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Comparative efficacy of proximal femoral nail vs dynamic condylar screw in treating unstable intertrochanteric fractures 被引量:1
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作者 Ahmed Mohamed Yousif Mohamed Monzir Salih +2 位作者 Mohanad Abdulgadir Ayman E Abbas Duha Lutfi Turjuman 《World Journal of Orthopedics》 2024年第8期796-806,共11页
BACKGROUND Among the most frequent hip fractures are trochanteric fractures,which usually occur from low-energy trauma like minor falls,especially in older people with osteoporotic bones.AIM To evaluate the treatment ... BACKGROUND Among the most frequent hip fractures are trochanteric fractures,which usually occur from low-energy trauma like minor falls,especially in older people with osteoporotic bones.AIM To evaluate the treatment efficacy of dynamic condylar screws(DCS)and proximal femoral nails(PFN)for unstable intertrochanteric fractures.METHODS To find pertinent randomized controlled trials and retrospective observational studies comparing PFN with DCS for the management of unstable femoral intertrochanteric fractures,a thorough search was carried out.For research studies published between January 1996 and April 2024,PubMed,EMBASE,Scopus,Web of Science,Cochrane Library,and Google Scholar were all searched.The complete texts of the papers were retrieved,vetted,and independently examined by two investigators.Disputes were settled by consensus,and any disagreements that persisted were arbitrated by a third author.RESULTS This study included six articles,comprising a total of 173 patients.Compared to the DCS,the PFN had a shorter operation time[mean difference(MD):-41.7 min,95%confidence interval(95%CI):-63.04 to-20.35,P=0.0001],higher success rates with closed reduction techniques[risk ratio(RR):34.05,95%CI:11.12-104.31,P<0.00001],and required less intraoperative blood transfusion(MD:-1.4 units,95%CI:-1.80 to-1.00,P<0.00001).Additionally,the PFN showed shorter fracture union time(MD:-6.92 wk,95%CI:-10.27 to-3.57,P<0.0001)and a lower incidence of reoperation(RR:0.37,95%CI:0.17-0.82,P=0.01).However,there was no discernible variation regarding hospital stay,implant-related complications,and infections.CONCLUSION Compared to DCS,PFN offers shorter operative times,reduces the blood transfusions requirements,achieves higher closed reduction success,enables faster fracture healing,and lowers reoperation incidence. 展开更多
关键词 Intertrochanteric fracture UNSTABLE Dynamic condylar screw Proximal femoral nail META-ANALYSIS Comparative study
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Analysis of the Nursing Effect of Continuity of Care on Elderly Patients with Coronary Heart Disease Unstable Angina and its Impact on Quality of Life 被引量:1
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作者 Ling Yan 《Journal of Clinical and Nursing Research》 2024年第2期185-190,共6页
Objective:To analyze the effect of using continuity of care for elderly patients with coronary heart disease(CHD)with unstable angina pectoris(UAP)and its impact on their quality of life.Methods:100 cases of elderly p... Objective:To analyze the effect of using continuity of care for elderly patients with coronary heart disease(CHD)with unstable angina pectoris(UAP)and its impact on their quality of life.Methods:100 cases of elderly patients with CHD with UAP admitted to our hospital from March 2022 to March 2023 were selected and grouped into an observation group and a control group of 50 cases each according to the randomized number table method.The nursing effect and quality of life of the observation group(continuity nursing)and the control group(routine nursing)were compared.Results:The total effective rate of nursing care was 96.00%observation group and 80.00%for the control group,and the differences were significant(χ2=6.061,P<0.05).Patients in the observation group had fewer episodes(1.42±0.21)times/week and a shorter duration(5.46±0.39)min,which were better than the control group(t=3.465,2.973;P<0.05).The depression self-rating depression scale(SDS)score(42.16±6.64)and anxiety self-rating scale(SAS)score(32.26±7.35)in the observation group were lower and the quality of life was higher as compared to that of the control group(P<0.05).Conclusion:Continuous nursing care improved the nursing effect of elderly CHD with UAP patients,promoted the alleviation of UAP symptoms,improved patient mentality,and improved their quality of life.Hence,continuous nursing care possesses significant clinical application value. 展开更多
