Cerebral Blood Flow
Mostrando 13-24 de 431 artigos, teses e dissertações.
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13. Acute effects of physiotherapeutic respiratory maneuvers in critically ill patients with craniocerebral trauma
OBJECTIVE: To evaluate the effects of physiotherapeutic respiratory maneuvers on cerebral and cardiovascular hemodynamics and blood gas variables. METHOD: A descriptive, longitudinal, prospective, nonrandomized clinical trial that included 20 critical patients with severe craniocerebral trauma who were receiving mechanical ventilation and who were admitte
Clinics. Publicado em: 2013-09
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14. The correlation between lateralization of intracerebral hemorrhage in basal ganglia and handedness
PURPOSE: To investigate the correlation between lateralization of cerebral basal ganglia hemorrhage and handedness. METHODS: Medical records and computed tomography (CT) scans for 84 patients with primary hypertensive intracerebral hemorrhage (ICH) in basal ganglia were reviewed. Data of gender, age, handedness, and location of basal ganglia hematoma were st
Acta Cir. Bras.. Publicado em: 2013-03
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15. Hemodynamic effects of mannitol infusion in patients with acute intracerebral hemorrhage
PURPOSE: To evaluate hemodynamic effects of mannitol infusion in patients with acute intracerebral hemorrhage. METHODS: Thirty patients with acute intracerebral hemorrhage were enrolled. Transcranial doppler was used to detect variables of bilateral middle cerebral arteria (MCA) including mean velocity (Vm) and pulsitility index (PI) before and after125ml an
Acta Cir. Bras.. Publicado em: 2013-02
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16. Blockade of CXCR1/2 chemokine receptors protects against brain damage in ischemic stroke in mice
OBJECTIVE: Ischemic stroke may result from transient or permanent reductions of regional cerebral blood flow. Polymorphonuclear neutrophils have been described as the earliest inflammatory cells to arrive in ischemic tissue. CXCR1/2 receptors are involved in the recruitment of these cells. However, the contribution of these chemokine receptors during transie
Clinics. Publicado em: 2013
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17. Autorregulação encefálica durante manobra de preensão manual avaliada pela técnica de autorregressão de médias móveis através do Doppler transcraniano / Cerebral hemodynamic changes assessed by transcranial Doppler ultrasonography during handgrip maneuver
We investigated the effect of handgrip (HG) maneuver on time-varying estimates of dynamic cerebral autoregulation (CA), using the autoregressive moving average (ARMA) technique. Twelve healthy subjects were recruited to perform HG maneuver during 3 minutes with 30% of maximum contraction force. Cerebral blood flow velocity, end-tidal CO2 pressure (PETCO2), a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2012
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18. Efeito do exercício físico durante a gravidez sobre o fluxo sanguíneo feto-placentário e o crescimento fetal : ensaio controlado e aleatorizado / Effect of exercise during pregnancy on the blood flow fetal-placental and fetal growth : randomized controlled trials
Introduction: Fetal growth has always been one of the major concerns regarding the practice of exercise during pregnancy, with discussions on whether the redistribution of fetoplacental blood flow during physical exercise and the bypass of blood from the viscera to the muscles could lead to transitory fetal hypoxia. Objective: To study the. E effect of super
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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19. Alterações metabólicas cerebrais associadas aos fatores de risco cardiovascular: um estudo de tomografia por emissão de pósitron (PET) / Abnormalities on brain metabolism associated to cardiovascular risk factors: a positron emission tomography (PET) study
INTRODUCTION: Cardiovascular risk factors (CVRF) are known to affect cerebral blood flow, possibly contributing to cognitive decline and to the emergence of Alzheimers disease (AD), the commonest form of dementia. Positron emission tomography (PET) with 18-fluoro-2-deoxyglucose (18FFDG) has been widely used to demonstrate specific patterns of reduced brain g
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/12/2011
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20. Cerebral perfusion evaluation in animal models of hypertension using arterial spin labeling / Avaliação da perfusão sanguínea cerebral em modelos animais de hipertensão utilizando Arterial Spin Labeling
A hipertensão arterial é uma doença que aflinge mais de um quarto da população adulta mundial e mais da metade da população idosa. Ela é o principal fator de risco para doenças cerebrovasculares e o segundo fator de risco, após idade, para os acidentes vasculares cerebrais (AVC) hemorrágico e isquêmico. É também a principal causa de declínio c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/09/2011
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21. Should we definitively abandon prophylaxis for patent ductus arteriosus in preterm new-borns?
Although the prophylactic administration of indomethacin in extremely low-birth weight infants reduces the frequency of patent ductus arteriosus and severe intraventricular hemorrhage, it does not appear to provide any long-term benefit in terms of survival without neurosensory and cognitive outcomes. Considering the increased drug-induced reduction in renal
Clinics. Publicado em: 2011
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22. The modified 2VO ischemia protocol causes cognitive impairment similar to that induced by the standard method, but with a better survival rate
Permanent bilateral occlusion of the common carotid arteries (2VO) in the rat has been established as a valid experimental model to investigate the effects of chronic cerebral hypoperfusion on cognitive function and neurodegenerative processes. Our aim was to compare the cognitive and morphological outcomes following the standard 2VO procedure, in which ther
Publicado em: 2011
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23. The modified 2VO ischemia protocol causes cognitive impairment similar to that induced by the standard method, but with a better survival rate
Permanent bilateral occlusion of the common carotid arteries (2VO) in the rat has been established as a valid experimental model to investigate the effects of chronic cerebral hypoperfusion on cognitive function and neurodegenerative processes. Our aim was to compare the cognitive and morphological outcomes following the standard 2VO procedure, in which ther
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-12
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24. Assessment of blood flow in perforating arteries during intracranial aneurysm surgery with intraoperative videoangiography using indocyanine green / Avaliação do fluxo sanguíneo em artérias perfurantes durante a cirurgia de aneurismas intracranianos através da video-angiografia intra-operatória utilizando indocianina verde
Background. Perforating arteries are commonly involved during the surgical dissection and clipping of intracranial aneurysms. Occlusion of perforating arteries may be responsible for ischemic infarction and poor outcome. The goal of this study was to describe the usefulness of near-infrared indocyanine green videoangiography (ICGA) for the intraoperative ass
Publicado em: 2010