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血流方对肾虚血瘀型冻融胚胎移植患者子宫内容受性影响 被引量:3
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作者 周茂溪 冯雪花 +1 位作者 李玉 孙伟 《辽宁中医药大学学报》 CAS 2013年第10期183-184,共2页
目的:观察血流方时肾虚血瘀型冻融胚胎移植周期患者子宫内膜的容受性的影响。方法:收集复苏移植周期中子宫内膜发育不良的肾虚血瘀型不孕症患者80例,随机分为2组,观察组40例,于月经干净开始服血流方,每日1剂,用至移植日;月经第3天口服... 目的:观察血流方时肾虚血瘀型冻融胚胎移植周期患者子宫内膜的容受性的影响。方法:收集复苏移植周期中子宫内膜发育不良的肾虚血瘀型不孕症患者80例,随机分为2组,观察组40例,于月经干净开始服血流方,每日1剂,用至移植日;月经第3天口服戊酸雌二醇片,每日2次,每次2 mg;对照组40例,月经第3天开始口服戊酸雌二醇片,每日2次,每次2 mg。移植后均加用黄体酮,每日1次,每次肌肉注射60 mg;肌肉注射HCG,隔日1次,每次2000 U,用3 d。于月经第2天、移植前1天监测子宫内膜类型及厚度和子宫内膜下的血流参数,同时随访两组的妊娠结局。结果:治疗后两组患者子宫内膜厚度及类型比较差异显著(P<0.05)。治疗后两组患者子宫内膜下血流参数比较差异有统计学意义(P<0.05);观察组妊娠率高于对照组,差异显著(P<0.01)。结论:血流方能改善复苏移植周期中子宫内膜的生长,改善子宫内膜类型及子宫内膜下血流情况,有利于胚胎着床,提高临床妊娠率。 展开更多
关键词 血流方 冻融胚胎移植周期 子宫内膜容受性
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痰瘀阻络方治疗急性脑梗死大脑中动脉狭窄46例临床观察 被引量:1
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作者 唐晓刚 吴明华 《山东中医杂志》 2017年第10期867-869,共3页
目的 :探讨痰瘀阻络方为主方对大脑中动脉狭窄卒中患者近期、远期疗效的影响。方法 :将86例急性缺血性卒中的患者随机分成中药组46例和单纯西药组40例,两组均予常规基础治疗,中药组加用中药方剂,分别于就诊当日,治疗7,14 d及3个月后观... 目的 :探讨痰瘀阻络方为主方对大脑中动脉狭窄卒中患者近期、远期疗效的影响。方法 :将86例急性缺血性卒中的患者随机分成中药组46例和单纯西药组40例,两组均予常规基础治疗,中药组加用中药方剂,分别于就诊当日,治疗7,14 d及3个月后观察大脑中动脉流速及神经功能缺损变化、生活能力状态等。结果 :同组内比较,两组大脑中动脉流速较前均有下降,NIHSS评分较治疗前均有显著下降,同时Barthel指数较前均显著升高,差异有统计学意义(P<0.05);中药组大脑中动脉流速、NIHSS评分、Barthel指数等与单纯西药组比较差异均具有统计学意义(均P<0.05)。结论 :加用中药组治疗大脑中动脉狭窄的脑梗死患者临床疗效明显优于单西药治疗,大脑中动脉灌注显著改善。 展开更多
关键词 大脑中动脉狭窄 痰瘀阻络:血流速度
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Intermittent blood flow restriction does not reduce atrophy following anterior cruciate ligament reconstruction 被引量:15
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作者 Erik Iversen Vibeke Rostad Arne Larmo 《Journal of Sport and Health Science》 SCIE 2016年第1期115-118,共4页
Background:A previous study has reported a 50% reduction in disuse atrophy of the quadriceps during the first 14 days after anterior cruciate ligament(ACL) reconstruction.A follow-up trial is needed to confirm these p... Background:A previous study has reported a 50% reduction in disuse atrophy of the quadriceps during the first 14 days after anterior cruciate ligament(ACL) reconstruction.A follow-up trial is needed to confirm these promising results.The present study aims to investigate the effect of an occlusion stimulus on quadriceps atrophy after ACL reconstruction.Methods:A total of 24 subjects participated in the study.They were randomized into two groups.Starting the 2nd day after surgery,the occlusion group received an occlusion stimulus for 5 min,followed by removal of the occlusive pressure for 3 min.This was repeated five times in one training session,twice daily.During the period of occlusive stimulus,the subjects performed 20 low load exercises for the quadriceps.The control group followed the same exercise protocol,but without the occlusion stimulus.Changes in quadriceps anatomical cross section area(ACSA) were measured using axial magnetic resonance(MR) images at 40% and 50% of the length of the femur.Results:Both groups had a significant reduction of quadriceps ACSA from 2 days before surgery to 16 days after surgery.During the intervention period,the occlusion group lost 13.8% ± 1.1%(mean ± SEM) and the control group lost 13.1% ± 1.0% of their quadriceps ACSA,respectively.There was no significant difference between the occlusion and control groups with regards to atrophy of the quadriceps muscles.Conclusion:In conflict with other studies using a similar protocol,application of blood flow restriction the first 14 days after ACL reconstruction did not reduce quadriceps ACSA muscle atrophy measured by MR in a population of athletes. 展开更多