关键词 Continuity of care ELDERLY Coronary heart disease Unstable angina Nursing outcomes Quality of life
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Unstable evolution of railway slope under the rainfall-vibration joint action
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作者 DONG Haoyu WANG Jiading +2 位作者 ZHANG Dengfei LI Lin XU Yuanjun 《Journal of Mountain Science》 SCIE CSCD 2024年第4期1419-1431,共13页
Understanding the unstable evolution of railway slopes is the premise for preventing slope failure and ensuring the safe operation of trains.However,as two major factors affecting the stability of railway slopes,few s... Understanding the unstable evolution of railway slopes is the premise for preventing slope failure and ensuring the safe operation of trains.However,as two major factors affecting the stability of railway slopes,few scholars have explored the unstable evolution of railway slopes under the joint action of rainfall-vibration.Based on the model test of sandy soil slope,the unstable evolution process of slope under locomotive vibration,rainfall,and rainfall-vibration joint action conditions was simulated in this paper.By comparing and analyzing the variation trends of soil pressure and water content of slope under these conditions,the change laws of pore pressure under the influence of vibration and rainfall were explored.The main control factors affecting the stability of slope structure under the joint action conditions were further defined.Combined with the slope failure phenomena under these three conditions,the causes of slope instability resulting from each leading factor were clarified.Finally,according to the above conclusions,the unstable evolution of the slope under the rainfall-vibration joint action was determined.The test results show that the unstable evolution process of sandy soil slope,under the rainfall-vibration joint action,can be divided into:rainfall erosion cracking,vibration promotion penetrating,and slope instability sliding three stages.In the process of slope unstable evolution,rainfall and vibration play the roles of inducing and promoting slide respectively.In addition,the deep cracks,which are the premise for the formation of the sliding surface,and the violent irregular fluctuation of soil pressure,which reflects the near penetration of the sliding surface,constitute the instability characteristics of the railway slope together.This paper reveals the unstable evolution of sandy soil slopes under the joint action of rainfall-vibration,hoping to provide the theoretical basis for the early warning and prevention technology of railway slopes. 展开更多
关键词 Rainfall vibration joint action Small scale model tests Unstable evolution process Unstable characteristics Inducing sliding and promoting sliding
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Esophageal inserted subclavian catheter:a rare complication
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作者 DilberÜçöz Kocaşaban SertaçGüler 《World Journal of Emergency Medicine》 SCIE CAS CSCD 2024年第3期243-245,共3页
Central venous catheterization(CVC) is an invasive procedure for administering fluids,nutrients,and drugs;monitoring central venous pressure;performing pulmonary artery catheterization;and placing transvenous pacemake... Central venous catheterization(CVC) is an invasive procedure for administering fluids,nutrients,and drugs;monitoring central venous pressure;performing pulmonary artery catheterization;and placing transvenous pacemakers in intensive care units and all specialties,from anesthesia to emergency medicine,for the treatment of trauma and hemodynamically unstable pediatric and adult patients.[1,2]Complications have been observed in more than 15% of patients who underwent CVC.Mechanical,infectious,and thrombotic complications have been reported in 5%–19%,5%–26%,and 2%–26% of patients,respectively.[3] Malposition,on the other hand,is common in subclavian catheter insertion and is usually associated with an initially misplaced guidewire.[4] 展开更多
关键词 UNSTABLE INSERTION initially
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Narrative review of latest research progress about robotic percutaneous coronary intervention
