Forced expiratory flows' contribution to lung function interpretation in schoolchildren.

Forced expiratory flow (FEF) at low lung volumes are supposed to be better at detecting lung-function impairment in asthmatic children than a forced volume. The aim of this study was to examine whether FEF results could modify the interpretation of baseline and post-bronchodilator spirometry in asthmatic schoolchildren in whom forced expiratory volumes are within the normal range. Spirometry, with post-bronchodilator vital capacity within 10% of that of baseline in healthy and asthmatic children, was recorded prospectively.

Pulmonary function and sleep-related breathing disorders in severely obese children.

Background & Aims: To evaluate the frequency of pulmonary function and sleep-breathing disorders in severely obese children and to search for their association with obesity phenotypes.

Methods: Sleep studies and spirometry were performed for 54 severely obese children.

Results: Upper airway resistances (RAWs) were increased with RAW>200% and forced 25s expiratory volume<80% in 83% and 60% of individuals, respectively.