The distribution of lung damage in children with cystic fibrosis and its relationship to colonisation with Pseudomonas aeroginosa

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Abstract
Ventilation-perfusion lung scans were performed with 81mKr inhalation and 99mTc-albumin injection in 33 children with cystic fibrosis. It was found that both ventilation and perfusion scans yielded more information than radiographs of the chest in assessing lung damage. Using a scoring system, it was demonstrated by statistical methods that in the worst affected patients the disease was worse in the upper zones of the lungs, which changes were not detectable on chest radiographs. Pseudomonas was present in the sputum of these patients.