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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Book ChapterDOI
Differential Effects of Pentobarbital, Ketamine Hydrochloride, Enflurane, and Halothane on Cerebrospinal Fluid Dynamics
TL;DR: Understanding of the mechanisms by which anesthetic agents influence intracranial pressure (ICP) and fluid dynamics has improved considerably as a result of intensive research during the past 30 years.
Journal ArticleDOI
The effect of body position change on noninvasively acquired intracranial pulse waves
Andrea Boraschi,Andreas Spiegelberg,Fariba Karimi,Kevin J. Graf,Aryan Fallahi,Esra Neufeld,Niels Kuster,Vartan Kurtcuoglu +7 more
TL;DR: In this article , a capacitively acquired signal (hereinafter referred to as W) originating from dynamic changes of the head's dielectric properties was found to contain information related to craniospinal compliance.
Journal ArticleDOI
Noninvasive Monitoring of Intracranial Pulse Waves
TL;DR: In this article , the authors designed a device and electrodes for noninvasive measurement of periodic changes of the dielectric properties of the human head, which can serve as the basis for deriving surrogates of craniospinal compliance noninvasively.
Book ChapterDOI
Anterior Fontanelle Pressure Values in Normal Young Children of Various Ages
TL;DR: This work investigated a number of healthy infants of various ages to establish a positive relationship between intracranial pressure (ICP) and age and wondered whether with this non-invasive method also an age/pressure relationship could be established.
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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