Authors: Z. Novák Authors‘ workplace: Neurochirurgická klinika LF MU a FN u sv. Anny, Brno Published in: Cesk Slov Neurol N 2007; 70/103(1): 85-87 Category: Short Communication
Podporováno grantem IGA MZ ČR NR/7805-2.
During an endoscopic surgery for a uni-ventricular hydrocephalus, a membranous lobe of chorioidal plexus appeared within the intraventricular opening that, as a safety valve, controlled by turns the liquor flow through Monro´s foramen. This observation became the base for constructing a proper mathematical model.
It resulted in the original knowledge that the liquor motion is of two different types of nature: a slow continuous motion and much faster flutter among three upper ventricles: two lateral ones and the third ventricle connected with them.
Biological importance of this motion probably consists in the fact that it absorbs pulsatory rushes of blood into the brain thus securing the optimal environment for the nervous system. This may be the main function of the liquor space within the head.
Key-words: Safe-valve phenomenon, endoscopic observations, mathematical model, liquor flutter
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