TY - JOUR T1 - Is twice the duration of washout sufficient time between multiple breath nitrogen washout tests? JF - European Respiratory Journal JO - Eur Respir J DO - 10.1183/13993003.02064-2016 VL - 49 IS - 2 SP - 1602064 AU - Elizabeth R. Salamon AU - Kevin R. Gain AU - Graham L. Hall Y1 - 2017/02/01 UR - http://erj.ersjournals.com/content/49/2/1602064.abstract N2 - We read the paper by K.M. Hardaker and co-workers with great interest. Their study confirmed our earlier data: that a washout-derived wait time between measurements of nitrogen-based multiple breath washout (MBW) was not influenced by disease severity, and that on average a wait time of twice the duration of the washout between nitrogen MBW tests eliminated potential measurement artefacts [1].Waiting for multiple breath washout: when is long enough? http://ow.ly/5b5b306mYYh ER -