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Impact of Body Mass Index on the Clinical Outcomes after Percutaneous Coronary Intervention in Patients ≥75 Years Old

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Chinese Medical Journal 2015年第5期128卷 638-643页

作者： Pei-Yuan He Yue-Jin Yang Shu-Bin Qiao Bo Xu Min Yao yong-jian wu Yuan wu Jin-Qing Yuan Jue Chen Hai-Bo Liu Jun Dai Wei Li Yi-Da Tang Jin-Gang Yang Run-Lin Gao Department of Cardiology Cardiovascular Institute and Fuwai Hospital National Center for Cardiovascular Diseases Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100037 China Medical Research and Biometrics Center Cardiovascular Institute and Fuwai Hospital National Center for Cardiovascular Diseases Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100037 China

Background：The impact of body mass index （BMI） on the clinical outcomes after percutaneous coronary intervention （PCI） in patients ≥75 years old remained ***：A total of 1098 elderly patients undergoing PCI with stent implantation were *** were divided into four groups by the value of BMI：Underweight （〈20.0 kg/m^2）,normal weight （20.0-24.9 kg/m^2）,overweight （25.0-29.9 kg/m^2） and obese （≥30.0 kg/m^2）.Major clinical outcomes after PCI were compared between the *** primary endpoint was defined as in-hospital major adverse cardiovascular events （MACEs）,which included death,myocardial infarction （MI） and target vessel *** secondary endpoint was defined as 1 year *** regression analysis was performed to adjust for the potential ***：Totally,1077 elderly patients with available BMIs were included in the *** of underweight,normal weight,overweight and obese accounted for 5.6%,45.4%,41.5% and 7.5% of the population,*** patients were more likely to attract ST-segment elevation MI,and get accompanied with anemia or renal ***,they were less likely to achieve thrombolysis in MI 3 grade flow after PCI,and receive beta-blocker,angiotensin converting enzyme inhibitor or angiotensin receptor blocker after *** underweight,normal weight,overweight and obese patients,in-hospital MACE were 1.7%,2.7%,3.8%,and 3.7% respectively （P =0.68）,and 1 year mortality rates were 5.0%,3.9%,5.1% and 3.7% （P =0.80）,without significant difference between the *** regression analysis showed that the value of BMI was not associated with in-hospital MACE in patients at 75 years ***：The BMI ＂obese paradox＂ was not found in patients ≥75 years *** was suggested that BMI may not be a sensitive predictor of adverse cardiovascular events in elderly patients.

关键词： Aged Angioplasty Body Mass Index Outcomes

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Long-term follow-up of crush versus no crush technique for coronary artery bifurcation lesions

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Chinese Medical Journal 2009年第6期122卷 627-631页

作者： GAO Zhan YANG Yue-jin XU Bo CHEN Ji-lin QIAO Shu-bin LI jian-jun QIN Xue-wen YAO Min wu yong-jian YUAN Jin-qing CHEN Jue LIU Hai-bo DAI Jun GAO Run-lin Department of Cardiology Cardiovascular Institute & Fu Wai Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing 100037 China

Background Lesions at coronary bifurcations always are a big challenge for interventionists even with the advent of drug eluting stents （DES）. Even as more clinical trials are published, operators still can not confirm that one strategy is more efficient than another. Selection of patients and short term follow-up contribute to the difficulty in comparing strategies. Methods From April 2004 to April 2008, 505 consecutive Chinese patients underwent DES implantation for true bifurcation lesions; including 258 using crush strategy （213 male, （56.7＋10.8） years old） and 247 using no crush strategy （206 male, （58.1＋10.1） years old） were analyzed. Results The follow-up period ranged from 237 to 1223 days, average （537＋340） days for the crush group and （538＋351） days for the no crush group. There was no significant difference of major adverse cardiac events （MACE） rate between the two groups （10.1% vs 12.1%; P=-0.481）, nor in cardiac death, nonfatal myocardial infarction （MI） or in the target vessel revascularization （TVR）（0.4% vs 1.6%; P=0.207, 2.7% vs 2.8; P=1.000 and 7.0% vs 7.7%; P=0.865）. The stent thrombosis rate was similar in the two groups （1.6% vs 2.0%; P=0.409）, late and very late stent thrombosis in both groups were very low （0.4% vs 0.4%; P=-1.000）. Seven-month angiographic follow-up showed no significant difference of the restenosis rate between the two groups （11.0% vs 13.5%; P=0.786）. During the follow-up, cardiac death, nonfatal MI, TVR and ST free survival rate showed no significant difference between the two groups. The only variant identified as a predictor of MACE was percutaneous coronary intervention （PCI） in the first two years, which accounted for 47% of patients of all cases in four years. Conclusion Crush technique showed similar long-term clinical effect compared with other two DES techniques for coronary bifurcation lesions, the surgeons＇ skills are very important for reducing clinical events.

