نتایج جستجو برای: arterial stenosis

تعداد نتایج: 185057  

2017
Pil-Wook Chung Yu Sam Won

OBJECTIVE Spontaneous intracerebral hemorrhage (ICH) and ischemic stroke share common vascular risk factors such as aging and hypertension. Previous studies suggested that the rate of recurrent ICH and ischemic stroke might be similar after ICH. Presence of cerebral arterial stenosis is a potential risk factor for future ischemic stroke. This study investigated the prevalence and factors associ...

Journal: :Journal of clinical images and medical case reports 2022

Renal Artery Stenosis (RAS) occupies a prominent place among the secondary causes of arterial hypertension (HTA), in particular resistant.

2017
Nicos Labropoulos Apostolos K. Tassiopoulos

The pathogenesis of arterial stenosis or occlusion may be secondary to a wide spectrum of etiologic factors including atherosclerosis, thrombosis, embolic events of various etiology, fibromuscular dysplasia, vasculitidies, dissection, trauma, external compression, and vasospastic syndromes. Atherosclerosis is by far the most common cause of arterial stenosis. Atheromatic plaques have been ident...

شعیب, اشفق, قندهاری, کاویان,

Introduction: Atherosclerotic stenosis of carotid territory is the most common cause of ischemic stroke. A higher frequency of intracranial arterial stenosis has been reported in Africa and the Far East. Methods: 304 geriatric ischemic stroke patients admitted in Mackenzie hospital, Canada and the same number of geriatric ischemic stroke patients with similar sex ratio admitted in Valie-Asr ho...

ژورنال: پیاورد سلامت 2008
احمدی, سید حسین, جزایری, الهه, ربانی, عباس, عباس زاده قنواتی, منیر,

Background and Aim: Stroke is an important cause of morbidity and mortality in patients undergoing coronary artery bypass (CABG) surgery. There are various mechanisms that can cause prioperative strokes in patients undergoing CABG other than Carotid Artery disease. The goal of this study is to evaluate whether the presence of stenosis internal carotid artery (ICA) influences prioperative stroke...

Journal: :Fluids 2022

Arterial stenosis is a problem of immediate significance, as cardiovascular disease the number one leading cause death worldwide. Generally, study stenotic flow assumes smooth, curved and artery. However, real situation unlikely to present an infinitely smooth-surfaced arterial stenosis. Here, impact surface roughness on in was studied via computational fluid dynamics analysis. A patient-specif...

Journal: :Advances in Materials Science and Engineering 2021

The objective of this work is to prevent damage the arterial wall, using a theoretical model hyperelastic, anisotropic, and dynamic behavior human arterial. This mainly focused on properties hydrostatic stress evolution stenosis. stenosis in order understand effect size plaque deposit, loss elasticity increase density blood mechanical wall. great contribution shows us that increasing also incre...

Journal: :Arteriosclerosis 1989
R L Binns D N Ku

The mechanism by which atherosclerotic plaque causes stroke and transient ischemic attack is not fully understood. One possibility is that the plaque stenosis may set up hemodynamic conditions causing local arterial wall collapse. Arterial wall collapse may, in turn, affect the integrity of the plaque. This study was designed to define the effects of stenosis on the production of arterial wall ...

The analysis of solute and thermal dispersion in pulsatile flow through the stenotic tapered blood vessel is presented. The present problem is an extension of the work done by Ramana et al. who considered the time-invariant arterial wall. In the present model, the flexible nature of the arterial wall through the obstruction (called stenosis) is considered and it is achieved with the he...

Journal: :the journal of tehran university heart center 0
tavvos rahmani-cherati medical physics department, tarbiat modares university, tehran, iran. manijhe mokhtari-dizaji medical physics department, tarbiat modares university, tehran, iran. masome gity medical imaging center, imam khomeini hospital, medical sciences / university of tehran, tehran, ira

background: common carotid arterial stiffness can be assessed during carotid arterial ultrasonography, but its association with brachial stiffness, a well-defined cardiovascular risk factor, has not been clarified. the aim of this study was to examine the relationship between common carotid artery and brachial artery stiffness. methods: the static pressure-strain elastic modulus of the common c...

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