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KMID : 0191120040190010062
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Journal of Korean Medical Science
2004 Volume.19 No. 1 p.62 ~ p.68
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Relationships between High-Resolution Computed Tomography,Lung Function and Bacteriology in Stable Bronchiectasis
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Lee JH
Kim YK/Kwag HJ/Chang JH
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Abstract
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To determine the relationship between high-resolution computed tomography (HRCT) findings, lung function, and bacteriology in bronchiectasis, we conducted a retrospec-tive study of 49 Korean patients with stable bronchiectasis. To quantify the extent and severity of bronchiectasis, we used a CT scoring system consisting of bronchial dilatation, bronchial wall thickening, the number of bronchiectatic segments, the number of bulla, and the number of emphysema segments. The presence of air-fluid levels and lung consolidation were also evaluated. The results of CT scoring, spirom-etry and sputum culture were analyzed. Patients with cystic bronchiectasis had high-er CT score, more dilated lumen and lower forced vital capacity (FVC), forced expi-ratory volume in 1 sec (FEV1 ), and FEV1 /FVC than patients with cylindrical bron-chiectasis. Patients with mixed ventilatory impairment had larger number of bron-chiectatic segments than patients with obstructive ventilatory impairment. CT score and the number of bronchiectatic segments were significantly associated with FVC and FEV1 , while CT score and the number of emphysema segments were signifi-cantly associated with FEV1 /FVC. Twenty-one patients of 49 patients showed a pos-itive sputum culture including 15 cases of Pseudomonas aeruginosa. The CT score was the most important predictor of lung function. The presence of air-fluid levels predicted bacterial colonization.
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