The utility of impulse oscillometry in asthma: A comparison of spirometry versus impulse oscillometry system

Abstract

Spirometry and body plethysmography have been routinely used for measuring pulmonary function. Impulse oscillometry (IOS) is a variant of forced oscillation technique based on physiologic concepts that were first described almost 50 years ago are emerging in research and in clinical practice. To evaluate IOS usefulness in patients with asthma. This study conducted on 50 patients with a diagnosis of asthma who were classified into two groups, mild-moderate and severe. Spirometry and IOS were performed before and after three months of treatment. Impulse oscillometry provides an easily, rapid tool to diagnose and classify airway obstructive severity in asthma.