Reliability of 400-cell and 5-field leukocyte differential counts for equine bronchoalveolar lavage fluid

© 2013 American Society for Veterinary Clinical Pathology.

Bibliographische Detailangaben
Veröffentlicht in:Veterinary clinical pathology. - 1975. - 42(2013), 1 vom: 05. März, Seite 92-8
1. Verfasser: Fernandez, Nicole J (VerfasserIn)
Weitere Verfasser: Hecker, Kent G, Gilroy, Cornelia V, Warren, Amy L, Léguillette, Renaud
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Veterinary clinical pathology
Schlagworte:Journal Article
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245 1 0 |a Reliability of 400-cell and 5-field leukocyte differential counts for equine bronchoalveolar lavage fluid 
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500 |a Date Revised 20.10.2016 
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500 |a Citation Status MEDLINE 
520 |a © 2013 American Society for Veterinary Clinical Pathology. 
520 |a BACKGROUND: Reliable enumeration of mast cells and eosinophils in equine bronchoalveolar lavage (BAL) fluid is important because small increases in the percentages of these cells support the clinical diagnosis of inflammatory airway disease (IAD). Increases in BAL neutrophils also occur with IAD but are not specific due to overlap between IAD and recurrent airway obstruction (RAO) 
520 |a OBJECTIVES: The objectives of this study were to evaluate the reliability of a standard 400-cell leukocyte differential count and an alternate method evaluating 5 microscopic fields at 500× magnification in equine BAL fluid cytocentrifuged preparations 
520 |a METHODS: BAL samples from 60 horses with and without pulmonary inflammation were evaluated using 400-cell and 5-field leukocyte differential counting methods. Reliability of enumeration of each leukocyte type was assessed by calculating and comparing intraclass correlation coefficients (ICC). Reliability of mast cell enumeration was further evaluated by comparing ICCs of slides with different cell densities 
520 |a RESULTS: Reliability was higher for all cell types with the 5-field method; however, overall the difference between methods was not statistically significant. Neutrophil reliability was high (ICC > 0.90) with both methods. Adequate reliability (ICC > 0.85) for mast cells was achieved only with the 5-field method on slides with higher cell density 
520 |a CONCLUSION: Enumeration of mast cells is unreliable when the standard 400-cell differential counting method is used, whereas the 5-field method on slides with higher cell density reached acceptable reproducibility. Neutrophil percentages were highly reliable with both methods 
650 4 |a Journal Article 
700 1 |a Hecker, Kent G  |e verfasserin  |4 aut 
700 1 |a Gilroy, Cornelia V  |e verfasserin  |4 aut 
700 1 |a Warren, Amy L  |e verfasserin  |4 aut 
700 1 |a Léguillette, Renaud  |e verfasserin  |4 aut 
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