Chest wall oscillation

Chest wall oscillation is when devices are used in airway clearance therapy to clear excess mucus from lung airways. It is principally used in the treatment of cystic fibrosis, but is gaining use in the treatment of other diseases, such as bronchiectasis, COPD, cerebral palsy and muscular dystrophy, in which excessive mucus can block airways due to excessive production or impaired clearance.

This keyword could refer to multiple things. Here are some suggestions: