Document Detail

Effect of posture on extradural pressure.
MedLine Citation:
PMID:  6498046     Owner:  NLM     Status:  MEDLINE    
Extradural pressure was measured in the lateral and the supine positions in three groups of patients using the extradural catheter as a manometer. The groups consisted of 20 pregnant patients at or near term, 10 patients in the period after childbirth and 10 male surgical patients. In every patient, the extradural pressure in the supine position was greater than that in the lateral position. The mean extradural pressures in the lateral and the supine positions were similar in the three groups. It is suggested that the difference between the extradural pressures in the lateral and the supine positions is physiological and occurs irrespective of vena caval compression. Extradural pressure changes are probably the result of postural changes in the cerebrospinal fluid (CSF) pressure. The influence of CSF pressure on extradural pressure was confirmed further by measuring the extradural pressure in the prone position in five pregnant patients.
J L Shah
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  British journal of anaesthesia     Volume:  56     ISSN:  0007-0912     ISO Abbreviation:  Br J Anaesth     Publication Date:  1984 Dec 
Date Detail:
Created Date:  1985-01-14     Completed Date:  1985-01-14     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0372541     Medline TA:  Br J Anaesth     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1373-7     Citation Subset:  IM    
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MeSH Terms
Anesthesia, Epidural
Anesthesia, Obstetrical
Epidural Space / physiology*
Intracranial Pressure
Labor, Obstetric
Middle Aged
Spinal Canal / physiology*
Vena Cava, Inferior / physiology

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