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Chinese Medical Journal 2021年第19期134卷 2290-2292页

作者： yi-gang li Chang-Qi Gong Department of Cardiology Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200092China

Risk stratification for ischemic stroke is essential for patients with atrial fibrillation(AF)before the consideration of anticoagulation *** to current AF management guidelines,about 90%of AF patients should receive anticoagulation therapy,and risk of stroke death in AF patients was around 68%.It is thus of importance to precisely define the patients who are in urgent need of anticoagulation *** this context,study results from Ma et al[1]published in this issue could be helpful to precisely define the AF patients who are at real risk of *** study aims to develop an accurate and easy-to-use predictive model for the 1-year risk of thromboembolic events(TEs),including ischemic stroke and systemic embolic events,in Chinese patients with AF.

关键词： patients fibrillation atrial

Experimental Investigation on Cooling/Heating Characteristics of Ultra-Thin Micro Heat Pipe for Electric Vehicle Battery Thermal Management

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Chinese Journal of Mechanical Engineering 2018年第3期31卷 179-188页

作者： Fei-Fei liu Feng-Chong Lan Ji-Qing Chen yi-gang li School of Mechanical&Automotive Engineering Guangdong Key Laboratory of Automotive EngineeringSouth China University of Technology School of Mechatronics&Vehicle Engineering East China Jiaotong UniversityNanchang 330013China

Due to the heat pipes’ transient conduction,phase change and fluid dynamics during cooling/heating with high frequency charging/discharging of batteries,it is crucial to investigate in depth the experimental dynamic thermal characteristics in such complex heat transfer processes for more accurate thermal analysis and design of a BTMS. In this paper,the use of ultra?thin micro heat pipe(UMHP) for thermal management of a lithium?ion battery pack in EVs is explored by experiments to reveal the cooling/heating characteristics of the UMHP pack. The cooling performance is evaluated under di erent constant discharging and transient heat inputs conditions. And the heating e ciency is assessed under several sub?zero temperatures through heating films with/without UMHPs. Results show that the pro?posed UMHP BTMS with forced convection can keep the maximum temperature of the pack below 40 °C under 1 ~ 3 C discharging,and e ectively reduced the instant temperature increases and minimize the temperature fluctuation of the pack during transient federal urban driving schedule(FUDS) road conditions. Experimental data also indicate that heating films stuck on the fins of UMHPs brought about adequate high heating e ciency comparing with that stuck on the surface of cells under the same heating power,but has more convenient maintenance and less cost for the BTMS. The experimental dynamic temperature characteristics of UMHP which is found to be a high?e cient and low?energy consumption cooling/heating method for BTMSs,can be performed to guide thermal analysis and optimiza?tion of heat pipe BTMSs.

关键词： Electric vehicle lithium?ion battery Thermal management Ultra?thin micro heat pipe

Non-response to Implantable Cardioverter Defibrillator in a Post-Infarction Patient with Recurrent Ventricular Tachycardia After Catheter Ablation

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Chinese Medical Journal 2015年第3期128卷 415-416页

作者： Xiang-Fei Feng Jian Sun Jun Wang yi-gang li Department of Cardiology Xinhua Hospital Shanghai Jiaotong University School of Medicine Shanghai 200092 China

To the Editor： A 73-year-old man presented to Department of Cardiology at Xinhua Hospital, Shanghai Jiaotong University School of Medicine with a history of anterior wall myocardial infarction （MI） and multimorphic ventricular tachycardia （VT） in approximately September 2013. His VT burden became progressive increase despite treatment with percutaneous coronary intervention （PCI） and multiple antiarrhythmic medications such as beta blockers, amiodarone, magnesium sulfate, and so on.

关键词： Non-response Post-Infarction Patient

Study on pitting process of 316L stainless steel by means of staircase potential electrochemical impedance spectroscopy

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International Journal of Minerals,Metallurgy and Materials 2011年第1期18卷 48-52页

作者： Zhi-jun Jia Cui-wei Du Cheng-tao li Zou yi Xiao-gang li School of Materials Science and Technology University of science and Technology Beijing Beijing 100083 China

Pitting corrosion of 316L stainless steel in NaCl solution was investigated by means of staircase potential electrochemical impedance spectroscopy（SPEIS）.The investigation focused on the transition of stainless steel from the passive state to pitting *** on the evolution of electrical parameters of the equivalent electrical circuit,it is suggested that the most probable mechanism of pit creation is the film breaking *** result demonstrates that staircase potential electrochemical impedance spectroscopy is an effective method for the investigation of pitting corrosion.

