WS14.1 Day-time variability and short term effect of chest physiotherapy on multiple breath nitrogen washout in children with cystic fibrosis

WS14.1 Day-time variability and short term effect of chest physiotherapy on multiple breath nitrogen washout in children with cystic fibrosis C. Voldby1, K. Green1, T. Kongstad1, L. Philipsen1, F.F. Buchvald1, M. Skov1, T. Pressler1, P. Gustafsson2, K.G. Nielsen1. 1Copenhagen University Hospital, Rigshospitalet, CF-Center Copenhagen, Pediatric Pulmonary Service, Copenhagen, Denmark; 2Central Hospital Skovde, Department of Pediatrics, Skovde, Sweden