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作者 Zhen-Yu LIU Guang-Yao ZHAI 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2024年第8期816-825,共10页
Robotic percutaneous coronary intervention(R-PCI)is a novel technology in which operators can manipulate guidewires and catheter devices in interventional cardiology.This approach provides great benefits to interventi... Robotic percutaneous coronary intervention(R-PCI)is a novel technology in which operators can manipulate guidewires and catheter devices in interventional cardiology.This approach provides great benefits to interventional cardiologists in terms of reducing both radiation exposure and orthopedic injuries.Several large,high-quality cohort studies have confirmed the short-term safety and high technical success rate of R-PCI.However,randomized long-term data are still needed before adopting them as part of standard coronary interventions.Furthermore,tele-stenting for complex coronary lesions has significant potential for R-PCI.We need to overcome the present relevant challenges for its application such as inherent delays,bedside care for unstable patients from R-PCIs to manual PCIs(M-PCIs),incompatibility for a thrombus aspiration catheter and heavily calcified lesions.There is a great future in laboratory workflow teams,3D-printed anatomical models and multiple joint collaborative control algorithms.This narrative review summarizes the latest developments in R-PCI,with a focus on developments in robotic technology,and discusses the current and future potential use of R-PCI in clinical practice globally. 展开更多
关键词 CORONARY INJURIES UNSTABLE
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On the Features of Thermal Convection in a Compressible Gas
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作者 Igor B.Palymskiy 《Fluid Dynamics & Materials Processing》 EI 2024年第5期957-974,共18页
The fully nonlinear equations of gas dynamics are solved in the framework of a numerical approach in order to study the stability of the steady mode of Rayleigh-Bénard convection in compressible,viscous and heat-... The fully nonlinear equations of gas dynamics are solved in the framework of a numerical approach in order to study the stability of the steady mode of Rayleigh-Bénard convection in compressible,viscous and heat-conducting gases encapsulated in containers with no-slip boundaries and isothermal top and bottom walls.An initial linear temperature profile is assumed.A map of the possible convective modes is presented assuming the height of the region and the value of the temperature gradient as influential parameters.For a relatively small height,isobaric convection is found to take place,which is taken over by an adiabatic mode when the height exceeds the critical value,or by a super-adiabatic mode in case of a relatively high temperature gradient.In the adiabatic mode,convective flow develops due to adiabatic processes given a stable initial stratification.An analytic formula for the critical height of the region is derived taking into account and neglecting the dependence of the gas viscosity on the temperature.Moreover,an analytic formula is obtained for the upper boundary of the region of applicability of the Boussinesq approximation for incompressible gases.These models for compressible gases are relevant to practical situations such as the study of convective flows in spatially extended gas mixtures when dealing with safety issues related to hydrocarbons stored in gas stations.A dangerous situation arises when the tank is almost empty but some hydrocarbon is left at the bottom of the tank.In the presence of convective flows,the vaporized fuel is mixed with the oxidizer(air)forming a gas-vapor medium.However,if the volumetric concentration of fuel vapor(hydrocarbon)is in the interval between the lower and upper concentration limits of ignition,then the gas-vapor mixture becomes explosive and any accidental spark is sufficient to cause an emergency. 展开更多
关键词 Rayleigh-Bénard convection GAS stable stratification unstable stratification temperature gradient
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Effects of systematic cardiac rehabilitation training in elderly patients with unstable angina following cardiac stent implantation
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作者 Ling-Ling Yan Xue Yang +1 位作者 Lu Chen Xiao Lu 《World Journal of Clinical Cases》 SCIE 2024年第20期4137-4145,共9页
