tabletop spirometer / computer-based
Tidal breathing analysis with impulse oscillometry (IOS) has demonstrated to be informative and differentiated in the early detection and follow-up of pulmonary diseases like asthma, COPD and idiopathic pulmonary fibrosis.
Almost independent of patient cooperation, IOS can test a larger patient age range than spirometry alone. It helps detect pulmonary obstruction early, measuring impedance indicative of central and peripheral airway resistance. Therefore, IOS oscillometric airway measurements complement spirometry.