关键词： stainless steel passivation film steel corrosion pitting electrochemical impedance spectroscopy

Does Anemia Cause QT Prolongation in Patients wit Hematologic Disorders？

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Chinese Medical Journal 2015年第24期128卷 3385-3386页

作者： Yu-Dong Fei yi-gang li William Surkis li Zhang Department of Cardiology Xinhua Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200092 China Lankenau Medical Center Lankenau Institute for Medical Research Sydney Kimmel Medical College at Thomas Jefferson University Philadelphia PA USA

To the Editor： Patients with long QT syndrome have an increased risk of torsades de pointes, ventricular fibrillation, and sudden death. It has been reported in recent studies that sickle cell disease, a specific type of anemia, is associated with acquired long QT syndrome （ALQTS）, and reduced hemoglobin （Hgb） level is correlated with a longer QT interval in these patients.

关键词： QT syndrome increased risk Hematologic Disorders

Atrial Premature Contractions Arising from the Right Atrial Appendage

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Chinese Medical Journal 2017年第17期130卷 2136-2137页

作者： Xiang-Fei Feng Jian Sun Rui Zhang yi-gang li Department of Cardiology Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine Shanghai 200092 China

To the Editor：Atrial premature contractions （APCs） or atrial tachycardia （AT） is a common form of supraventricular （SV） *** from the right atrial appendage （RAA）,it usually responds well to radiofrequency （R... 详细信息

关键词： TACHYCARDIA

Adenosine Sensitivity is Associated with Ablation Success Rate and Recurrence Rate with Nonirrigated Catheters in Patients with Ventricular Premature Contractions/Tachycardia from the Ventricular Outflow Tract

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Chinese Medical Journal 2015年第2期128卷 147-152页

作者： Xiang-FeiFeng Qun-Shan Wang Jian Sun Rui Zhang Peng-Pai Zhang Jun Wang Da-li Feng yi-gang li Department of Cardiology Xinhua Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200092 China Metropolitan Heart and Vascular Institute Minneapolis MN. USA

Background：A high ablation success rate for ventricular arrhythmia （VA） from outflow tract has been achieved,but some of them cannot be eliminated from *** investigated the association between adenosine sensitivity and ablation success/recurrence rates with a nonirrigated or an irrigated ***：According to adenosine test,all patients were divided into a sensitive group （S group） or an insensitive group （Ⅰ group）.The patients of each group were randomized into a nonirrigated catheter （NA） subgroup or an irrigated catheter （IA） subgroup with a 2∶1 ***：In S group of 122 patients （84 in NA subgroup）,the ablation success rate was similar between two subgroups （94.7% vs.90.5%,P 〉 0.05）,but in Ⅰ group of 94 patients （60 in NA subgroup）,it was higher in IA subgroup （94.1%） than that in NA subgroup （73.3%,P 〈 0.05）.The success rate using nonirrigated catheter was significantly higher in S group （90.5%） than that in Ⅰ group （73.3%,P 〈 0.01）,and the recurrence rate was lower in S group than that in Ⅰ group （1.3%,vs.13.6%,P 〈 0.05）.On the contrary,the success rate and the recurrence rate using irrigated catheter were similar between S group and 1 group （94.7%,94.1%,P 〉 0.05,vs.2.8%,6.3%,P 〉 0.05）.Conclusions：Adenosine insensitivity is associated with a lower success rate and a higher recurrence rate for VA patients undergoing nonirrigated catheter ***,irrigated catheters should be the first choice for VA ablation in adenosine insensitive patients.

关键词： Ablation Adenosine Catheter Ventricular Tachycardia Premature Ventricular Contractions

A Non-Parametric Scheme for Identifying Data Characteristic Based on Curve Similarity Matching

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IEEE/CAA Journal of Automatica Sinica 2024年第6期11卷 1424-1437页

作者： Quanbo Ge Yang Cheng Hong li Ziyi Ye yi Zhu gang Yao School of Automation Nanjing University of Information Science&TechnologyJiangsu Provincial University Key Laboratory of Big Data Analysis and Intelligent SystemsNanjing University of Information Science&Technologyand the Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET)Nanjing University of Information Science&TechnologyNanjing 210044China School of Department of Logistics Engineering Shanghai Maritime UniversityShanghai 201306China China Classification Society Nantong Office Nantong 226006China Chinese Flight Test Establishment Xi’an 710089China School of Mathematics Tsinghua UniversityBeijing 100084China School of Automation Nanjing University of Information Science&TechnologyNanjing 210044China Department of Logistics Engineering Shanghai Maritime UniversityShanghai 201306China IEEE

