excessive dynamic airway collapse and tracheomalacia


Overview

  • tracheomalacia and EDAC are both part of excessive central airway collapse
  • tracheomalacia is widening of coronal dimension and narrowing of sagittal dimension from weakening of the cartilages
  • EDAC is anterior bowing of posterior membrane from weakening of longitudinal elastic fibers, cartilage is ok
  • severity:
    • mild: 70%
    • moderate 80-90%
    • severe: over 90%

Diagnosis

  • you can see it on CT scan
  • PFT can often show variable expiratory obstruction

Treatment

  • tracheobronchomalacia are often symptomatic and need treatment: e.g. tracheobronchoplasty (TBP)
  • EDAC may or may not be symptomatic. 1

Footnotes

  1. Tracheobronchomalacia vs Excessive Dynamic Airway Collapse