What question did this study set out to answer?

To evaluate the reproducibility of sputum cell counts and compare airway inflammatory cell profiles between patients with asthma and chronic bronchitis.

September 1, 1989ThoraxOpen Access

Cellular characteristics of sputum from patients with asthma and chronic bronchitis.

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Authors

PGPeter G. GibsonMedical Council of Canada AGAdele Girgis-GabardoSaint Michael's College MMMichael J. MorrisUnited States Army Medical Command

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Implication

Comparative study reveals distinct sputum cellular profiles in asthma and chronic bronchitis, indicating sputum analysis is a reliable tool to evaluate airway inflammation.

Key Points

To evaluate the reproducibility of sputum cell counts and compare airway inflammatory cell profiles between patients with asthma and chronic bronchitis.
Examined sputum plugs isolated by microscopy from three groups: 8 patients with chronic asthma (reproducibility evaluation), 10 non-smoking asthmatics experiencing acute exacerbation, and 8 smoking patients with chronic bronchitis.
Conducted total cell counts on trypsinized suspensions, along with differential and formaldehyde-blockable metachromatic cell counts on undiluted sputum plugs.
Sputum cell measurements showed high within-specimen reproducibility (reliability coefficient R = 0.99) and test-retest reproducibility (R = 0.89).
Sputum from asthmatic patients was dominated by eosinophils (69%, range 46–92%) and contained metachromatic cells (1.5%, range 0.6–2.8%).
Sputum from chronic bronchitis patients had few eosinophils (0.5%) or metachromatic cells (0.14%), with macrophages as the predominant cell type (83%).

Cite This Study

Gibson et al. (1989) studied this question.

synapsesocial.com/papers/6a6ff9886ceb2bbd16dfc3d6 https://doi.org/10.1136/thx.44.9.693

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Implication

Comparative study reveals distinct sputum cellular profiles in asthma and chronic bronchitis, indicating sputum analysis is a reliable tool to evaluate airway inflammation.

Cellular characteristics of sputum from patients with asthma and chronic bronchitis.

Discussion

Member takes

Implication

Key Points

Cite This Study

Cellular characteristics of sputum from patients with asthma and chronic bronchitis.

Discussion

Member takes

Implication

Key Points

Cite This Study

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