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Article (Scientific journals)
Quantitative bacterial cultures and cytological examination of bronchoalveolar lavage specimens in the diagnosis of lower respiratory tract disease in dogs: a retrospective study of 48 cases.
Peeters, Dominique; McKierman, B.; Weisiger, R. et al.
2000In Journal of Veterinary Internal Medicine, 14 (5), p. 534-541
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Keywords :
BAL; bacterial culture; dog
Abstract :
[en] Cytology and quantitative bacterial cultures of lower respiratory tract secretions are widely used in human medicine to differentiate airway infection from simple bacterial colonization. A retrospective study was conducted to determine the usefulness of quantitative aerobic cultures and Gram stain intracellular bacteria counts from bronchoalveolar lavage (BAL) specimens in dogs in diagnosing lower respiratory tract infection (LRTI) and to determine whether chronic bronchitis is associated with marked bacterial growth in dogs. The threshold determined to define clinically relevant bacterial growth was 1.7 x 10(3) colony-forming units per milliliter of BAL fluid. We used this threshold and found that diagnostic sensitivity and specificity were 86% and 100%, respectively. With a threshold for infection of >2 intracellular bacteria observed in any of 50 fields, microscopic examination of Gram stain BAL preparations had a sensitivity of 71% and a specificity of 97% in establishing LRTI. There was a high correlation between bacterial morphology on BAL Gram stain and bacterial cultures. Combining the results of intracellular bacteria counts from the BAL Gram stain with those from the quantitative cultures, the sensitivity in diagnosing LRTI was 87% and the specificity was 97%. BAL quantitative cultures as well as quantitating intracellular bacteria on Gram stain BAL cytology were revealed to be useful in identifying LRTI in dogs. Chronic bronchitis does not appear to be associated with marked bacterial growth in dogs.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Peeters, Dominique ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Médecine interne des animaux de compagnie
McKierman, B.
Weisiger, R.
Schaeffer, D.
Clercx, Cécile  ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Pathologie médicale des petits animaux
Language :
English
Title :
Quantitative bacterial cultures and cytological examination of bronchoalveolar lavage specimens in the diagnosis of lower respiratory tract disease in dogs: a retrospective study of 48 cases.
Publication date :
2000
Journal title :
Journal of Veterinary Internal Medicine
ISSN :
0891-6640
eISSN :
1939-1676
Publisher :
Allen Press, Lawrence, United States - Kansas
Volume :
14
Issue :
5
Pages :
534-541
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 27 May 2010

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