For accurately identifying the distribution charac-teristic of Gaussian-like noises in unmanned aerial vehicle(UAV)state estimation,this paper proposes a non-parametric scheme based on curve similarity *** the framework of the pro-posed scheme,a Parzen window(kernel density estimation,KDE)method on sliding window technology is applied for roughly esti-mating the sample probability density,a precise data probability density function(PDF)model is constructed with the least square method on K-fold cross validation,and the testing result based on evaluation method is obtained based on some data characteristic analyses of curve shape,abruptness and *** com-parison simulations with classical methods and UAV flight exper-iment shows that the proposed scheme has higher recognition accuracy than classical methods for some kinds of Gaussian-like data,which provides better reference for the design of Kalman filter(KF)in complex water environment.

关键词： Curve similarity matching Gaussian-like noise non-parametric scheme parzen window.

Value of Combining Left Atrial Diameter and Amino-terminal Pro-brain Natriuretic Peptide to the CHA2DS2-VASc Score for Predicting Stroke and Death in Patients with Sick Sinus Syndrome after Pacemaker Implantation

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Chinese Medical Journal 2017年第16期130卷 1902-1908页

作者： Bin-Feng Mo Qiu-Fen Lu Shang-Biao Lu Yu-Quan Xie Xiang-Fei Feng yi-gang li Department of Cardiology Xinhua Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200092 China

Background： The CHA2DS2-VASc score is used clinically for stroke risk stratification in patients with atrial fibrillation （AF）. We sought to investigate whether the CHA2DS2-VASc score predicts stroke and death in Chinese patients with sick sinus syndrome （SSS） after pacemaker implantation and to evaluate whether the predictive power of the CHA2DS2-VASc score could be improved by combining it with left atrial diameter （LAD） and amino-terminal pro-brain natriuretic peptide （NT-proBNP）. Methods： A total of 481 consecutive patients with SSS who underwent pacemaker implantation from January 2004 to December 2014 in our department were included. The CHA2DS2-VASc scores were retrospectively calculated according to the hospital medical records before pacemaker implantation. The outcome data （stroke and death） were collected by pacemaker follow-up visits and telephonic follow-up until December 3 l, 2015. Results： During 2151 person-years of follow-up, 46 patients （9.6%） suffered stroke and 52 （10.8%） died. The CHA2DS2-VASc score showed a significant association with the development of stroke （hazard ratio [HR] 1.45, 95% confidence interval [CI] 1.20-1.75, P 〈 0.00 1） and death （HR 1.45, 95% CI 1.22-1.71, P 〈 0.001）. The combination of increased LAD and the CHA2DS2-VASc score improved the predictive power for stroke （C-stat 0.69, 95% CI 0.61-4）.77 vs. C-stat 0.66, 95% CI 0.57-0.74, P = 0.013）, and the combination of increased NT-proBNP and the CHA2DS2-VASc score improved the predictive power for death （C-stat 0.70, 95% CI 0.64-0.77 vs. C-stat 0.67, 95% CI 0.60--0.75, P= 0.023）. Conclusions： CHA2DS2-VASc score is valuable for predicting stroke and death risk in patients with SSS after pacemaker implantation. The addition of LAD and NT-proBNP to the CHA2DS2-VASc score improved its predictive power for stroke and death, respectively, in this patient cohort. Future prospective studies are warranted to validate the benefit of adding LAD and NT-proBNP to the CHA2DS2-VASc score for

关键词： Amino-terminal Pro-brain Natriuretic Peptide CHA2DS2-VASc Score Left Atrial Diameter Risk Stratification SickSinus Syndrome

A technique for cardiac resynchronization therapy using left bundle branch area and left ventricular pacing

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Chinese Medical Journal 2021年第22期134卷 2744-2746页

作者： Xiang-Fei Feng Rui Zhang Mei Yang Bo liu Ya-Qin Han Qiu-Fen Lu yi-gang li Department of Cardiology Xinhua HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200092China.

Cardiac resynchronization therapy(CRT)via biventricu-lar pacing(BVP)is known to improve clinical outcomes and decreases all-cause mortality,particularly in patients with left bundle branch block(LBBB)and reduced left ventricular(LV)function.[1]Recently,several groups have shown the feasibility of left bundle branch area pacing(LBBAP)as an alternative choice to His bundle pacing in patients with LBBB by pacing the left bundle branch(LBB)region beyond the block site with a stable threshold and a short QRS duration(QRSd).[2,3]However,it is unknown whether the clinical efficacy of LBBAP with an appropriate atrioventricular(AV)delay would be the same as or better than that of LV epicardial pacing or CRT.

关键词： pacing ventricular bundle