关键词 ACL reconstruction Ascular occlusion Hypoxia ischemia Quadriceps atrophy
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Hemorrhoids:From basic pathophysiology to clinical management 被引量:82
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作者 Varut Lohsiriwat 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第17期2009-2017,共9页
This review discusses the pathophysiology,epidemiology,risk factors,classification,clinical evaluation,and current non-operative and operative treatment of hemorrhoids.Hemorrhoids are defined as the symptomatic enlarg... This review discusses the pathophysiology,epidemiology,risk factors,classification,clinical evaluation,and current non-operative and operative treatment of hemorrhoids.Hemorrhoids are defined as the symptomatic enlargement and distal displacement of the normal anal cushions.The most common symptom of hemorrhoids is rectal bleeding associated with bowel movement.The abnormal dilatation and distortion of the vascular channel,together with destructive changes in the supporting connective tissue within the anal cushion,is a paramount finding of hemorrhoids.It appears that the dysregulation of the vascular tone and vascular hyperplasia might play an important role in hemorrhoidal development,and could be a potential target for medical treatment.In most instances,hemorrhoids are treated conservatively,using many methods such as lifestyle modification,fiber supplement,suppositorydelivered anti-inflammatory drugs,and administration of venotonic drugs.Non-operative approaches include sclerotherapy and,preferably,rubber band ligation.An operation is indicated when non-operative approaches have failed or complications have occurred.Several surgical approaches for treating hemorrhoids have been introduced including hemorrhoidectomy and stapled hemorrhoidopexy,but postoperative pain is invariable.Some of the surgical treatments potentially cause appreciable morbidity such as anal stricture and incontinence.The applications and outcomes of each treatment are thoroughly discussed. 展开更多
关键词 Hemorrhoids Pathophysiology Treatment Management Outcome
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A Mathematical Model for Pulsating Flow of Ionic Fluid under an Axial Electric Field: EMF Effect on Blood Flow
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作者 Mona A. EI-Naggar Medhat A. Messiery 《Journal of Physical Science and Application》 2012年第4期61-70,共10页
The present work introduces a mathematical model for ionic fluid that flows under the effect of both pulsating pressure and axial electromagnetic field. The fluid is treated as a Newtonian fluid applying Navier-Stokes... The present work introduces a mathematical model for ionic fluid that flows under the effect of both pulsating pressure and axial electromagnetic field. The fluid is treated as a Newtonian fluid applying Navier-Stokes equation. The fluid is considered as a neutral mixture of positive and negative ions. The effect of axial electric field is investigated to determine velocity profiles. Hydroelectric equation of the flow is deduced under dc and ac external electric field. Hence the effect of applied frequency (0-1 GHz) and amplitude (10-350 V/m) is illustrated. The ultimate goal is to approach the problem of EMF field interaction with blood flow. The applied pressure waveform is represented as such to simulate the systolic-diastolic behavior. Simulation was carried out using Maple software using blood plasma parameters; hence velocity profiles under various conditions are reported. 展开更多
关键词 Newtonian fluid navier-stokes ionic fluid blood flow electric field hydroelectric flow simulation velocity profiles EMF bioeffects.
