Document Detail

Characterization of normal tidal breathing flow-volume loops for thoroughbred horses.
MedLine Citation:
PMID:  8540244     Owner:  NLM     Status:  MEDLINE    
The purpose of this study was to characterize the normal equine tidal breathing flow-volume loop (TBFVL). The study was performed using 18 healthy Thoroughbred horses. TBFVLs constructed from data collected from resting horses had a typical biphasic inspiratory and expiratory phase. The interindividual variability of the indices used to describe TBFVLs was in the range 16-32%, which is comparable to the variability of other measures of equine pulmonary mechanics. The large variability of these data probably limits the value of resting TBFVL indices for detecting subclinical respiratory conditions in individual horses. Factor analysis of these data revealed that in excess of 90% of the variance of the initial response variables could be explained in terms of three common factors. Varimax rotation of these three common factors provided three subsequent factors that were readily identifiable as (1) a factor describing the time-volume relationships of TBFVLs, responsible for 81% of the total variance, (2) a factor explaining the expiratory portion of the TBFVL, explaining 12% of the variance, and (3) a factor describing the inspiratory portion of the loops, responsible for the remaining 7% of the variance. The analysis also provided standardized factor scoring coefficients for use in subsequent studies using similar experimental techniques.
A J Guthrie; R E Beadle; R D Bateman; C E White
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Veterinary research communications     Volume:  19     ISSN:  0165-7380     ISO Abbreviation:  Vet. Res. Commun.     Publication Date:  1995  
Date Detail:
Created Date:  1996-02-08     Completed Date:  1996-02-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8100520     Medline TA:  Vet Res Commun     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  331-42     Citation Subset:  IM    
Department of Veterinary Physiology, Pharmacology and Toxicology, Louisiana State University, Baton Rouge 70803, USA.
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MeSH Terms
Horses / physiology*
Lung / physiology*
Reference Values
Respiration / physiology*
Respiratory Function Tests / veterinary
Tidal Volume / physiology

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

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