Document Detail


Selected lobar injury after infusion of oleic acid.
MedLine Citation:
PMID:  511677     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A model of respiratory distress has been developed using sheep in which an isolated lobar injury is induced by infusion of oleic acid into a selected lobar artery. The directed insult permits acute and chronic phase study without the requirement of intensive pulmonary support. One hour after selective lobar injury the affected pulmonary venous oxygenation (Ppvo2) was reduced from greater than 310 to 66-90 Torr. Ppvo2 was most impaired at 48 h (40-55 Torr), but showed improvement by 96 h postinjury. Radionuclide estimates of lobar ventilation and perfusion demonstrated an initial fall in ventilation by 51% and corresponding 41% reduction in perfusion. By 24 h the depression of perfusion matched that of ventilation. Sequential light and scanning electron microscopy demonstrated the presence of a nonhomogeneous injury with areas of both complete parenchymal replacement by fibrous tissue and those with minimal architectural distortion. The selective injury model offers a useful methodology for the evaluation of the effects of various agents on the acute and chronic response of the lung to injury.
Authors:
B P Griffith; R G Carroll; R L Hardesty; R L Peel; H S Borovetz
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of applied physiology: respiratory, environmental and exercise physiology     Volume:  47     ISSN:  0161-7567     ISO Abbreviation:  J Appl Physiol Respir Environ Exerc Physiol     Publication Date:  1979 Oct 
Date Detail:
Created Date:  1980-02-15     Completed Date:  1980-02-15     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  7801242     Medline TA:  J Appl Physiol Respir Environ Exerc Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  706-11     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Acute Disease
Animals
Disease Models, Animal*
Humans
Lung / pathology*
Microscopy, Electron, Scanning
Oleic Acids*
Oxygen / blood
Respiration
Respiratory Distress Syndrome, Adult* / pathology,  physiopathology
Sheep*
Ventilation-Perfusion Ratio
Chemical
Reg. No./Substance:
0/Oleic Acids; 7782-44-7/Oxygen

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


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