关键词： percutaneous coronary intervention drug eluting stent bifurcation

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Mis-estimation of coronary lesions and rectification by SYNTAX score feedback for coronary revascularization appropriateness

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Chinese Medical Journal 2020年第11期133卷 1276-1284页

作者： Shen Lin Heng Zhang Si-Peng Chen Chen-Fei Rao Fan wu Fa-Jun Zhou Yun Wang Hong-Bing Yan Ke-Fei Dou yong-jian wu Yi-Da Tang Li-Hua Xie Chang-Dong Guan Bo Xu Zhe Zheng National Clinical Research Center of Cardiovascular Diseases State Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100032China Department of Cardiovascular Surgery Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100032China Department of Information Center Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100032China Department of Cardiology Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100032China Department of Biostatistics Harvard T.H.Chan School of Public HealthBostonMAUSA Center for Outcomes Research and Evaluation Yale-New Haven HealthNew HavenCTUSA.

Background::Imprecise interpretation of coronary angiograms was reported and resulted in inappropriate *** Between Percutaneous Coronary Intervention with Taxus and Cardiac Surgery(SYNTAX)score is a comprehensive system to evaluate the complexity of the overall *** hypothesized that a real-time SYNTAX score feedback from image analysts may rectify the mis-estimation and improve revascularization appropriateness in patients with stable coronary artery disease(CAD).Methods::In this single-center,historical control study,patients with stable CAD with coronary lesion stenosis≥50%were consecutively *** the control period,SYNTAX scores were calculated by treating *** the intervention period,SYNTAX scores were calculated by image analysts immediately after coronary angiography and were provided to cardiologists in real-time to aid *** primary outcome was revascularization deemed inappropriate by Chinese appropriate use criteria for coronary ***::A total of 3245 patients were enrolled and assigned to the control group(08/2016-03/2017,n=1525)or the intervention group(03/2017-09/2017,n=1720).For SYNTAX score tertiles,17.9%patients were overestimated and 4.3%were underestimated by cardiologists in the control *** adjustment,inappropriate revascularization significantly decreased in the intervention group compared with the control group(adjusted odds ratio[OR]:0.83;95%confidence interval[CI]:0.73-0.95;P=0.007).Both inappropriate percutaneous coronary intervention(adjusted OR:0.82;95%CI:0.74-0.92;P<0.001)and percutaneous coronary intervention utilization(adjusted OR:0.88;95%CI:0.79-0.98;P=0.016)decreased significantly in the intervention *** was no significant difference in 1-year adverse cardiac events between the control group and the intervention ***::Real-time SYNTAX score feedback significantly reduced inappropriate coronary revascularization in sta

关键词： Real-time SYNTAX score Coronary revascularization Appropriate use criteria Quality improvement

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Empirical likelihood for spatial cross-sectional data models with matrix exponential spatial specification

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Applied Mathematics(A Journal of Chinese Universities) 2024年第1期39卷 125-139页

作者： LIU Yan RONG jian-rong QIN yong-song Nanning University Nanning 530200China Center for Applied Mathematics of Guangxi and College of Mathematics and Statistics Guangxi Normal UniversityGuilin 541004China

In this paper,we study spatial cross-sectional data models in the form of matrix exponential spatial specification(MESS),where MESS appears in both dependent and error *** empirical likelihood(EL)ratio statistics are established for the parameters of the MESS *** is shown that the limiting distributions of EL ratio statistics follow chi-square distributions,which are used to construct the confidence regions of model *** experiments are conducted to compare the performances of confidence regions based on EL method and normal approximation method.

