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- W2161539466 abstract "Impaired mucociliary clearance is a hallmark of cystic fibrosis (CF). Early morphological changes first appear in the small airways. Lung clearance was investigated in 11 young CF adults with mild-to-moderate lung disease using a method depositing particles mainly in the small airways. Radiolabelled Teflon particles (6 microm) were inhaled with an extremely slow inhalation flow, 0.05 L x s(-1). Lung retention was measured immediately following inhalations and, on four occasions up to 21 days. The results were compared with data from healthy subjects. The lung retention at 24 h in % of deposition was 67% (95% confidence interval 58-76) in the CF patients, compared to 48% (42-53) in the healthy subjects. Clearance on days 1-7 was larger in the CF patients, 22% (15-29) compared to the healthy subjects, 14% (12-16). No difference was observed between the CF patients and the healthy subjects in the slow clearance phase at day 7 to day 21, representing small airway clearance. Impaired mucociliary clearance in CF patients results in increased 24-h retention and a prolonged rapid clearance phase. The results of the study do not support the current authors' hypothesis that clearance from small airways is slower in cystic fibrosis patients compared to healthy subjects. Furthermore, the data suggest that mucociliary transport is not the dominant clearance mechanism in small airways." @default.
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- W2161539466 date "2005-02-01" @default.
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- W2161539466 title "Long-term clearance from small airways in patients with cystic fibrosis" @default.
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- W2161539466 doi "https://doi.org/10.1183/09031936.05.00120103" @default.
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