 ± 12.7 years. The most prevalent etiologies were dilated idiopathic cardiomyopathy (35.7%) followed by ischemic cardiomyopathy (25.7%). The mean ejection fraction was 34.1% ± 9.8%. The average distance walked in the 6MWT by NYHA-FC I patients was 437.8 ± 95.8 meters, NYHA-FC II 360.1 ± 96.4, and NYHA-FC III 248.4 ± 98.3. Functional class measured by the 6MWT was different than that estimated by NYHA-FC in 34 patients (48.6%), 23 (32.9%) for a higher functional class and 11 (15.7%) for a lower one (p = 0.07). Pearson’s correlation coefficient between NYHA-FC and the 6MWT was -0.55. Conclusion: There was a moderate correlation between the subjective NYHA-FC and the 6MWT. The 6MWT revealed a different classification from NYHA-FC in almost half of the patients. Among those who presented discrepancies between methods, 6MWT reclassification towards a higher functional class was more common.

RELATIVE WIDTH OF SMOOTH CLASSES OF MULTIVARIATE PERIODIC FUNCTIONS WITH RESTRICTIONS ON ITERATED LAPLACE DERIVATIVES IN THE L_2-METRIC

For two subsets W and V of a Banach space X, let Kn（W, V, X） denote the relative Kolmogorov n-width of W relative to V defined by Kn（W,V,X）：=inf sup inf/Ln f∈W g∈V∩Ln‖f-g‖x, where the infimum is taken over all n-dimensional linear subspaces Ln of X. Let W2（△^τ） denote the class of 2π-periodic functions f with d-variables satisfying ∫[-π, π]^d｜△^τf（x）｜^2dx≤1, while △^τ is the r-iterate of Laplace operator △. This article discusses the relative Kolmogorov n-width of W2（△^τ） relative to W2（△^τ） in Lq（[-π, π]^d） （1≤ q ≤ ∞）, and obtain its weak asymptotic result.

Muntz Rational Approximation for Special Function Classes in Orlicz Spaces

Using the method of construction, with the help of inequalities, we research the Muntz rational approximation of two kinds of special function classes, and give the corresponding estimates of approximation rates of these classes under widely con- ditions. Because of the Orlicz Spaces is bigger than continuous function space and the Lp space, so the results of this paper has a certain expansion significance.

HAAR EXPANSIONS OF A CLASS OF FRACTAL INTERPOLATION FUNCTIONS AND THEIR LOGICAL DERIVATIVES

In this paper,we study a special class of fractal interpolation functions,and give their Haar-wavelet expansions.On the basis of the expansions,we investigate the H(o|¨)lder smoothness of such functions and their logical derivatives of order α.

CONVERGENCE OF A CLASS OF MEANS OF H^p FUNCTIONS(0

In this paper we study the convergence nf a class of means on H^p(G)(0<p<1),the means take the Bochner-Riesz means in[1],the generalized Bochner-Riesz means in[2],and the operators T^(Φ_r)in[3]as special cases.We obtain weak-type estimates for the associated maximal operators and the maximal mean boundedness for the means.

MNTZ RATIONAL APPROXIMATION FOR SPECIAL FUNCTION CLASSES IN Ba[0,1] SPACES

In this paper, we research the Miintz rational approximation of two kinds of spe- cial function classes, and give the corresponding estimates of approximation rates of these classes.

On the Symmetry Classes of Functions

Let R be an integral domain of characteristic zero such that the corresponding group rings have block decompositions. We first prove that the submodule consisting of all the R-valued ξi-symmetric functions of several variables is a symmetry class, where ξi is any block character. Then we present a relationship among certain operators introduced for block character. Then we present a relationship among certain operators introduced for block characters. As a consequence, we obtain a decomposition of an arbitrary R-valued function of several variables. Finally, we describe the symmetry property of such summands and determine all the symmetry classes.

AVERAGE σ-K WIDTH OF CONVOLUTION FUNCTION CLASS OF L_(pq) (R) IN L_q(R)

In this paper. we study the average n-K width of the convolution class B_(pq)(G)(or B_(?)(G)), for which the kernel G(x) is a PF density, in the metric L_q(R)(or L_(qp)(R)) for the case 1≤q<p ≤∞, and obtain some exact results.

