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
Development of a theoretical framework for analyzing cerebrospinal fluid dynamics
TL;DR: This approach is able to directly incorporate the diverse measurements obtained by clinicians to better elucidate intracranial dynamics and progression to disorder and provides a framework to guide the type and location of measurements and also a way to interpret the resulting data within a fundamental fluid physics analysis.
Journal ArticleDOI
Noninvasive assessment of intracranial elastance and pressure in spontaneous intracranial hypotension by MRI.
Yi-Hsin Tsai,Hung-Chieh Chen,Hsin Tung,Yi-Ying Wu,Hsian-Min Chen,Kuan-Jung Pan,Da-Chuan Cheng,Jeon-Hor Chen,Clayton Chi-Chang Chen,Jyh-Wen Chai,Wu-Chung Shen +10 more
TL;DR: MR‐based intracranial pressure (MR‐ICP) may be able to detect changes of intrac Cranial elastance and pressure.
Book ChapterDOI
A History of Neuroanesthesia
TL;DR: Many countries practiced trephination from 10,000 BCE, and Cocaine spat in the wound may have minimized pain in Peru.
Journal ArticleDOI
Technical communique: A nonlinear observer for on-line estimation of the cerebrospinal fluid outflow resistance
TL;DR: A nonlinear observer is designed which provides on-line estimates of the outflow resistance of the human cerebrospinal fluid system, to the best of the knowledge the first method to do so.
Journal ArticleDOI
Variations in the cerebrospinal fluid dynamics of the American alligator ( Alligator mississippiensis )
Bruce A. Young,James D. Adams,Jonathan M. Beary,Kent-Andre Mardal,Robert Schneider,Tatyana Kondrashova +5 more
TL;DR: In this paper, pressure transducers were surgically implanted into the cranial subarachnoid space of 12 sub-adult American alligators; CSF pressure and pulsatility were monitored along with EKG and the exhalatory gases.
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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