BACKGROUND Coronary stent implantation is usually used to treat unstable angina to alleviate stenosis or occlusion,promoting blood flow restoration and alleviating symptoms such as myocardial ischemia.And postoperativ... BACKGROUND Coronary stent implantation is usually used to treat unstable angina to alleviate stenosis or occlusion,promoting blood flow restoration and alleviating symptoms such as myocardial ischemia.And postoperative cardiac rehabilitation is essential for enhancing recovery and prognosis.Nevertheless,conventional rehabilitation lacks specificity,particularly for elderly patients with multiple comorbidities and poor compliance,rendering it less effective.AIM To investigate the effects of systematic cardiac rehabilitation training in elderly patients with unstable angina following coronary stenting intervention.METHODS A retrospective enrollment was conducted comprising fifty-four elderly patients with unstable angina pectoris who underwent systematic cardiac rehabilitation training after receiving coronary intervention as the rehabilitation group,while fifty-three elderly patients who received basic nursing and rehabilitation guidance measures after coronary intervention were assigned to the control group.Differences in Seattle Angina Questionnaire scores,survival quality(SF-36)scores,cardiopulmonary exercise function assessment index,echocardiographic cardiac function index,and adverse cardiovascular events were compared between the two groups.RESULTS After intervention,the rehabilitation group observed greater VO2 Max,maximum metabolic equivalent,eft ventricular ejection fraction,left ventricular end-diastolic diameter and smaller left ventricular end-systolic diameter.And the rehabilitation group observed greater scores of physical activity limitation,stable angina pectoris,treatment satisfaction,and SF-36 score.The incidence of adverse cardiovascular events in the two groups,showed no significant difference.CONCLUSION Systematic cardiac rehabilitation following coronary stenting in elderly patients with unstable angina pectoris can enhance cardiac function recovery,consequently enhancing both quality of life and cardiopulmonary exercise tolerance. 展开更多
关键词 Systematicity Cardiac rehabilitation training Unstable angina pectoris Coronary stenting implantation Interventional surgery Quality of life Cardiac function Exercise tolerance
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2024全球十大趋势
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作者 现代院“2024全球趋势”课题组 Chen Xiangyang 《Contemporary International Relations》 2024年第2期104-111,共8页
In 2023, momentous changes of a like not seen in a century accelerated across the globe. The world as a whole was in a period of turbulence and change: regional conflicts cropped up, major-country competition became m... In 2023, momentous changes of a like not seen in a century accelerated across the globe. The world as a whole was in a period of turbulence and change: regional conflicts cropped up, major-country competition became more complex, climate change deteriorated, and the scientific and technological revolution accelerated. The international security situation was worrisome, against which China demonstrated its sense of duty as a responsible country. Looking forward to 2024, in the face of an unstable, uncertain, and insecure external environment, China will advance its four global initiatives in a coordinated manner, contributing positive energy to the world. 展开更多
关键词 UNSTABLE TURBULENCE REVOLUTION
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Analysis and Prospects of the World Economic Situation 2023-2024
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作者 Zhang Yuyan Xu Xiujun 《Contemporary World》 2024年第1期27-31,共5页
At present,the growth momentum of the world economy is clearly insufficient,and faced with many unstable,uncertain and unpredictable factors,the world economy is generally on a downward path.From the perspective of tr... At present,the growth momentum of the world economy is clearly insufficient,and faced with many unstable,uncertain and unpredictable factors,the world economy is generally on a downward path.From the perspective of trend changes,the world economy will still be in the process of reshaping its growth momentum in 2024,with positive factors accumulating but downward pressure remaining. 展开更多