Comparison of skeletal, dental and soft tissue changes in young adults with Class II malocclusion, treated either by camouflage, fixed functional appliance or orthognathic surgery—A prospective study on Indian subjects

Introduction: Borderline Class II malocclusion due to deficient mandible can be treated either by orthodontic camouflage, fixed functional appliances or by orthodontics followed by surgical mandibular advancement. Methodology: A prospective study was designed on young adults with Class II malocclusion on account of a deficient mandible. A total of 45 subjects were divided into three groups of 15 individuals each. The patients were treated either by camouflage, fixed functional appliances or by orthognathic surgery. Pre and post treatment cephalograms were used to assess the skeletal, dental and soft tissue changes. Pre and post treatment profile photographs were assessed on a Visual Analogue Scale (VAS) by orthodontists, oral surgeons and laypersons. Results: Each group achieved a reduction in facial convexity, but the results obtained from the surgical group were more pronounced than the camouflage and the fixed functional group. Conclusion: The reduction in convexity in the camouflage group was by retracting the upper anteriors, which increases the nasolabial angle. In the fixed functional appliance a combination of skeletal and dentoalveolar changes can be observed. However the most appropriate reduction in profile convexity can be obtained by combined orthodontic and surgical treatment of malocclusion.

APPROXIMATION BY FABER-LAURENT RATIONAL FUNCTIONS IN THE MEAN OF FUNCTIONS OF CLASS LP(T) WITH 1

Let Γ be a regular curve and Lp (Γ), 1<p<+∞. be the class of all complex - valued functions f de-fined on Γ which are such that |f|p is mtegrabie in sense of Lebesgue. In this work, we define the k th p-Fabcrpolynomial F k,p (z),the kth p-Faber principle part F k.p (1/z) for Γ , and defined the nth p-Fcber- Laurent rational function Rn.p (f, z) and p- generalized modulus of continuity Ωp(f, t) of a function f of Lp(Γ) We inves-tigate some properties of Fk,p (z) and Fk.p (1/z). And then we prove a direct theorem characterizing the degree of approximation with respect to Ω (. , t) in the mean of functions of Lp(Γ) by the rational junctions Rn.p (. . z).

Basic Functions for Computational Implementation of the Box-Cox Symmetric Class of Distributions

A class of distributions called Box-Cox symmetric was proposed for random variables with asymmetric distributions. This class allows through its structure an interpretation of the parameters in terms of quantiles (in particular, the median), relative dispersion and skewness. This study presents the initial results of the computational development of basic functions of each of the distributions that make up the Box-Cox symmetric class. Four functions have been developed to compose a routine in software R up to now. These functions are related to random numbers generation, probability density function, cumulative distribution function, and quantile function associated to a given probability. Examples of implemented functions were presented. The gamlss routine was used to check the performance of developed functions.

GENERALIZED FRACTIONAL CALCULUS OF THE ALEPH-FUNCTION INVOLVING A GENERAL CLASS OF POLYNOMIALS

The object of this article is to study and develop the generalized fractional calcu- lus operators given by Saigo and Maeda in 1996. We establish generalized fractional calculus formulas involving the product of R-function, Appell function F3 and a general class of poly- nomials. The results obtained provide unification and extension of the results given by Saxena et al. [13], Srivastava and Grag [17], Srivastava et al. [20], and etc. The results are obtained in compact form and are useful in preparing some tables of operators of fractional calculus. On account of the general nature of the Saigo-Maeda operators, R-function, and a general class of polynomials a large number of new and known results involving Saigo fractional calculus operators and several special functions notably H-function, /-function, Mittag-Leffier function, generalized Wright hypergeometric function, generalized Bessel-Maitland function follow as special cases of our main findings.

两类双单叶Bazilevic函数类的Fekete-Szegö不等式

在两类双单叶Bazilevic函数类的引入应用下,采用分析技巧研究Fekete-Szegö不等式.在完成f(x)∈M^(uλ)_(Σ)(ϕ)、f(x)∈H_(Σ)(u,λ,k)两类双单叶定义定理分析后探讨推论结果,所获取的第三项系数估计实现了对部分双单叶函数已有结果的改进.

