A multi-scale model of gas transport in the lung to study heterogeneous lung ventilation during the multiple-breath washout test
Fig 5
Schematic presentation of the N2 concentration-volume curve of a single breath.
Expired N2 concentration is expressed as % of the initial N2 concentration. Phase III is defined between 50% and 95% of the expired volume. Slope III: the slope of the concentration-volume curve during phase III.