Raised intracranial pressure and cerebral blood flow: 3. Venous outflow tract pressures and vascular resistances in experimental intracranial hypertension
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چکیده
منابع مشابه
Raised intracranial pressure and cerebral blood flow. 4. Intracranial pressure gradients and regional cerebral blood flow.
Intracranial pressure was raised by expansion of a supratentorial subdural ballon in anaesthetized baboons. Pressures were measured at several sites, both supratentorial and infratentorial, and cerebral blood flow was measured in each cerebral hemisphere separately. Pressures recorded from the right and left lateral ventricles corresponded closely throughout. Highly significant correlations wer...
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Update in Anaesthesia | www.worldanaesthesia.org CEREBRAl BlooD FloW The brain is unusual in that it is only able to withstand very short periods of lack of blood supply (ischaemia). This is because neurones produce energy (ATP) almost entirely by oxidative metabolism of substrates including glucose and ketone bodies, with very limited capacity for anaerobic metabolism. Without oxygen, energyde...
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Traumatic brain injury and stroke are both characterized by an ischemic core surrounded by a penumbra of low to hyperemic flows. The underperfused ischemic core is the focus of edema development, but the source of the edema fluid is not known. We hypothesized that flow of edema fluid into the tissue is derived from cerebral venous circulation pressure, which always exceeds intracranial pressure...
متن کاملRaised intracranial pressure and cerebral blood flow. 2. Supratentorial and infratentorial mass lesions in primates.
Changes in cerebral blood flow with increasing intracranial pressure were studied in anaesthetized baboons during expansion of a subdural balloon in one of two different sites. With an infratentorial balloon, cerebral blood flow bore no clear relation to intracranial pressure, but was linearly related to cerebral perfusion pressure. Apart from an initial change in some animals, cerebrovascular ...
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Increased intracranial pressure was induced in anaesthetized dogs by application of liquid nitrogen to the dura mater. Intracranial pressure and cerebral blood flow were measured, together with arterial blood pressure and arterial and cerebral venous blood gases.Carbon dioxide was administered intermittently to test the responsiveness of the cerebral circulation, and hyperbaric oxygen was deliv...
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ژورنال
عنوان ژورنال: Journal of Neurology, Neurosurgery & Psychiatry
سال: 1974
ISSN: 0022-3050
DOI: 10.1136/jnnp.37.4.392