关键词： MESS empirical likelihood con dence region

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Variability Analysis for a Two-station Queueing Network in Heavy Traffic with Arrival Processes Driven by Queues

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Acta Mathematicae Applicatae Sinica 2024年第2期40卷 445-466页

作者： jian CAO yong-jiang GUO Kai-ming YANG School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China

The law of the iterated logarithm(LIL)for the performance measures of a two-station queueing network with arrivals modulated by independent queues is developed by a strong approximation *** convenience,two arrival processes modulated by queues comprise the external system,all others are belong to the internal *** is well known that the exogenous arrival has a great influence on the asymptotic variability of performance measures in *** the considered queueing network in heavy traffic,we get all the LILs for the queue length,workload,busy time,idle time and departure processes,and present them by some simple functions of the primitive *** LILs tell us some interesting insights,such as,the LILs of busy and idle times are zero and they reflect a small variability around their fluid approximations,the LIL of departure has nothing to do with the arrival process,both of the two phenomena well explain the service station’s situation of being busy all the *** external system shows us a distinguishing effect on the performance measures:an underloaded(overloaded,critically loaded)external system affects the internal system through its arrival(departure,arrival and departure together).In addition,we also get the strong approximation of the network as an auxiliary result.

关键词： two-station queueing network the law of the iterated logarithm(LIL) strong approximation fluid approximation

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Random Raman Fiber Laser as a Liquid Refractive Index Sensor

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Photonic Sensors 2024年第1期14卷 13-22页

作者： Bing HAN Yuxi MA Han wu yong ZHAO College of Information Science and Engineering Northeastern UniversityShenyang 110819China Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology Qinhuangdao 066004China College of Electronics and Information Engineering Sichuan UniversityChengdu 610064China

In this paper,a new concept of forward-pumped random Raman fiber laser(RRFL)-based liquid refractive index sensing is proposed for the first *** liquid refractive index sensing,the flat fiber end immersed in the liquid can act as the point reflector for generating random fiber lasing and also as the sensing *** to the high sensitivity of the output power of the RRFL to the reflectivity provided by the point reflector in the ultralow reflectivity regime,the proposed RRFL is capable of achieving liquid refractive index sensing by measuring the random lasing output *** theoretically investigate the effects of the operating pump power and fiber length on the refractive index sensitivity for the proposed *** a proof-of-concept demonstration,we experimentally realize high-sensitivity half-open short-cavity RRFL-based liquid refractive index sensing with the maximum sensitivity and the sensing resolution of-39.88W/RIU and 2.5075×10^(-5) RIU,*** also experimentally verify that the refractive index sensitivity can be enhanced with the shorter fiber length of the *** work extends the application of the random fiber laser as a new platform for highly-sensitive refractive index sensing in chemical,biomedical,and environmental monitoring applications,etc.

关键词： Fiber optic sensors refractive index measurements fiber lasers Rayleigh scattering stimulated Raman scattering

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Polyimide covalent organic frameworks as efficient solid-state Li^(+) electrolytes

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Science China Chemistry 2024年第5期67卷 1647-1652页

作者： Xu Liu Shi Wang Siqi Liu Chengfang Liu Xiangchun Li jian wu Dazhi Li Shihao Xu Chongyang Liu Wen-yong Lai State Key Laboratory of Organic Electronics and Information Displays(SKLOEID) Institute of Advanced Materials(IAM)School of Chemistry and Life SciencesNanjing University of Posts&TelecommunicationsNanjing 210023China

Covalent organic frameworks(COFs) are attractive porous crystalline materials with extremely high stability, easy functionalization, and open channels, which are expected to be unique ion conductors/transporters in lithium ion batteries(LIBs). Despite recent advances, low ion conductivity and low transference number, resulting in low charging/discharging rate, low energy density, and short battery life, are the main issues that limit their direct application as solid electrolytes in LIBs. Here, we designed and synthesized a novel polyimide COF, namely, TAPA-PDI-COF, with abundant C=O groups, which has been successfully employed as high-performance solid electrolytes by doping TAPA-PDI-COF and succinonitrile(SN). Both the well-defined nanochannels of COFs and SN confined in the well-aligned channels restricted the free migration of anions, while C=O on COFs and CN groups of SN enhanced Li^(+) transport, thus achieving a high ion conductivity of 0.102 m S cm^(-1)at 80 °C and a high lithium-ion transference number of 0.855 at room temperature. According to density functional theory(DFT)calculations, Li-ion migration mainly adopted in-plane transport rather than the axial pathway, which may be due to the shorter hopping distances in the planar pathway. The results suggest an effective strategy for the design and development of all-solidstate ionic conductors for achieving high-performance LIBs.

