نتایج جستجو برای: cerebral arteries
تعداد نتایج: 232186 فیلتر نتایج به سال:
introduction rhino-orbito-cerebral mucormycosis is a progressive angioinvasive fungal disorder which almost always complicates immunocompromised patients. case presentation we described a case of fulminant rhino-orbito-cerebral mucormycosis in a 65-year-old woman, who presented with progressive neurological deficits due to involvement of orbital apex and the central nervous system by local inva...
background: although the risk factors of ischemic strokes are well defined, there is slight information about their relations with the etiologies of ischemic strokes. this study investigated the distribution of ischemic stroke risk factors and their connections to diverse etiologies of cerebrovascular attack (cva) and specific ischemic regions of brain. methods: in this cross sectional study , ...
background: stroke is a multifactorial disorder, the most common cause being arterial occlusion. transcranial doppler ultrasonography (tcd) is a common non-invasive method available for assessment the arterial blood flow of the brain. objective: assessment the hemodynamic parameters of cerebral arteries, using tcd device in patients suffering ischemic stroke. materials and methods: this descrip...
Purpose: The circle of willis is responsible for blood supply of brain, which may suffer from anatomical variations. These disturbances can lead to aneurysm or even arterial rupture. The purpose of this study was to evaluate the anatomical structure of the cerebral arteries forming the circle of willis in adult cadavers. Also, cerebral versus non- cerebral versus non-cerebral arterial walls wer...
Background: β-thalassemia, a severe form of anemia, is an inherited blood disorder characterized by growth retardation, splenomegaly, and bone abnormalities. Complications related to treatment-induced iron overload also affect the quality of life of patients with major β-thalassemia. Some recent studies indicated cerebral hemodynamic disorders and increased risk of stroke in these patients. The...
While a wide array of pathological changes occur in cerebral arteries following subarachnoid hemorrhage (SAH), the most consistent is endothelial damage. Since the endothelium normally modulates reflexes that influence vascular tone, any damage to it may represent a significant contributor to cerebral vasospasm following SAH. This experimental study investigates the correlation between end...
while a wide array of pathological changes occur in cerebral arteries following subarachnoid hemorrhage (sah), the most consistent is endothelial damage. since the endothelium normally modulates reflexes that influence vascular tone, any damage to it may represent a significant contributor to cerebral vasospasm following sah. this experimental study investigates the correlation between endothel...
P-247: To Evaluate The Oxytocin Effect on Maternal-Fetal Circulation during Termination of Pregnancy
Background: To evaluate the effect of oxytocin on blood circulation of fetus and uterus by Doppler ultrasound. Materials and Methods: Forty six pregnant women were assigned to receive for indication of delivery intravenous oxytocin. Doppler velocitometry before and after administration of oxytocin for umbilical,middle cerebral artery and uterine artery were performed, and Pulsatility index (PI)...
Variations in the cerebral arterial circle (CAC) correlate with incidence of some cerebrovascular diseases and must be considered during surgical operations (1, 2). It also seems that different distribution of variations of the CAC is related to the race. This issue may partially explain the different incidences of some of the cerebrovascular diseases in different ethnic or racial groups (3-5)....
conclusion following splenectomy, thrombocytosis can predispose the patients to an increase in cerebral blood velocities more than respected with anemia. but by transcranial doppler ultrasonography no evidence of significant stenosis were found in intracerebral arteries to conclude that the beta-thalassemia major patients were more prone to the development of stroke secondary to this abnormalit...
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