检索结果-南通市图书馆

Calculation and Analysis of Velocity and Viscous Drag in an artery with a Periodic Pressure Gradient

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2012年第4期25卷 715-721页

作者： ALIZADEH M SEYEDPOUR S M MOZAFARI V BABAZADEH Shayan S Department of Mechanical Engineering Iran University of Science and TechnologyTehranIran Department of Mechanical Engineering Islamic Azad University of Science and ResearchTehranIran Department of Mechanical Engineering Tarbiat Modares UniversityTehranIran

Blood as a fluid that human and other living creatures are dependent on has been always considered by scientists and *** changes in blood pressure and its normal velocity can be a sign of a *** significant in blood fluid＇s mechanics is Constitutive equations and finding some relations for analysis and description of drag,velocity and periodic blood pressure in *** this paper,by considering available experimental quantities,for blood pressure and velocity in periodic time of a thigh artery of a living dog,at first it is written into Fourier series,then by solving Navier-Stokes equations,a relation for curve drawing of vessel blood pressure with rigid wall is *** in another part of this paper,vessel wall is taken in to consideration that vessel wall is elastic and its pressure and velocity are written into complex Fourier *** this case,by solving Navier-Stokes equations,some relations for blood velocity,viscous drag on vessel wall and blood pressure are *** this study by noting that vessel diameter is almost is large（3.7 mm）,and blood is considered as a Newtonian ***,available experimental quantities of pressure with obtained curve of solving Navier-Stokes equations are *** blood analysis in rigid vessel,existence of 48% variance in pressure curve systole peak caused vessel blood flow analysis with elastic wall,results in new relations for blood flow *** Resultant curve is obtained from new relations holding 10% variance in systole peak.

关键词： artery newtonian fluid rigid & elastic wall newtonian fluid

Predictors of adherence to home-based cardiac rehabilitation program among coronary artery disease outpatients in China

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2019年第10期16卷 749-755页

作者： Cheng GE Jing MA Yong XU Ya-Jun SHI Cheng-Hui ZHAO Ling GAO Jing BAI Yu WANG Zhi-Jun SUN Jun GUO Yun-Dai CHEN Department of Cardiology the First Medical Center of Chinese PLA General Hospital

Background Cardiac rehabilitation (CR) has proven beneficial for patients with coronary artery disease. However, adherence to CR programs is the key to the health improvement in those patients. Identifying predictors for adherence, which is very much unknown in China, would be valuable for effective rehabilitation. This study aims to determine the adherence to home-based CR programs in Chinese coronary artery disease patients and determine predictors of adherence. Methods The current study included 1033 outpatients with coronary heart disease in the First Medical Center of Chinese PLA General Hospital in Beijing from July 2015 to June 2017. Participants were given an exercise prescription and took part in home-based exercise training lasting for 3–24 months. A questionnaire was used to evaluate the completion of the CR program, understanding of the program, motivation of the patients, and family/peer support. Results Two thirds of the patients adhered well to the home-based CR program. Elder patients (≥ 65-year-old) adhere to the program better, while men adhered better than women. Patients who used to exercise (B = 6.756, P < 0.001), understood the program (B = 0.078, P = 0.002), with stronger motivation to participate (B = 0.376, P < 0.001), and received better family support (B = 0.487, P < 0.001) also adhere better to the program. Conclusions Understanding the program, self-motivation of patients, and family support help to keep patients engaged in a home-based CR program. Improvement of family support by educating both patients and families may be helpful in improving adherence to home-based CR programs.

关键词： Adherence Cardiac rehabilitation Coronary artery disease

Growth differentiation factor-15 is a prognostic marker in patients with intermediate coronary artery disease

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2020年第4期17卷 210-216页

作者： Wei WANG Xian-Tao SONG Yun-Dai CHEN Fei YUAN Feng XU Min ZHANG Kai TAN Xing-Sheng YANG Xian-Peng YU Kong-Yong CUI Shu-Zheng LYU Department of Cardiology Beijing Anzhen HospitalCapital Medical University and Beijing Institute of HeartLung and Blood Vessel DiseasesBeijingChina Department of Cardiology the First Medical Center of Chinese PLA General HospitalBeijingChina

