Emerging views of how changes in blood pressure influence cerebral blood flow
نویسندگان
چکیده
منابع مشابه
comparison of blood flow velocity changes in posterior cerebral artery measured with transcranial doppler sonography in migraineurs with visual aura and normal persons after photostimulation
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15 صفحه اولCerebral Blood Flow Influence of Changes in Blood Pressure on Cerebral Perfusion and Oxygenation
Cerebral autoregulation (CA) is a critical process for the maintenance of cerebral blood flow and oxygenation. Assessment of CA is frequently used for experimental research and in the diagnosis, monitoring, or prognosis of cerebrovascular disease; however, despite the extensive use and reference to static CA, a valid quantification of “normal” CA has not been clearly identified. While controlli...
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Influence of Changes in Blood Pressure on Cerebral Oxygenation: Role of Skin Blood Flow? To the Editor: We read with interest the report from Lucas et al1 in the recent issue of Hypertension. We agree with the findings presented on cerebral blood flow with transcranial ultrasound Doppler, but we propose an alternative interpretation of the cerebral oxygenation data. As pointed out by the author...
متن کاملAutoregulation of cerebral blood flow: influence of the arterial blood pressure on the blood flow through the cerebral cortex.
Until fairly recently it 'was believed that cerebral blood flow followed more or less passively the mean arterial blood pressure, and the stability of the cerebral circulation under physiological conditions reflected only the relative constancy of the arterial pressure maintained by the homeostatic pressor reflex mechanism' (Sokoloff, 1959). That there might also be an intrinsic regulation of c...
متن کاملCerebral blood flow is regulated by changes in blood pressure and in blood viscosity alike.
There is still considerable controversy regarding the influence of blood viscosity upon CBF. We have measured CBF with microspheres in 23 cats. Autoregulation was disturbed in the left caudate nucleus by microsurgical occlusion of the left middle cerebral artery. Induced hypertension or hypotension was used and i.v. mannitol (1 g/kg) administered. In all cats blood viscosity decreased an averag...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 2018
ISSN: 0022-3751
DOI: 10.1113/jp276800