Microbiological examination of bronchoalveolar lavage in dogs with bronchopneumonia
https://doi.org/10.52419/issn2072-2419.2026.1.56
Abstract
The isolation of microorganisms in the diagnostic titer is significant evidence of the presence of bacterial pneumonia. Determination of sensitivity to antimicrobial drugs allows you to select adequate antibiotic therapy. The aim of this work was to study the microbial composition of the respiratory tract microflora in the material obtained by bronchoalveolar lavage from dogs with bronchopneumonia, and some properties of microorganisms in animals with acute bronchopneumonia. This article describes the results of a microbiological study of material from 72 dogs with signs of acute pneumonia. The animals underwent bronchoalveolar lavage (BAL) under sedation, and the selected material was sent for microbiological examination. In 65 % of sick animals, pneumonia was significantly associated with bacterial etiology. In 57 % of dogs, antibiotic resistance of microorganisms was found in BAL samples, and therefore therapy should be selected taking into account the results of microbiological examination. Antibiotic resistance was found in 47 microorganisms, and in 5 dogs, the bacteria were resistant to all the studied groups of antibiotics, and these dogs subsequently died. A combined infection (the presence of more than one microorganism in the BAL) was detected in 51.7 % of cases. Most often, antibioticresistant strains were insensitive to betalactams and tetracyclines, which is consistent with the frequency of their administration. Of the 34 species of microorganisms found in the BAL, 91.2 % were part of the normoflora or conditionally pathogenic transient microflora of the respiratory or oral apparatus, therefore, the interpretation of the microbiological study should take into account the clinical picture. Pasteurella multocida, Escherichia coli, and Streptococcus fryi were the most common.
About the Authors
Yu. V. Gradova
St. Petersburg State University of Veterinary Medicine
Russian Federation
Russian Federation
postgraduate student
S. P. Kovalev
St. Petersburg State University of Veterinary Medicine
Russian Federation
Russian Federation
Doctor of Veterinary Sciences, Professor, Head of the Department of Clinical Diagnostics
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For citations:
Gradova Yu.V., Kovalev S.P. Microbiological examination of bronchoalveolar lavage in dogs with bronchopneumonia. International Journal of Veterinary Medicine. 2026;(1):56-61. (In Russ.) https://doi.org/10.52419/issn2072-2419.2026.1.56
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