Background Growth differentiation factor-15(GDF-15)is involved in multiple processes that are associated with coronary artery disease(CAD).However,little is known about the association between GDF-15 and the future ischemic events in patients with intermediate *** study was conducted to investigate whether plasma GDF-15 constituted risk biomarkers for future cardiovascular events in patients with intermediate *** A prospective study was performed based on 541 patients with intermediate CAD(20%–70%).GDF-15 of each patient was determined in a blinded *** primary endpoint was major adverse cardiac event(MACE),which was defined as a composite of all-cause death,nonfatal myocardial infarction,revascularization and readmission due to angina *** After a median follow-up of 64 months,504 patients(93.2%)completed the ***,the combined endpoint of MACE appeared in 134 patients(26.6%)in the overall population:26 patients died,11 patients suffered a nonfatal myocardial infarction,51 patients underwent revascularization,and 46 patients were readmitted for angina *** plasma levels of GDF-15(median:1172.02 vs.965.25 pg/m L,P=0.014)were higher in patients with ischemic events than those without *** adjusting for traditional risk factors,higher GDF-15 levels were significantly associated with higher incidence of the composite endpoint of MACE(HR=1.244,95%CI:1.048–1.478,Quartile 4 *** 1,P=0.013).Conclusions The higher level of GDF-15 was an independent predictor of long-term adverse cardiovascular events in patients with intermediate CAD.

关键词： Growth differentiation factor-15 Intermediate coronary artery disease Prognosis

Hepatic blood inflow occlusion without hemihepatic artery control in treatment of hepatocellular carcinoma

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2010年第46期16卷 5895-5900页

作者： Shan Jin,Department of General Surgery,Affiliated Hospital of Inner Mongolia Medical College,Hohhot 010050,Inner Mongolia Autonomous Region,China Chao-Liu Dai,Department of Hepatobiliary Surgery,Shengjing Hospital,China Medical University,Shenyang,Liaoning Province,China Department of General Surgery Affiliated Hospital of Inner Mongolia Medical College Hohhot 010050 Inner Mongolia Autonomous Region China. jinshangood@***

AIM:To investigate the clinical significance of hepatic blood inflow occlusion without hemihepatic artery control (BIOwHAC) in the treatment of hepatocellular carcinoma (HCC).METHODS:Fifty-nine patients with HCC were divided into 3 groups based on the technique used for achieving hepatic vascular occlusion:group 1,vascular occlusion was achieved by the Pringle maneuver (n=20);group 2,by hemihepatic vascular occlusion (HVO) (n=20);and group 3,by BIOwHAC (n=19).We compared the procedures among the three groups in term of operation time,intraoperative bleeding,postoperative liver function,postoperative complications,and length of hospital ***:There were no statistically significant differences (P > 0.05) in age,sex,pathological diagnosis,preoperative Child's disease grade,hepatic function,and tumor size among the three *** intraoperative complications or deaths occurrred,and there were no significant intergroup differences (P > 0.05) in intraoperative bleeding,hepatic function change 3 and 7 d after operation,the incidence of complications,and length of hospital *** and Pringle maneuver required a significantly shorter operation time than HVO;the difference in the serum alanine aminotransferase or aspartate aminotransferase levels before and 1 d after operation was more significant in the BIOwHAC and HVO groups than in the Pringle maneuver group (P < 0.05).CONCLUSION:BIOwHAC is convenient and safe;this technique causes slight hepatic ischemia-reperfusion injury similar to HVO.

关键词： Hepatic blood inflow occlusion without hemihepatic artery control Hepatocellular carcinoma Intraoperative bleeding Ischemia-reperfusion injury

Resection of gastric carcinoma with preservation of pancreas and clearance of lymph nodes along splenic artery: theory, technique and results

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 1999年第1期5卷 86-88页

作者： LIN Chao Hong Department of Surgery Shanghai Sixth People's Hospital Shanghai Second Medical University Shanghai China Shanghai Second Medical University China Department of Surgery Shanghai Sixth People's Hospital Shanghai 200233 China

ＮＴＲＯＤＵＣＴＩＯＮＣａｎｃｅｒｓｏｆｗｈｏｌｅｇａｓｔｒｉｃｓｔｏｍａｃｈ，ｃａｒｄｉａ，ａｎｄｇａｓｔｒｉｃｃｏｒｐｕｓｏｆｔｅｎｍｅｔａｓｔａｓｉｚｅｔｏｓｐｌｅｎｉｃｈｙｌｕｓａｎｄｌｙｍｐｈｎｏｄｅｓａ... 详细信息

