The Vitalograph—A study of its role in pulmonary function testing in childhood

This study examined results obtained with the Vitalograph wedge bellows spirometer in 25 male children aged 14–17 years, as compared with available normal values. Also examined were results obtained with the Vitalograph wedge bellows spirometer in 279 healthy children aged 6–18 years. Across the studies, lung function parameters included FEV1, FVC, PEF, MVV, FMF, and MEF.