“双一流”视域下大学文化建设实践进路研究

“双一流”建设是新时代党中央、国务院为促进高等教育内涵式发展、提升高等教育质量、增强国家核心竞争力、建设教育强国做出的重大国家战略安排。传承创新优秀文化作为“双一流”建设五大建设任务之一,已经明确纳入“双一流”建设大格局,彰显大学所肩负的文化使命。文章以“双一流”建设所涵盖的重要维度为观察视角,在深刻把握大学文化建设发展规律的基础上,分析大学文化与大学功能之间的交互作用机理,进而从实践层面开展应用对策研究,旨在更好地推动中国特色大学文化创新发展,为深入推进新一轮“双一流”建设、加快建设教育强国、文化强国提供参考和建议。

Class Ⅲ过氧化物酶在植物中的作用及其研究进展

过氧化物酶广泛存在于各种有机体中,根据其结构和功能可分为不同的类型,其中ClassⅢ过氧化物酶是植物体内特有的一个多基因家族.ClassⅢ过氧化物酶的功能多样,能够参与生长素的代谢、细胞壁的延伸和加厚、活性氧和活性氮的代谢以及植物的抗病作用等各种生理活动.目前对ClassⅢ过氧化物酶的940个物种中的6 000条序列都已经进行了注释,包括其存在的物种、组织类型以及细胞中的定位等.该文对国内外近年来有关ClassⅢ过氧化物酶的结构特征及其在植物体内的功能等进行综述.

急性胰腺炎患者血清CXC趋化因子配体10和CC类趋化因子22水平与疾病严重程度关系及临床诊断价值研究

目的:分析急性胰腺炎患者血清CXC趋化因子配体10(CXCL10)和CC类趋化因子22(CCL22)水平与疾病严重程度的关系及临床诊断价值。方法:选取急性胰腺炎患者102例,分为轻症组(轻症急性胰腺炎患者,47例)、中度重症组(中度重症急性胰腺炎患者,31例)和重症组(重症急性胰腺炎患者,24例)。选择52例体检健康者为健康组。采用全自动生化分析仪检测受试者肝功能指标[丙氨酸氨基转移酶(ALT)、天冬氨酸氨基转移酶(AST)]、肾功能指标[肌酐(Scr)、血尿素氮(BUN)]以及淀粉酶(AMY)水平。采用酶联免疫吸附法检测血清中CXCL10、CCL22水平。采用急性胰腺炎严重程度床边指数(BISAP)评分评估急性胰腺炎患者疾病严重程度。采用Logistic回归分析中度重症和重症急性胰腺炎发生的影响因素。采用Pearson法分析急性胰腺炎患者血清CXCL10、CCL22水平及BISAP评分间的相关性。采用受试者工作特征(ROC)曲线评价血清CXCL10、CCL22水平诊断中度重症和重症急性胰腺炎的价值。结果:与健康组比较,轻症组ALT、Scr、BUN、AMY水平升高,中度重症组和重症组ALT、AST、Scr、BUN、AMY水平升高(均P<0.05)。与轻症组比较,中度重症组BUN水平升高,重症组ALT、AST、Scr、BUN水平升高(均P<0.05)。与中度重症组比较,重症组BUN水平升高(P<0.05)。四组血清CXCL10、CCL22水平及BISAP评分依次升高(均P<0.05)。急性胰腺炎患者血清CXCL10和CCL22水平呈正相关(P<0.05);血清CXCL10、CCL22水平与BISAP评分呈正相关(均P<0.05)。血清CXCL10、CCL22、BISAP评分是中度重症和重症急性胰腺炎发生的独立危险因素(均P<0.05)。血清CXCL10、CCL22对中度重症和重症急性胰腺炎均有一定诊断价值,且两项联合诊断价值更高(均P<0.05)。结论:急性胰腺炎患者血清CXCL10、CCL22水平呈高表达,且随疾病严重程度的加重而升高,两者联合诊断中度重症和重症急性胰腺炎的价值较高。