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Deformation and Motion of a Red Blood Cell in a Shear Flow Simulated by a Lattice Boltzmann Model 被引量:1
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作者 SHI Juan QIU Bing TAN Hui-Li 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第6期1117-1120,共4页
A lattice Boltzmann model is presented to simulate the deformation and motions of a red blood cell (RBC) in a shear flow. The curvatures of the membrane of a static RBC with different chemical potentiM drops calcula... A lattice Boltzmann model is presented to simulate the deformation and motions of a red blood cell (RBC) in a shear flow. The curvatures of the membrane of a static RBC with different chemical potentiM drops calculated by our model agree with those computed by a shooting method very well. Our simulation results show that in a shear flow, biconcave RBC becomes highly flattened and undergoes tank-treading motion. With intrinsically parallel dynamics, this lattice Boltzmann method is expected to find wide applications to both single and multi-vesicles suspension as well as complex open membranes in various fluid flows for a wide range of Reynolds numbers. 展开更多
关键词 red blood cells biconcave lattice Boltzmann method
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A comparative study on therapeutic method of traumatic epidural hematoma 被引量:1
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作者 李松 张恒 +2 位作者 焦庆芳 刘展 毛伯镛 《Chinese Journal of Traumatology》 CAS 2007年第3期166-170,共5页
Objective:To explore the therapeutic methods, surgical indications and clinical practice of minimally invasive surgery on traumatic epidural hematoma(EDH). Methods:Retrospective study was made on 135 patients with tra... Objective:To explore the therapeutic methods, surgical indications and clinical practice of minimally invasive surgery on traumatic epidural hematoma(EDH). Methods:Retrospective study was made on 135 patients with traumatic EDH admitted into our hospital from June 2002 to August 2005.Sixty-five patients were treated with mini-invasive negative pressure drainage (treatment group),70 patients with comparable condition used traditional craniotomy(control group).The mean time of operation,average days in hospital,expenditure and prognosis of two groups were recorded and analyzed. Results:There was no significant difference in therapeutic efficacy between two groups.Patients in treatment group had a shorter hospital stay and less expenditure than those in control group. Conclusion:Mini-invasive negative pressure drainage is simple,effective,economical and applicable to some traumatic EDH patients. 展开更多
关键词 HEMATOMA Epidural space Drainage
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Lattice Boltzmann method simulating hemodynamics in the three-dimensional stenosed and recanalized human carotid bifurcations
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作者 KANG XiuYing 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2015年第1期117-124,共8页
By using the lattice Boltzmann method(LBM)pulsatile blood flows were simulated in three-dimensional moderate stenosed and recanalized carotid bifurcations to understand local hemodynamics and its relevance in arterial... By using the lattice Boltzmann method(LBM)pulsatile blood flows were simulated in three-dimensional moderate stenosed and recanalized carotid bifurcations to understand local hemodynamics and its relevance in arterial atherosclerosis formation and progression.The helical flow patterns,secondary flow and wall dynamical pressure spatiotemporal distributions were investigated,which leads to the disturbed shear forces in the carotid artery bifurcations.The wall shear stress distributions indicated by time-averaged wall shear stress(TAWSS),oscillatory shear index(OSI),and the relative residence time(RRT)in a cardiac cycle revealed the regions where atherosclerotic plaques are prone to form,extend or rupture.This study also illustrates the point that locally disturbed flow may be considered as an indicator for early atherosclerosis diagnosis.Additionally the present work demonstrates the robust and highly efficient advantages of the LBM for the hemodynamics study of the human blood vessel system. 展开更多
关键词 ATHEROSCLEROSIS carotid bifurcation lattice Boltzmann method wall shear stress helical flow pattern
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A HYDROMAGNETIC MATHEMATICAL MODEL FOR BLOOD FLOW OF CARREAU FLUID 被引量:2
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作者 NAJMA SALEEM T. HAYAT A. ALSAEDI 《International Journal of Biomathematics》 2014年第1期173-186,共14页
This paper constructs a mathematical model for blood flow through an artery with mild stenosis. Constitutive equations for Carreau fluid are employed in the mathematical modeling. Analysis has been carried out in the ... This paper constructs a mathematical model for blood flow through an artery with mild stenosis. Constitutive equations for Carreau fluid are employed in the mathematical modeling. Analysis has been carried out in the presence of constant magnetic field. Symmetric and asymmetric shapes of stenosis are taken. Governing flow model is computed for the series solution. Whe flow quantities of interest, for instance, axial velocity, pressure gradient, pressure drop, impedance and shear stress at the walls of stenotic artery are described for various pertinent parameters entering into the problem. 展开更多
关键词 Carreau fluid magnetic field stenotic artery.
