Document Detail


Effects of xylazine on acid-base balance and arterial blood-gas tensions in goats under different environmental temperature and humidity conditions.
MedLine Citation:
PMID:  11212933     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effects of acute exposure to 3 different temperature and humidity conditions on arterial blood-gas and acid-base balance in goats were investigated after intravenous bolus administration of xylazine at a dose of 0.1 mg/kg. Significant (P<0.05) changes in the variables occurred under all 3 environmental conditions. Decreases in pH, partial pressure of oxygen and oxyhaemoglobin saturation were observed, and the minimum values for oxygen tension and oxyhaemoglobin saturation were observed within 5 min of xylazine administration. The pH decreased to its minimum values between 5 and 15 min. Thereafter, the variables started to return towards baseline, but did not reach baseline values at the end of the 60 min observation period. Increases in the partial pressure of carbon dioxide, total carbon dioxide content, bicarbonate ion concentration, and the actual base excess were observed. The maximum increase in the carbon dioxide tension occurred within 5 min of xylazine administration. The increase in the actual base excess only became significant after 30 min in all 3 environments, and maximal increases were observed at 60 min. There were no significant differences between the variables in the 3 different environments. It was concluded that intravenous xylazine administration in goats resulted in significant changes in arterial blood-gas and acid-base balance that were associated with hypoxaemia and respiratory acidosis, followed by metabolic alkalosis that continued for the duration of the observation period. Acute exposure to different environmental temperature and humidity conditions after xylazine administration did not influence the changes in arterial blood-gas and acid-base balance.
Authors:
E G Mogoa; G F Stegmann; A J Guthrie
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the South African Veterinary Association     Volume:  71     ISSN:  1019-9128     ISO Abbreviation:  J S Afr Vet Assoc     Publication Date:  2000 Dec 
Date Detail:
Created Date:  2001-02-12     Completed Date:  2001-07-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7503122     Medline TA:  J S Afr Vet Assoc     Country:  South Africa    
Other Details:
Languages:  eng     Pagination:  229-31     Citation Subset:  IM    
Affiliation:
Department of Companion Animal Surgery, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa.
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MeSH Terms
Descriptor/Qualifier:
Acid-Base Equilibrium / drug effects*
Adrenergic alpha-Agonists / pharmacology*
Animals
Bicarbonates / blood
Blood Gas Analysis / veterinary
Blood Pressure / drug effects
Carbon Dioxide / blood
Cross-Over Studies
Goats / blood*
Humidity
Hydrogen-Ion Concentration
Male
Oxygen / blood
Oxyhemoglobins / drug effects
Temperature
Time Factors
Xylazine / pharmacology*
Chemical
Reg. No./Substance:
0/Adrenergic alpha-Agonists; 0/Bicarbonates; 0/Oxyhemoglobins; 124-38-9/Carbon Dioxide; 7361-61-7/Xylazine; 7782-44-7/Oxygen

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


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