关键词 DOWNWARD UNSTABLE ECONOMY
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Study on Epidemiological Profile, Clinical Profile, and Angiographic Patterns in Acute Coronary Syndrome Patients in a Tertiary Health Care Center in Haryana
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作者 Ghritachi Sandal Kuldip Singh Laller +1 位作者 Ashwani Kumar Yadav Sunil Kumar Bamel 《World Journal of Cardiovascular Diseases》 CAS 2024年第10期664-680,共17页
Background: Cardiovascular diseases are the leading cause of death in India, with coronary artery disease (CAD) accounting for a majority of the deaths. There are few large registries on acute coronary syndrome (ACS) ... Background: Cardiovascular diseases are the leading cause of death in India, with coronary artery disease (CAD) accounting for a majority of the deaths. There are few large registries on acute coronary syndrome (ACS) from India. Our aim is to study the clinical and epidemiological profile of ACS PATIENTS presenting to our institute, including their angiographic features. Methods: This hospital-based observational, single tertiary care center, prospective study was conducted on patients admitted in the Department of Cardiology at a tertiary care center in Haryana. The study included 400 patients aged greater than 18 years who were admitted with the diagnosis of ACS, and it was carried out for 1 year. The epidemiological profile, clinical history, risk factors, electrocardiogram findings, and angiographic pattern were studied and analyzed with appropriate statistical tools. Results: The mean age of the study population was 55.12 ± 11.78 years. Male and female ratio was 2.4:1. The majority of the patients came from rural background (80%);24% of the patients were illiterate. Smoking was the most common risk factor (51.5%) in our study population followed by hypertension (40%) and diabetes (28%). Unstable angina was the most common type of ACS, which was found in 68.25% of patients. Premature CAD was found in 27.8% of patients and obstructive CAD was found in 63% of patients. Coronary angiography revealed that 39% had single vessel disease (SVD), 23.5% had double vessel disease (DVD), and 27.5% had triple vessel disease (TVD). LAD was more commonly involved, followed by RCA and LCX. Within the first 24 hours, 67% of patients sought medical assistance and only 38.5% received definitive treatment, suggesting a delay in seeking definitive treatment in our study population. Conclusion: The study suggests that unstable angina is the most common form of ACS in the study population, which is mostly of rural background with significant delay in seeking medical help. Smoking is the most common risk factor in the study population. 展开更多
关键词 Acute Coronary Syndrome Angiographic Pattern Unstable Angina
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PFNA2 versus 95 Degree Condylar Blade Plate in the Management of Unstable Trochanteric Fractures
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作者 Piyush Gadegone Wasudeo Gadegone +1 位作者 Vijayanand Lokhande Virender Kadian 《Open Journal of Orthopedics》 2024年第2期93-104,共12页
Purpose: The proximal femoral nail anti-rotation (PFNA) is known to have advantages in enhancing the anchorage ability of internal fixation in elderly unstable osteoporotic intertrochanteric fracture patients. However... Purpose: The proximal femoral nail anti-rotation (PFNA) is known to have advantages in enhancing the anchorage ability of internal fixation in elderly unstable osteoporotic intertrochanteric fracture patients. However whether it is superior to condylar blade fixation is not clear. This study aimed to determine which treatment has better clinical outcomes in older patients. Materials and Methods: A total of 86 patients over the age of 60 with unstable trochanteric fractures within the past 3 weeks, were included in this prospective study conducted from June 1, 2018, to May 31, 2021. All the intertrochanteric fractures were classified according to AO/OTA classification. Among them, 44 cases were treated with the Proximal Femoral Nail (PFNA2) with or without an augmentation screw, and 42 cases were treated with the Condylar Blade Plate. In addition, the operative time, intraoperative blood loss, intraoperative and postoperative blood transfusion, postoperative weight-bearing time, hospitalization