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Hydromagnetic Blood Flow of Sisko Fluid in a Non-uniform Channel Induced by Peristaltic Wave
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作者 A.Zeeshan M.M.Bhatti +1 位作者 N.S.Akbar Y.Sajjad 《Communications in Theoretical Physics》 SCIE CAS CSCD 2017年第7期103-110,共8页
In this paper, a smooth repetitive osciflating wave traveling down the elastic walls of a non-uniform two- dimensional channels is considered. It is assumed that the fluid is electrically conducting and a uniform magn... In this paper, a smooth repetitive osciflating wave traveling down the elastic walls of a non-uniform two- dimensional channels is considered. It is assumed that the fluid is electrically conducting and a uniform magnetic field is perpendicular to flow. The Sisko fluid is grease thick non-Newtonian fluid can be considered equivalent to blood. Taking long wavelength and low Reynolds number, the equations are reduced. The analytical solution of the emerging non-linear differential equation is obtained by employing Homotopy Perturbation Method (HPM). The outcomes for dimensionless flow rate and dimensionless pressure rise have been computed numerically with respect to sundry concerning parameters amplitude ratio , Hartmann number M, and Sisko fluid parameter bl. The behaviors for pressure rise and average friction have been discussed in details and displayed graphically. Numerical and graphical comparison of Newtonian and non-Newtonian has also been evaluated for velocity and pressure rise. It is observed that the magnitude of pressure rise is maximum in the middle of the channel whereas for higher values of fluid parameter it increases. Further, it is also found that the velocity profile shows converse behavior along the walls of the channel against multiple values of fluid parameter. 展开更多
关键词 blood flow peristaltic flow Sisko fluid non-uniform channel
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Oscillatory blood flow through a capillary in presence of thermal radiation 被引量:1
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作者 A. Sinha G. C. Shit 《International Journal of Biomathematics》 2015年第1期181-199,共19页
This paper deals with the theoretical investigation of a fundamental problem of magne- tohydrodynamic (MHD) flow of blood in a capillary in the presence of thermal radiation and chemical reaction. The unsteadiness i... This paper deals with the theoretical investigation of a fundamental problem of magne- tohydrodynamic (MHD) flow of blood in a capillary in the presence of thermal radiation and chemical reaction. The unsteadiness in the flow and temperature fields is caused by the time-dependence of the stretching velocity and the surface temperature. The fluid is considered to be non-Newtonian, whose flow is governed by the equation of a third-order fluid. The problem is first reduced to solving a system of coupled nonlinear differential equations involving several parameters. Considering blood as an electrically conducting fluid and using the present analysis, an attempt is made to compute some parameters of the blood flow by developing a suitable numerical method and by devising an appropri- ate finite difference scheme. The computational results are presented in graphical form, and thereby some theoretical predictions are made with respect to the hemodynamical flow of the blood in a hyperthermal state under the action of a magnetic field. Com- putational results for the variation in velocity, temperature, concentration, skin-friction coefi^icient, Nusselt number and Sherwood number are presented in graphical/tabular form. Since the study takes care of thermal radiation in blood flow, the results reported here are likely to have an important bearing on the therapeutic procedure of hyperthermia, particularly in understanding blood flow and heat transfer in capillaries. 展开更多
关键词 Third-order fluid stretching wall thermal radiation oscillatory motion
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