ＮＴＲＯＤＵＣＴＩＯＮＣａｎｃｅｒｓｏｆｗｈｏｌｅｇａｓｔｒｉｃｓｔｏｍａｃｈ，ｃａｒｄｉａ，ａｎｄｇａｓｔｒｉｃｃｏｒｐｕｓｏｆｔｅｎｍｅｔａｓｔａｓｉｚｅｔｏｓｐｌｅｎｉｃｈｙｌｕｓａｎｄｌｙｍｐｈｎｏｄｅｓａｌｏｎｇｔｈｅｓｐｌｅｎｉｃａｒｔ...

关键词： stomach neoplasms / surgery lymph nodes pancreas / blood supply splenic artery

Blood flow differences in cun-kou(radial)artery and anterior tibial artery:normal people vs patients with chronic gastritis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 2018年第6期38卷 911-916页

作者： Wang Chao Wei Yun Zhang Lin Song Jia Liu Ni Fu Yanling Beijing University of Chinese Medicine Beijing 100029China

OBJECTIVE: To explore the blood flow differences in cun-kou(radial) artery and anterior tibial artery between normal people and patients with chronic gastritis METHODS: Using doppler ultrasonography, blood flow charts [peak systolic velocity(VP), maximum blood flow velocity in diastole(VD), mean blood flow velocity(VM), pulse index(PI), resistance index(RI), blood vessel diameter(D), vessel volume(SV),circulation blood flow periodic time(ET)] measured by at cun-kou(radial) artery and anterior tibial artery in normal group(n = 30) and chronic gastritis group(n = 30) in department of ultrasound, Beijing Anzhen hospital, capital medical ***: In the doppler flow charts of the normal group, there were statistically significant differences in VD, VM, D, RI, SV, ET between cun-kou artery and anterior tibial artery(P artery and anterior tibial artery(P artery and anterior tibial artery(P artery and anterior tibial artery(P artery and anterior tibial artery were not only proved to be significantly different, but also provided quantitative objective indexes for the study of cun-kou artery and anterior tibial artery doppler flow charts

关键词： Tibial arteries Cun-kou artery Ultrasonography,doppler

Disseminated intravascular coagulation after splenic artery aneurysm coils embolization:an unexpected surprise

在线全文

学校读者我要写书评

暂无评论

Gastroenterology Report 2023年第1期11卷 551-553页

作者： Marco Biolato Alessandro D’Errico Fiammetta Maria Rognoni Giuseppe Marrone Luca Laurenti Alessandro Cina Antonio Grieco Department of Medical and Surgical Sciences Fondazione Policlinico Universitario Agostino Gemelli IRCCSRomeItaly Institute of Internal Medicine Catholic University of the Sacred HeartRomeItaly Department of Diagnostic imaging Radiation oncology and HematologyFondazione Policlinico Universitario Agostino Gemelli IRCCSRomeItaly Institute of Hematology Catholic University of the Sacred HeartRomeItaly Institute of Radiology Catholic University of the Sacred HeartRomeItaly

Introduction The Society for Vascular Surgery recommends treating nonruptured splenic artery aneurysms(SAAs)of>3 cm with a demonstrable increase in size or with associated symptoms[1].Percutaneous intervention with embolization coils or covered stents has become popular due to its high technical success rates and low morbidity[2,3].

关键词： Surgery artery coils

Plasma soluble C-type lectin-like receptor-2 is associated with the risk of coronary artery disease

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Medicine 2020年第1期14卷 81-90页

作者： Min Fei Li Xiang Xichen Chai Jingchun Jin Tao You Yiming Zhao Changgeng Ruan Yiwen Hao Li Zhu Cyrus Tang Medical Institute Collaborative Innovation Center of HematologyState Key Laboratory of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China Jiangsu Institute of Hematology The First Affiliated HospitalSoochow UniversitySuzhou 215006China Department of Cardiology The Second Affiliated HospitalSoochow UniversitySuzhou 215004China Department of Cardiology The First Affiliated HospitalSoochow UniversitySuzhou 215006China Department of Blood Transfusion The First Affiliated HospitalChina Medical UniversityShenyang 110001China

