نتایج جستجو برای: cerebrovascular system
تعداد نتایج: 2306407 فیلتر نتایج به سال:
the application of e-learning systems - as one of the solutions to the issue of anywhere and anytime learning – is increasingly spreading in the area of education. content management - one of the most important parts of any e-learning system- is in the concern of tutors and teachers through which they can obtain means and paths to achieve the goals of the course and learning objectives. e-learn...
Plasma Renin Activity in Acute Cerebrovascular Disease: Preliminary Communication • A preliminary study of plasma renin activity was made in 22 patients with acute cerebrovascular disease. Eight of 12 patients with intracranial hemorrhage had plasma renin activity values above the normal range of 30 to 330 ng/100 ml plasma, but only one of ten patients with ischemic cerebrovascular disease had ...
Influence of cerebrovascular disease on brain networks in prodromal and clinical Alzheimer’s disease
Network-sensitive neuroimaging methods have been used to characterize large-scale brain network degeneration in Alzheimer's disease and its prodrome. However, few studies have investigated the combined effect of Alzheimer's disease and cerebrovascular disease on brain network degeneration. Our study sought to examine the intrinsic functional connectivity and structural covariance network change...
DEVELOPMENT OF AN fMRI COMPATIBLE LOWER BODY NEGATIVE PRESSURE SYSTEM by Pratap Singh Kunwar The lower body negative pressure (LBNP) system provides a controlled, measured orthostatic stress to the cardiovascular system, which can be used with a magnetic resonance imaging (MRI) machine to study cardiovascular and cerebrovascular responses to graded LBNP. In the past, even though functional MRI ...
during the past two decades, a variety of serum or cerebrospinal fluid (csf) biochemical markers in daily clinical practice have been recommended to diagnose and monitor diverse diseases or pathologic situations. it will be essential to develop a panel of biomarkers, to be suitable for evaluation of treatment efficacy, representing distinct phases of injury and recovery and consider the tempora...
objective: to investigate about frequency of different subtypes of stroke in south of iran methods: this is a retrospective, single-center study conducted at namazi hospital, shiraz, south of iran. age, sex, length of hospitalization and mortality of stroke patients were recorded by reviewing hospital medical records. results: 16 351 patients (53.6% male, 46.4%female) were recruited. isch...
Background: Hyperthyroidism as a risk factor for stroke is not conclusive. There are no definite data on the relationship between ischemic cerebrovascular injury and hyperthyroidism. This study was designed to define whether the outcomes of post-ischemic stroke injury are influenced by chronic hyperthyroidism. Methods: Two groups of hyperthyroid (HT) and control euthyroid rats of equal numbers ...
Background and Aim: Diabetes Mellitus (DM) increases the risk of ischemic cerebrovascular diseases two- to four folds as compared to people without diabetes. Macrovascular disease is the leading cause of death among patients with diabetes mellitus. Transcranial Doppler (TCD) is a noninvasive procedure used to assess the hemodynamic changes in Middle Cerebral Artery (MCA). Knowing the influe...
BACKGROUND Older-generation anticonvulsants that highly induce cytochrome P450 enzyme system activity produce metabolic abnormalities that may increase cardiovascular risk. The objective of this study was to evaluate the risk of ischemic cerebrovascular and coronary events in adult new users of anticonvulsants that highly induce cytochrome P450 activity compared with other anticonvulsant agents...
background: changes in the lipid profile have been suggested as a risk factor for developing ischemic stroke. their role in intra-cerebral hemorrhage, however, is not clear. the present study was designed to evaluate the lipid profile levels of patients who had experienced an acute stroke during the first 24-hour and to compare these levels in different patients suffering from the stroke, eithe...
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