Document Detail

A new interpretation of the origin of extradural space negative pressure.
MedLine Citation:
PMID:  6821625     Owner:  NLM     Status:  MEDLINE    
The negative pressure in the extradural space is the result of the interaction of hydrostatic forces created between the vertebral canal (a stiff-walled cylinder) and the dura mater, with its content of cerebro-spinal fluid (CSF), which behaves as a cylinder that can collapse according to the position of the subject. In order to corroborate this hypothesis, we have designed a model formed by a sealed, water-filled, glass cylinder ("vertebral canal"). In the interior there is a collapsible, non-distendible, water-filled cylinder ("dural sac"), in free communication with a reservoir which represents the CSF contained in the cranial cavity. Changes in the position of the model produce subatmospheric pressure in the space between both cylinders ("extradural space"), as happens in man.
P Andrade
Related Documents :
21266925 - Spatiotemporal volumetric analysis of dynamic plantar pressure data.
21215975 - Response of single benthic metrics and multi-metric methods to anthropogenic pressure g...
11849565 - Cerebrospinal fluid outflow resistance in sheep: impact of blocking cerebrospinal fluid...
7912045 - Pharmacokinetics and pharmacodynamics of intraspinal dexmedetomidine in sheep.
1917745 - Modulation of vascular reactivity to serotonin in the dog lung.
22336905 - Early life stress and blood pressure levels in late adulthood.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  British journal of anaesthesia     Volume:  55     ISSN:  0007-0912     ISO Abbreviation:  Br J Anaesth     Publication Date:  1983 Jan 
Date Detail:
Created Date:  1983-03-17     Completed Date:  1983-03-17     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0372541     Medline TA:  Br J Anaesth     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  85-8     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Epidural Space / physiology*
Models, Biological
Models, Structural
Spinal Canal / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Effects of low intermittent concentrations of nitrous oxide on the developing rat fetus.
Next Document:  Serum dopamine beta hydroxylase in children with neuroblastoma.