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Restrictive pattern on spirometry in a child with cystic bronchiectasis

Restrictive pattern on spirometry in a child with cystic bronchiectasis
Spirometry in a child with cystic (severe) bronchiectasis due to recurrent small-volume aspiration. This shows a restrictive pattern (reduced FVC and FEV1).
FEV1: forced expiratory volume in 1 second; FVC: forced vital capacity; FEV1% FVC: FEV1 as a percent of FVC; MFEF 75 to 25%: maximal forced expiratory flow between 75 and 25% of FVC.
Courtesy of Anne B Chang, MBBS, FRACP, PhD, FAPSR, FAHMS, and Vikas Goyal, MBBS, DCH, FRACP, PhD.
Graphic 131120 Version 1.0