关键词： lithium ion batteries(LIBs) covalent organic frameworks(COFs) solid-state ion conductors solid-state electrolytes ion conductivity

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Cooperative NHC/Photoredox Catalysis:Three-Component Reaction of Aroyl Fluorides,Styrenes and Oxalates

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Chinese Journal of Chemistry 2024年第5期42卷 511-515页

作者： Zheng Lin Guanghui Lv jianghong Liu jiangyan Tang Binsong Mu jian Chen Tianle Huang Zhongzhen Yang yong wu Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan UniversityChengduSichuan610041 China Department of Pharmacy Hubei Provincial Clinical Research Center for Umbilical Cord Blood Hematopoietic Stem CellsTaihe HospitalHubei University of MedicineShiyanHubei442000 China

Cooperative NHC/photoredox catalysis has emerged as an important research field in recent ***,this article describes the use of cesium salt derivatives of tert-alcohols as alkyl radical precursors in a three-component reaction with styrene and aromatic acyl fluorides to synthesizeα-arylalkyl aryl *** aroyl fluoride reacts with the NHC catalyst,leading to the formation of an acyl azolium *** acyl azolium ion can then be reduced by the photoredox catalyst,generating the corresponding ketyl radical *** C-radical generated from oxalate oxidation undergoes an addition reaction with the styrene derivative,followed by cross-coupling of the addition radical with the ketone radical,which is fragmented by NHC to give the target ketone.

关键词： Three-component Photoredox NHC Aryl ketones Iridium Radical C—C coupling Amides

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Modeling analysis of cobalt-based Fischer-Tropsch catalyst particles

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Chinese Journal of Chemical Engineering 2024年第6期70卷 82-92页

作者： Huashuai wu Gang Wang yong Yang yongwang Li College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China National Energy Research&Development Center for Coal to Liquid Fuels Synfuels China CompanyLimitedBeijing 101400China

The influences of particle size,shape,and catalyst distribution on the reactivity and hydrocarbon product selectivity of a cobalt-based catalyst for Fischer-Tropsch synthesis were investigated in the present work.A self-consistent kinetic model for Fischer-Tropsch reaction proposed here was found to correlate experimental data well and hence was used to describe the consumption rates of reactants and formation rates of hydrocarbon *** perturbed-chain statistical associating fluid theory equation of state was used to describe vapor-liquid equilibrium behavior associated with Fischer-Tropsch *** interaction between intraparticle diffusion and Fischer-Tropsch reaction was investigated in *** showed that in order to avoid the adverse influence of intraparticle diffusional limitations on catalyst reactivity and product selectivity,the use of small particles is *** eggshell spherical particles are shown to keep the original catalyst reactivity and enhance the selectivity of heavy hydrocarbon *** suitable layer thickness for a spherical particle with a diameter of 2 mm is nearly 0.15 *** the same outer diameter of 2 mm,the catalyst reactivity and heavy product selectivity of hollow cylindrical particles with a layer thickness of 0.25 mm are found to be larger than eggshell spherical *** the viewpoint of catalytic performance,hollow cylindrical particles are a better choice for industrial applications.

关键词： Fischer-Tropsch synthesis Kinetic modeling Vapor-liquid equilibria Numerical simulation Intraparticle diffusion Particle shapes

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Experimental and Numerical Investigation of Non-synchronous Blade Vibration Excitation in a Transonic Axial Compressor

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Journal of Thermal Science 2024年第2期33卷 602-610页

作者： WANG Songbai wu Yadong CHEN yong CAO Zhipeng School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai200240China AECC Sichuan Gas Turbine Establishment Chengdu610500China

The complex flow phenomenon of rotating instability(RI) and its induced non-synchronous vibration(NSV) have become a significant challenge as they continuously increase aerodynamic *** study aims to provide an understanding of the non-synchronous blade vibration phenomenon caused by the rotating instability of a transonic axial compressor *** this case,blade vibrations and non-synchronous excitation are captured by strain gauges and unsteady wall pressure transducer *** numerical simulations for a full-annulus configuration are used to obtain the non-synchronous flow *** results show that the first-stage rotor blade exhibits an NSV close to the first bending mode;NSV is accompanied by a sharp increase in pressure pulsation;amplitude can reach 20%,and unsteady aerodynamic frequency will lock in a structural mode frequency when the blade vibrates in a large-amplitude *** predicted NSV frequency aligns well with the experimental *** dominant mode of circumferential instability flow structure is approximately 47% of the number blades,and the cell size occupies 2-3 pitches in the circumferential *** full-annulus unsteady simulations demonstrate that the streamwise oscillation of the shedding and reattachment vortex structure is the main cause of NSV owing to the strong interaction between the tip leakage and separation vortices near the suction surface.

关键词： non-synchronous vibration transonic axial compressor rotor blade rotating instabilities unsteady flow

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