Document Detail

Effect of extracellular fluid volume expansion on avian lung fluid balance.
MedLine Citation:
PMID:  8441867     Owner:  NLM     Status:  MEDLINE    
We examined the effects of acute expansion of extracellular fluid volume (ECFV) on lung fluid balance and the ultrastructure of the pulmonary air-blood barrier in chickens (Gallus domesticus). We compared changes in extravascular lung water content (EVLW) to the sum of mean pulmonary capillary blood pressure and plasma protein osmotic pressure (tau c), as a measure of net intravascular filtration pressure (NIFP), produced by graded infusion of avian Ringer's solution. NIFP increased with each volume load largely as a result of decreased tau c resulting in progressive increase in EVLW. Progressive interstitial edema occurred with fluid accumulation restricted to the inter air capillary septa, sparing the gas exchanging regions of the air-blood barrier. This was associated with increased thickness of the septa and increased pulmonary capillary endothelial vesiculation. The effect of increased ECFV on pulmonary hemodynamics and lung fluid balance in Gallus is similar to that in mammals.
W J Weidner; L A Selna; D E McClure; D O DeFouw
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Respiration physiology     Volume:  91     ISSN:  0034-5687     ISO Abbreviation:  Respir Physiol     Publication Date:  1993 Jan 
Date Detail:
Created Date:  1993-03-31     Completed Date:  1993-03-31     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0047142     Medline TA:  Respir Physiol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  125-36     Citation Subset:  IM    
Department of Animal Physiology, University of California, Davis 95616.
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MeSH Terms
Blood Pressure
Blood Proteins
Chickens / physiology*
Extravascular Lung Water / physiology*
Lung / blood supply,  pathology,  physiopathology*
Microscopy, Electron
Osmotic Pressure
Pulmonary Gas Exchange / physiology
Reg. No./Substance:
0/Blood Proteins

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