Accumulating evidence suggests that C-type lectin-like receptor-2(CLEC-2)plays an important role in *** this case-control study,we investigated the association between CLEC-2 and incidence of coronary artery disease(CAD).A total of 216 patients,including 14 cases of stable angina pectoris(SAP,non-ACS)and 202 cases of acute coronary syndrome(ACS),and 89 non-CAD control subjects were *** levels of soluble CLEC-2(sCLEC-2)were measured using the enzyme-linked immunosorbent assay(ELISA).Compared with the control group(65.69(55.36–143.22)pg/mL),the plasma levels of sCLEC-2 were significantly increased in patients with CAD(133.67(88.76–220.09)pg/mL)and ACS(134.16(88.88–225.81)pg/mL).The multivariate adjusted odds ratios(95%confidence interval)of CAD reached 2.01(1.52–2.66)(Ptrend<0.001)for each 1-quartile increase in *** cubic splines showed a positive dose-response association between sCLEC2 and CAD incidence(Plinearity<0.001).The addition of sCLEC-2 to conventional risk factors improved the C statistic(0.821 vs.0.761,P=0.004)and reclassification ability(net reclassification improvement:57.45%,P<0.001;integrated discrimination improvement:8.27%,P<0.001)for *** conclusion,high plasma sCLEC-2 is independently associated with CAD risk,and the prognostic value of sCLEC-2 may be evaluated in future prospective studies.

关键词： soluble C-type lectin-like receptor-2 coronary artery disease risk factor

Effectiveness of Integrative Medicine Therapy on Coronary artery Disease Prognosis: A Real-World Study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Integrative Medicine 2019年第1期25卷 9-15页

作者： ZHAO Kang TIAN Jin-fan ZHAO Cong YUAN Fei GAO Zhu-ye LI Li-zhi LIU Hong-xu WANG Xian GE Chang-jiang LU Shu-zheng Department of Cardiology Beijing Anzhen Hospital Affiliated to Capital Medical University-Beijing Institute of Heart Lung and Blood Vessel Diseases Center for Cardiovascular Diseases Xiyuan Hospital China Academy of Chinese Medical Sciences Department of Cardiology Beijing Chinese Medicine Hospital Affiliated to Capital Medical University Department of Cardiology Dongzhimen Hospital Affiliated to Beijing University of Traditional Chinese Medicine

Objective: To evaluate the effectiveness of integrative medicine(IM) on patients with coronary artery disease(CAD) and investigate the prognostic factors of CAD in a real-world setting. Methods: A total of 1,087 hospitalized patients with CAD from four hospitals in Beijing, China were consecutively selected between August 2011 and February 2012. The patients were assigned to two groups based on the treatment: Chinese medicine(CM) plus conventional treatment, i.e., IM therapy(IM group); or conventional treatment alone(CT group). The endpoint was major adverse cardiac events [MACE; including cardiac death, myocardial infarction(MI), and revascularization]. Results: A total of 1,040 patients finished the 2-year follow-up. Of them, 49.4%(514/1,040) received IM therapy. During the 2-year follow-up, the total incidence of MACE was 11.3%. Most of the events involved revascularization(9.3%). Cardiac death/MI occurred in 3.0% of cases. For revascularization, logistic stepwise regression analysis revealed that age 65 years [odds ratio(OR), 2.224], MI(OR, 2.561), diabetes mellitus(OR, 1.650), multi-vessel lesions(OR, 2.554), baseline high sensitivity C-reactive protein level 3 mg/L(OR, 1.678), and moderate or severe anxiety/depression(OR, 1.849) were negative predictors(P<0.05); while anti-platelet agents(OR, 0.422), β-blockers(OR, 0.626), statins(OR, 0.318), and IM therapy(OR, 0.583) were protective predictors(P<0.05). For cardiac death/MI, age 65 years(OR, 6.389) and heart failure(OR, 7.969) were negative predictors(P<0.05), while statin use(OR, 0.323) was a protective predictor(P<0.05) and IM therapy showed a beneficial tendency(OR, 0.587), although the difference was not statistically significant(P=0.218). Conclusion: In a real-world setting, for patients with CAD, IM therapy was associated with a decreased incidence of revascularization and showed a potential benefit in reducing the incidence of cardiac death or MI.

关键词： coronary artery disease Chinese medicine integrative medicine effectiveness real-world study