Requires only a LFX software option: Capnovolumetry (with ScoutTube) is the analysis of the exhaled CO₂ compared to the exhaled volume. The CO₂ concentration of exhaled air is plotted against the exhaled volume and thereby the anatomical airway dead space as well as the functional airway dead space can be determined. This method is independent of patient cooperation and therefore especially useful for monitoring respiratory diseases in both pediatric and geriatric patients.