time, Harris score of hip function, Kyle’s criteria and postoperative complications were compared between the two groups. Results: The mean duration of surgery for the PFN group was 66.8 minutes (on average), whereas for the condylar blade plate group, it was 99.30 minutes (on average). The PFNA2 group experienced less blood loss (average of 80 mL) compared to the condylar blade plate group (average of 120 mL). Union and partial weight-bearing occurred earlier in the PFNA2 group (14.1 weeks and 10.6 weeks, respectively) compared to the Condylar blade plate group (18.7 weeks and 15.8 weeks). In two patients from the PFNA2 group, screw backing out and varus collapse complications were encountered;however, these patients remained asymptomatic and did not require revision surgery. In two other patients, screw cut out and breakage of the nail at the helical screw hole leading to non-union of the proximal femur were observed during the nine-month follow-up, necessitating revision surgery with prosthetic replacement. Among the condylar blade plate group, three patients experienced complications, including blade breakage at the blade and plate junction. In two cases, the fracture united in varus, and in one case, the blade cut through, resulting in non-union of the femoral head, which required revision surgery. According to the Harris hip score and Kyle’s criteria, a good-excellent outcome was observed in 92.85% of cases in the PFNA2 group and 90.90% of cases in the condylar blade plate group. Conclusion: Both the Proximal Femoral Nail A2 and Condylar blade plate are effective implants for the treatment of unstable trochanteric fractures. The intramedullary implant promotes biological healing and allows for early ambulation with minimal complications. Similarly satisfactory restoration of anatomy and favorable radiological and functional results can be achieved with the biological fixation provided by the 95-degree condylar blade plate. However, the use of PFNA2 internal fixation technique has the advantage of less trauma in elderly patients than the 95-degree condylar blade plate. 展开更多
关键词 Proximal Femoral Nail Anti-Rotation Condylar Blade Plate Internal Fixation Unstable Intertrochanteric Fracture OSTEOPOROTIC
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Singular Points, Closed Orbits, Stable Manifolds and Unstable Manifolds of Second Order Autonomous Birkhoff Systems 被引量:1
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作者 陈向炜 梅凤翔 《Journal of Beijing Institute of Technology》 EI CAS 1998年第4期330-336,共7页
Aim To study singular points, closed orbits, stable manifolds and unstable manifolds of a second order autonomous Birkhoff system. Methods Qualitative methods of ordinary differential equation were used. Results and ... Aim To study singular points, closed orbits, stable manifolds and unstable manifolds of a second order autonomous Birkhoff system. Methods Qualitative methods of ordinary differential equation were used. Results and Conclusion The criteria for singular points, closed orbits and hyperbolic equilibrium points of a second order autonomous Birkhoff system are given. Moreover the stability of equilibria, stable manifolds and unstable manifolds are obtained. 展开更多
关键词 Birkhoff system singular point closed orbit stable manifold unstable manifold
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A method for prediction of unstable deformation in hot forging process by simulation
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作者 鲁世强 李鑫 +2 位作者 王克鲁 刘诗彪 傅铭旺 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第12期3739-3747,共9页
A method is proposed for prediction of the unstable deformation in hot forging process using both the determined thermomechnical parameter windows of the unstable deformation zones and finite element simulation. Takin... A method is proposed for prediction of the unstable deformation in hot forging process using both the determined thermomechnical parameter windows of the unstable deformation zones and finite element simulation. Taking Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy as the testing material, the thermomechnical parameter windows of the unstable deformation zones for the Ti-alloy are integrated into a commercial finite element simulation software platform. The distribution and variation of the unstable deformation zones of the alloy in hot compression process are simulated and predicted using the tailor-made finite element codes in the finite element platform. The simulation results tally with the physical experiments and the proposed method for simulation and prediction of the unstable deformation is thus verified and its efficiency is validated. 展开更多
