نتایج جستجو برای: radial collateral artery
تعداد نتایج: 280412 فیلتر نتایج به سال:
Arteriogenesis requires growth of pre-existing arteriolar collateral networks and determines clinical outcome in arterial occlusive diseases. Factors responsible for the development of arteriolar collateral networks are poorly understood. The Notch ligand Delta-like 4 (Dll4) promotes arterial differentiation and restricts vessel branching. We hypothesized that Dll4 may act as a genetic determin...
Coronary collaterals are an alternative source of blood supply to myocardium jeopardized by ischaemia. In comparison with other species, the human coronary collateral circulation is very well developed. Among individuals without coronary artery disease (CAD), there are preformed collateral arteries preventing myocardial ischaemia during a brief vascular occlusion in 20-25%. Determinants of such...
the purpose of this research is to numerically investigate the interaction of pulsatile flow of blood with an axisymmetric artery in various percentages of stenosis. the carreau non-newtonian model and the generalized maxwell rheological model were used to model the blood fluid and the viscoelastic wall of arterial, respectively. the innovation of the present research is modeling of viscoelasti...
BACKGROUND The prognostic relevance of the collateral circulation is still controversial. The goal of this study was to assess the impact on survival of quantitatively obtained, recruitable coronary collateral flow in patients with stable coronary artery disease during 10 years of follow-up. METHODS AND RESULTS Eight-hundred forty-five individuals (age, 62+/-11 years), 106 patients without co...
The radial artery usually arises from brachial artery and begins just below the inferior border of teres major. The present study focuses on the radial artery features which are the internal diameter and external diameter as well as thickness of wall and origin level of radial artery to give extensive data for physicians. Present study comprises a dissection of 68 upper limbs which is 34 cadave...
OBJECTIVE To assess the importance of genetic background for collateral artery development. METHODS AND RESULTS C57BL/6, BALB/c and 129S2/Sv mice were studied after femoral artery ligation by laser Doppler imaging, visible light oximetry, time-of-flight-magnetic resonance imaging, and treadmill testing; C57BL/6 and BALB/c also underwent electron paramagnetic resonance (EPR) oximetry, x-ray an...
Carotid artery disease is common and increases the risk of stroke. However, there is wide variability on the severity of clinical manifestations of carotid disease, ranging from asymptomatic to fatal stroke. The collateral circulation has been recognized as an important aspect of cerebral circulation affecting the risk of stroke as well as other features of stroke presentation, such as stroke p...
This study tests, the hypothesis that asymptomatic patients with hemodynamically significant internal carotid artery stenosis have a lower ipsilateral collateral cerebral vascular resistance and hence greater blood flow than their symptomatic cohorts. We measured internal carotid artery blood flow and cerebral perfusion pressures intraoperatively prior to and after carotid endarterectomy in 35 ...
A 6-year-old girl presented with a very large aneurysm of the distal branch middle cerebral artery( angular artery). There was previous history mild traumatic brain injury. The presentation happened more than 5 weeks after trauma an atypical visual complaint. She successfully treated by embolization and occlusion parental vessel. Recognizing pos is challenging in young child must be remembered ...
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