Spirometry with FVL measurement is a vital component of the patient evaluation for respiratory symptoms, and when a properly performed FVL test is abnormal it should prompt a thorough investigation.

Tracheobronchomalacia (TBM) is a rare disease caused by weakness of the trachea and bronchi due to softening of the supporting cartilage and hypotonia of myoelastic elements. 1,2 We present two cases ...

This application note provides an introduction to spirometers and their basic functions. It discusses both laboratory units and portable devices for point-of-care testing, and offers guidance on ...