关键词 instability map unstable deformation instability deformation simulation Ti-6.5Al-3.5Mo-1.5Zr-0.3Si titanium alloy
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急性冠状动脉综合征心电图研究进展 被引量:3
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作者 王斌 张梅静 《心电图杂志(电子版)》 2014年第3期129-133,共5页
急性冠状动脉综合征(acute coronary syndrome,ACS)是以冠状动脉粥样硬化斑块破裂或侵蚀继发完全,或不完全闭塞性血栓形成为病理基础的一组临床综合征。据报道,全世界每年约有2000万人死于心脏疾病,而ACS是其死亡的主要原因之一[1]。... 急性冠状动脉综合征(acute coronary syndrome,ACS)是以冠状动脉粥样硬化斑块破裂或侵蚀继发完全,或不完全闭塞性血栓形成为病理基础的一组临床综合征。据报道,全世界每年约有2000万人死于心脏疾病,而ACS是其死亡的主要原因之一[1]。按2000年美国心脏病学会(ACC)及美国心脏协会(AHA)联合发布的ACS的治疗指南,ACS主要包括:不稳定型心绞痛(unstable angina,UA)、非ST段抬高心肌梗死(non—ST segment elevationmyocardial,NSTEMI)、ST段抬高心肌梗死(ST segmentelevation,STEMI)。 展开更多
关键词 闭塞性血栓 不稳定型心绞痛 心电图改变 UNSTABLE ANGINA 急性心肌梗死 美国心脏病学会 临床综合征 急性冠脉综合征 美国心脏协会
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通心络与阿托伐他汀并用对不稳定型心绞痛降脂疗效及内皮功能的影响 被引量:3
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作者 孔祥奇 汪凤兰 《实用中医内科杂志》 2009年第11期51-52,共2页
[目的]观察通心络与阿托伐他汀联合应用对不稳定型心绞痛(UA)的降脂效果及对血管内皮功能的影响。[方法]入选的91例UA,总胆固醇(TC)≥4.68mmol/L,将其随机分为通心络与阿托伐他汀联合组(联合组)及阿托伐他汀组(对照组)。两组均为每晚口... [目的]观察通心络与阿托伐他汀联合应用对不稳定型心绞痛(UA)的降脂效果及对血管内皮功能的影响。[方法]入选的91例UA,总胆固醇(TC)≥4.68mmol/L,将其随机分为通心络与阿托伐他汀联合组(联合组)及阿托伐他汀组(对照组)。两组均为每晚口服阿托伐他汀20mg,联合组每天加服通心络胶囊2粒,每天3次。测定治疗前及治疗4、8周后血脂、C反应蛋白(CRP)、内皮素(ET)、肝肾功能及肌酸激酶(CK)。[结果]联合组及对照组均能明显降低血脂、CPR、及ET水平(P<0.05),但联合组效果更佳。[结论]UA联合应用通心络与阿托伐他汀能明显降低血脂,减轻炎症、稳定斑块、改善内皮功能。 展开更多
关键词 通心络胶囊 阿托伐他汀 不稳定型心绞痛 降脂疗效 血管内皮功能 Endothelial Function Unstable ANGINA 联合应用 降低血脂 对照组 总胆固醇 治疗 稳定斑块 降脂效果 肌酸激酶 肝肾功能 反应蛋白 内皮素 炎症 随机
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Angiographical and histopathologic study of atherosclerotic plaques in acute myocardial infarction
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作者 石怀银 王士雯 谭端军 《中国介入心脏病学杂志》 1998年第4期193-193,共1页
Objective Compare the morphology of atherosclerotic plaquesmgiographically and histopathologically in acute myocardialmfarction m order to accumulate experience in recognizing plaquerupture and thrombus by angiogrames... Objective Compare the morphology of atherosclerotic plaquesmgiographically and histopathologically in acute myocardialmfarction m order to accumulate experience in recognizing plaquerupture and thrombus by angiogrames.Material and methods 16postmortem cases of acute myocardial infarction were studied.The coronary arteries were romoved en block,filled with barium the lumen and ridiographed.Then the arteries wereontinuously insetted and routin HE sections were made.Results 16 cases had plaque ruptures and thrombi.Among the total98 blocks,21 had plaque ruptures on which 20 thrombiccur(95.23%).while the other 777 unrupured blocks had only 2hrombi(0.25%).The difference was significant(p【0.001).Therupture mostly occur on unstable plaques.The ruptured plaqueswith thrombi had different angiographical morphology withunruptured plaques.The former had irregular borders andunraluminal lucencies;while the Iatter had smooth borders and nointraluminal lucencies.Conclusions Plaque ruprure withthrumbus was the major cause of acute myocardial infarction andthe ruptured plaques with thrombus had different angiographicalapperances with unruptured plaques. 展开更多
关键词 PLAQUES THROMBUS unstable RUPTURED ARTERIES accumulate LUMEN mostly irregular PLAQUE
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不稳定型心绞痛使用伊诺肝素后凝血及血浆抗Xa活性的性别差异
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作者 田军 席连英 +6 位作者 刘琴 熊敏 张云 陈东方 杨祖杰 陆宝凤 艾丽 《实用心电学杂志》 2010年第5期325-327,共3页
目的研究不同性别不稳定型心绞痛(UAP)者使用伊诺肝素后,血液凝血指标及血浆抗Xa活性的性别差异。方法 UAP者男、女两组各40例,年龄28~75岁。给予伊诺肝素1mg/kg,腹壁皮下注射,每12h1次,疗程7d,于末次用药后12h抽静脉血检测血浆凝血酶... 目的研究不同性别不稳定型心绞痛(UAP)者使用伊诺肝素后,血液凝血指标及血浆抗Xa活性的性别差异。方法 UAP者男、女两组各40例,年龄28~75岁。给予伊诺肝素1mg/kg,腹壁皮下注射,每12h1次,疗程7d,于末次用药后12h抽静脉血检测血浆凝血酶原时间(PT)、活化部分凝血酶原时间(APTT)及血浆抗Xa活性,观察治疗期间男、女两组出血事件发生情况。结果用药后男、女两组PT、APTT均轻度延长,两组之间无明显差异(P>0.05);血浆抗Xa活性均增高,女性明显高于男性(P<0.05);女性组出血事件发生率明显高于男性组(P<0.05)。结论伊诺肝素采用1mg/kg给药治疗不同性别UAP者均可获得满意的抗凝效果,对PT、APTT影响较小,且无明显性别差异,无需实验室检测。两组均可达到有效血浆抗Xa活性,女性显著高于男性。出血事件发生率女性明显高于男性。 展开更多