青少年骨性Ⅱ类错合畸形患者功能矫治前后3D面相变化的研究

目的 利用3D诊断技术对青少年骨性Ⅱ类患者面部软组织进行三维重建,分析治疗前后患者面部软组织变化。方法收集20例青少年骨性Ⅱ类下颌后缩的患者,采用功能矫治器导下颌向前促进下颌骨发育,纠正上下颌骨发育不调,每位患者治疗前后均采用3D相机获取患者面相资料,对比分析治疗前后患者软组织三维方向变化情况。结果 SNA,SNB,L1-MP增大,ANB,U1-SN减小,上唇厚度,下唇厚度,Pog-零子午线距离减小,口裂-颏下距,鼻唇角,唇齿角增大,差异均有统计学意义(P<0.05)。结论 青少年骨性Ⅱ类错合畸形患者功能矫治前后3D面相唇部厚度减小,凸度改善,颏部前伸,软组织侧貌更加协调美观。

急性白血病患儿行为特征的潜在类别分析及影响因素

目的:利用潜在类别分析法探讨急性白血病患儿行为特征的潜在类别及影响因素,为制定白血病患儿行为问题精准干预策略提出循证依据。方法:便利抽样法选取重庆医科大学附属儿童医院血液科202例急性白血病患儿及其照顾者为研究对象,使用一般资料调查表、Rutter儿童行为问卷、一般家庭功能分量表、社会支持评定量表对其进行调查。利用潜在类别分析对急性白血病患儿行为特征进行分类,采用无序多分类logistic回归分析各因素对不同类别的影响。结果:急性白血病患儿行为特征可分为3种类型,其中冲动-不友善型占50%,情绪-躯体障碍型占33.66%,良好行为型占16.34%;无序多分类logistic回归结果显示,不健康的家庭功能、男性患儿易发展为冲动-不友善型,不健康的家庭功能、男性患儿、治疗期易发展为情绪-躯体障碍型,治疗期患儿易发展为情绪-躯体障碍型。结论:急性白血病患儿行为特征存在明显不同的分类特征,与家庭功能、性别、疾病阶段关系密切。因此应针对不同类别特征的急性白血病患儿制定个性化干预措施,预防或减少其行为问题的发生,进而提升其社会适应能力及生存质量。

基于蓝墨云班课的功能性训练混合式“金课”教学模式设计研究

该文运用文献资料法、逻辑分析法,在“互联网+”赋能发展的时代背景下,积极探索“金课”课程教学模式。基于蓝墨云班课教学平台的优势,依托蓝墨云班课软件,结合教学环境、教师活动、学生活动三大板块,对课前、课中、课后3个阶段进行深入研究,以精心设计功能性训练混合式“金课”教学模式,旨在最大化改善课堂教学效果,从而全面提升课程教学质量水平。

固定矫治器联合肌功能锻炼对安氏Ⅱ类畸形患者咬合功能及口腔健康的影响分析

目的探析固定矫治器与肌功能锻炼治疗安氏II类畸形患者,对其口腔健康、咬合功能的作用影响。方法项目起止时间2022年10月至2023年10月,研究对象选择在我院口腔科通过固定矫治器与肌功能联合治疗的92例安氏Ⅱ类畸形患者,对比治疗前、后患者口腔健康、咬合功能、硬/软组织改善程度等情况。结果治疗后患者咬合功能MMCOF(指力中点最大位移)、AOF(指力不对称指数)、COF(指力中心点位置)等指标较治疗前明显降低(P<0.05);而TOF(指力总值)较治疗前明显提升(P<0.05)。治疗后,患者口腔美观度、咀嚼功能、舒适度以及固定性等口腔功能明显优于治疗前(P<0.05)。与治疗前相比,治疗后患者的ANB角(指上下齿槽座)、SNA角(指上齿槽座)、UI-NA(指上切牙倾斜度)、OB(指覆盖)、OJ(指覆颌)等指标水平明显降低(P<0.05);而LI-NB(指下切牙倾斜度)、LI-MP(指下中切牙与下颌平面夹角)、SNB(指下齿槽座角)等指标水平明显提高(P<0.05)。结论固定矫治器与肌功能锻炼联合治疗安氏II类畸形患者,可明显改善患者咬合功能、硬组织,对其口腔健康具有积极的影响。