Comparison of two commercially available devices to measure nitric oxide lung diffusing capacity in healthy, non-smoking adults

The measurement of nitric oxide lung diffusing capacity (DLNO) has been recently standardised. To date, two pulmonary function devices are commercially available and are used for the measurement of DLNO. However, no previous study has compared gas exchange outcomes (i.e.,DLNO values) between both devices.The aim of this randomised crossover study is to compare two commercially available devices to measure DLNO („MasterScreenTM“, PFT Pro, Jaeger, CareFusion, Hoechberg, Germany versus „HypAir“, Medisoft, Dinant, Belgium).