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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Dissertation
Imaging cerebrospinal fluid dynamics in idiopathic normal pressure hydrocephalus
TL;DR: The results do not support the use of aqueductal stroke volume for selecting patients for shunting, and diagnostic preoperative monitoring of MWA is used routinely and predicts a beneficial shunt response in patients with iNPH.
Book ChapterDOI
Intracranial Pressure Waveform: History, Fundamentals and Applications in Brain Injuries
TL;DR: This chapter will focus on the waveform of the ICP pulse (ICPwf), already observed since 1881, and for a long time not understood.
Book ChapterDOI
Numerical Cerebrospinal System Modeling in Fluid-Structure Interaction.
TL;DR: A numerical model of the cerebrospinal system taking into account cerebral ventricles, intracranial subarachnoid spaces, spinal canal and brain tissue in fluid-structure interactions is developed to highlight significant variations of stroke volumes under cardiac frequency variations only.
Proceedings ArticleDOI
Patient's specific modeling of the spinal canal hydrodynamics using bond graph technique and magnetic resonance imaging
Naresh Yallapragada,Noam Alperin +1 more
TL;DR: A noninvasive method of deriving the spinal canal compliance and its distribution is being developed and the model provides new information about the relative contribution sub segments of the canal to the overall spinal canal Compliance.
Journal ArticleDOI
Possibilities of CSF pressure diagnosis --a review--.
Janos Vajda,Emil Pásztor +1 more
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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A simple constant‐infusion manometric test for measurement of CSF absorption: I. Rationale and method
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