Dynamic tracheal collapse

Last revised by Daniel J Bell on 2 Aug 2021

Dynamic tracheal collapse refers to collapse of the trachea during expiration. It is perhaps best assessed on CT in the end expiratory phase. An inspiratory series is also useful for comparative purposes. The term excessive dynamic airway collapse (EDAC) refers to abnormal and exaggerated bulging of the posterior wall within the airway lumen during exhalation, and is often termed pathological if the reduced airway lumen is <50% of normal during this phase 4.

It may cause a variety of symptoms such as dyspnea, wheeze, and exercise intolerance 3.

The posterior cartilage free tracheal membrane bulges forwards excessively during expiration. It can be observed in a number of conditions:

The prognosis depends of the severity of the condition. Varied management strategies have been proposed with some authors suggested tracheoplasty for selected cases 7.

ADVERTISEMENT: Supporters see fewer/no ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.