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
Arterial blood pressure vs intracranial pressure in normal pressure hydrocephalus.
TL;DR: Eide PK, Park E‐H, Madsen JR.
Journal ArticleDOI
Impact of cerebral perfusion pressure and autoregulation on intracranial dynamics: a modeling study.
Giulioni M,Mauro Ursino +1 more
TL;DR: The present study emphasizes the relevant role of CPP changes, elicited by acute arterial hypotension, in intracranial dynamics and estimates the pressure-volume index (PVI), which is significantly affected by the active response of cerebral vessels.
Journal ArticleDOI
Subtle deterioration in shunted childhood hydrocephalus. A biomechanical and clinical profile.
Arno Fried,Kenneth Shapiro +1 more
TL;DR: This study documents that subtle deterioration in shunted hydrocephalic children is accompanied by abnormally compliant pressure-volume curves and these children develop ventricular enlargement and neurological deterioration without acute episodic pressure waves.
Journal ArticleDOI
Management of Entrapped Temporal Horn by Temporal Horn to Prepontine Cistern Shunting
Clark C. Chen,Clark C. Chen,Ekkehard M. Kasper,Pascal O. Zinn,Pascal O. Zinn,Peter C. Warnke +5 more
TL;DR: This work describes an alternate approach involving temporal horn to prepontine cistern shunting followed by radiosurgery of the offending lesion in a 41-year-old woman with a history of meningiomatosis with progressive, incapacitating headache.
Journal ArticleDOI
Influences of brain tissue poroelastic constants on intracranial pressure (ICP) during constant-rate infusion
TL;DR: Based on the simulated infusion curves from the FE model, artificial neural network (ANN) was used to find an optimised parameter set that best fit the experimental curve, and confirmed the limitation of linear poroelasticity in modelling the transient constant-rate infusion.
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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