关键词 不稳定型心绞痛 伊诺肝素 活化部分凝血酶原时间 血浆凝血酶原时间 活性 性别差异 men and women ENOXAPARIN unstable angina 女性 男性 不同性别 事件 发生率 出血 APTT 实验室检测 静脉血检测 UAP 治疗期间
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Oscillation of Unstable Second Order Neutral Differential Equations with Positive and Negative Coefficients
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作者 徐继军 《Chinese Quarterly Journal of Mathematics》 CSCD 2000年第3期72-75,共4页
This paper discusses a class of unstable second order neutral differential equations with positive and negative coeffcients. Sufficient conditions for all bounded solutions of the equations to be oscillatory are obtai... This paper discusses a class of unstable second order neutral differential equations with positive and negative coeffcients. Sufficient conditions for all bounded solutions of the equations to be oscillatory are obtained. 展开更多
关键词 neutral equation UNSTABLE OSCILLATION
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Integration system research and development for three-dimensional laser scanning information visualization in goaf 被引量:1
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作者 罗周全 黄俊杰 +2 位作者 罗贞焱 汪伟 秦亚光 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第7期1985-1994,共10页
An integration processing system of three-dimensional laser scanning information visualization in goaf was developed. It is provided with multiple functions, such as laser scanning information management for goaf, clo... An integration processing system of three-dimensional laser scanning information visualization in goaf was developed. It is provided with multiple functions, such as laser scanning information management for goaf, cloud data de-noising optimization, construction, display and operation of three-dimensional model, model editing, profile generation, calculation of goaf volume and roof area, Boolean calculation among models and interaction with the third party soft ware. Concerning this system with a concise interface, plentiful data input/output interfaces, it is featured with high integration, simple and convenient operations of applications. According to practice, in addition to being well-adapted, this system is favorably reliable and stable. 展开更多
关键词 GOAF laser scanning visualization integration system 1 Introduction The goaf formed through underground mining of mineral resources is one of the main disaster sources threatening mine safety production [1 2]. Effective implementation of goaf detection and accurate acquisition of its spatial characteristics including the three-dimensional morphology the spatial position as well as the actual boundary and volume are important basis to analyze predict and control disasters caused by goaf. In recent years three-dimensional laser scanning technology has been effectively applied in goaf detection [3 4]. Large quantities of point cloud data that are acquired for goaf by means of the three-dimensional laser scanning system are processed relying on relevant engineering software to generate a three-dimensional model for goaf. Then a general modeling analysis and processing instrument are introduced to perform subsequent three-dimensional analysis and calculation [5 6]. Moreover related development is also carried out in fields such as three-dimensional detection and visualization of hazardous goaf detection and analysis of unstable failures in goaf extraction boundary acquisition in stope visualized computation of damage index aided design for pillar recovery and three-dimensional detection
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血浆NT-proBNP水平与不稳定型心绞痛近期预后的关系
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作者 王伟 任国成 +2 位作者 高志广 张晓莉 宝凤梅 《承德医学院学报》 2014年第1期28-30,共3页
目的:探讨血浆N末端-脑钠肽前体(NT-proBNP)水平与不稳定型心绞痛(UAP)患者近期预后的关系。方法:因胸痛住院并经冠状动脉造影检查确诊为UAP的患者52例,分别检测症状发作后18h和症状缓解96h血浆NT-proBNP水平,并计算差值比。对UAP患者随... 目的:探讨血浆N末端-脑钠肽前体(NT-proBNP)水平与不稳定型心绞痛(UAP)患者近期预后的关系。方法:因胸痛住院并经冠状动脉造影检查确诊为UAP的患者52例,分别检测症状发作后18h和症状缓解96h血浆NT-proBNP水平,并计算差值比。对UAP患者随访30天,记录患者主要心血管事件(MACE)的发生情况,并应用受试者工作曲线(ROC)分析差值比对UAP患者发生近期心血管事件的预测价值。结果:发生心血管事件患者的NT-proBNP差值比高于未发生者,差异具有统计学意义(P<0.05)。ROC结果显示,NT-proBNP差值比为0.99时,其预测UAP患者近期发生心血管事件的灵敏度和特异度分别为64.3%和81.8%。结论:NTproBNP差值比可用来预测UAP患者近期心血管事件的发生情况,可作为筛选高危病例的一个指标。 展开更多
关键词 N末端-脑钠肽前体 不稳定型心绞痛 受试者工作曲线 主要心血管事件 N-terminal pro-brain NATRIURETIC peptide (NT-proBNP) Unstable angina PECTORIS (UAP) Main adverse cardiovascular events (MACE)
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