Changes of frequency spectrum of the CSF pulse wave caused by supratentorial epidural brain compression.
AUTOR(ES)
Takizawa, H
RESUMO
The frequency spectrum of the CSF pulse wave and amplitude transfer function from arterial to CSF pressure were estimated in the lateral ventricle and cisterna magna during the course of supratentorial epidural compression of brain in anaesthetised ventilated cats. Ventricular fluid pressure, the amplitude of spectral components of the CSF pulse and the amplitude of transfer function in the supratentorial compartment were increased in an exponential manner as epidural compression advanced. A transtentorial pressure gradient developed when epidural compression exceeded a critical level. Conduction of the CSF pulse through the tentorial hiatus decreased in an exponential manner when plotted against the transtentorial pressure gradient. Transtentorial conduction of the CSF pulse may serve as a sensitive indicator of the development of tentorial herniation.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1029120Documentos Relacionados
- Changes in nerve function and nerve fibre structure induced by acute, graded compression.
- Spectral analysis of the CSF pulse wave at different locations in the craniospinal axis.
- Elastic stresses and plastic deformations in 'Santa Clara' tomato fruits caused by package dependent compression.
- Intraocular pressure changes after peribulbar injections with and without ocular compression.
- The management of acute spinal cord compression.