Journal ArticleDOI
Compartmental analysis of compliance and outflow resistance of the cerebrospinal fluid system
TLDR
The distribution of compliance and outflow resistance between cerebral and spinal compartments was measured in anesthetized, ventilated cats by analysis of the cerebrospinal fluid (CSF) pressure response to changes in CSF volume.Abstract:
✓ The distribution of compliance and outflow resistance between cerebral and spinal compartments was measured in anesthetized, ventilated cats by analysis of the cerebrospinal fluid (CSF) pressure response to changes in CSF volume. Cerebral and spinal compartments were isolated by inflating a balloon positioned epidurally at the level of C-6. The change of CSF volume per unit change in pressure (compliance) and change of CSF volume per unit of time (absorption) were evaluated by inserting pressure data from the experimental responses into a series of equations developed from a mathematical model. It was found that 68% of total compliance is contributed by the cerebral compartment while the remaining 32% is contained within the spinal axis. The cerebral compartment accounted for 84% of total CSF absorption. The mechanism for spinal absorption appears to be similar in that no differences were obvious on the basis of pressure dynamics.read more
Citations
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Journal ArticleDOI
Mechanism of increased cerebrospinal fluid pressure with thoracic aortic occlusion.
Giancarlo Piano,Bruce L. Gewertz +1 more
TL;DR: To better understand the relationship between cerebrospinal fluid pressure, central venous pressure, and the compliance of the cerebro Spinal fluid compartment, 12 anesthetized dogs subjected to thoracic aortic occlusion were studied.
Journal ArticleDOI
The Importance of the Intrathecal Infusion Test in the Diagnostic of Normal-Pressure Hydrocephalus
Ullrich Meier,Philip Bartels +1 more
TL;DR: The computer- aided infusion test allows a reliable differentiation between patients with NPH and those with cerebral atrophy.
Book ChapterDOI
The Mechanism of ICP Reducing Effect of Mannitol
TL;DR: The mechanism of the ICP reducing effect of mannitol is reexamine and delineate using the mathematical method to estimate the CSF dynamics and intracranial compliance, the quantitative vasogenic edema model, and specific gravimetric technique to measure the brain water content, without disturbing the semiclosed condition of the cranial cavity in cats.
Journal ArticleDOI
How should primary aqueductal stenosis in adults be treated? A review.
TL;DR: Endoscopic third ventriculostomy (ETV), re‐establishing a physiological route of CSF dynamics, has become the treatment of choice for AS in most neurosurgical centers and there are today no common criteria for patient selection to either ETV or ventriculo‐peritoneal shunt surgery.
Journal ArticleDOI
Physiological Monitoring of the Severe Traumatic Brain Injury Patient in the Intensive Care Unit
TL;DR: Physiological monitoring of the brain after TBI and the emerging field of neurocritical care bioinformatics are discussed.
References
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Journal ArticleDOI
A simple constant‐infusion manometric test for measurement of CSF absorption: I. Rationale and method
Robert Katzman,Francis Hussey +1 more
Journal ArticleDOI
The pressure-volume curve of the cerebrospinal fluid space in dogs
TL;DR: The cerebrospinal fluid pressure‐volume curve was determined by measuring the pressure response to rapid injection of fluid into the cisterna magna of dogs, by means of a constant flow infusion pump.
Journal ArticleDOI
Cranial and spinal components of the cerebrospinal fluid pressure‐volume curve
Jan Löfgren,Nicolaus N. Zwetnow +1 more
TL;DR: A quantitative analysis of the contributions of the cranial and spinal compartments to the cerebrospinal fluid pressure‐volume curve was made using dogs using dogs to represent the effects on the fluid pressure of forced alterations in the volume of the intracranial vascular bed.
Journal ArticleDOI
The mechanism of the change in cerebrospinal fluid pressure following an induced change in the volume of the fluid space.
Henry W. Ryder,Frank F. Espey,Fariss D. Kimbell,Ernest J. Penka,Adolf Rosenauer,Boris Podolsky,Joseph P. Evans +6 more
Journal ArticleDOI
Pressure-Volume Considerations in Infantile Hydrocephalus
Kenneth Shulman,Anthony Marmarou +1 more
TL;DR: Evidence of normal ventricular pressure does not exclude the possibility of progressive hydrocephalus, and increased pressure is likely to occur for quite long periods while the hydrocephalic infant is engaged in normal infantile activities.
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