Bronchiectasis is characterized by which description?

Bronchiectasis is characterized by which description?

• A. Alveolar fibrosis.
• B. Bronchioles narrowed due to asthma.
• C. Acute edema of alveoli.
• D. Airway obstruction due to chronic abnormal dilation of the bronchi and the elastic/muscular components of the bronchial walls.

Answer: (D)

Bronchiectasis involves permanent dilation and distortion of the bronchi due to destruction of the elastic and muscular components of the bronchial walls from chronic infection and inflammation. This structural change causes airway obstruction and impaired mucus clearance, leading to a chronic productive cough and recurrent infections. The description in the option directly reflects this chronic, abnormal dilation of the bronchi and the damaged wall components, which sets bronchiectasis apart from other lung conditions. For contrast, alveolar fibrosis is scarring of the alveolar/interstitial tissue, asthma causes reversible narrowing of smaller airways, and acute edema fills the alveoli with fluid—none of which describe the permanent bronchial dilation characteristic of bronchiectasis.

Bronchiectasis involves permanent dilation and distortion of the bronchi due to destruction of the elastic and muscular components of the bronchial walls from chronic infection and inflammation. This structural change causes airway obstruction and impaired mucus clearance, leading to a chronic productive cough and recurrent infections. The description in the option directly reflects this chronic, abnormal dilation of the bronchi and the damaged wall components, which sets bronchiectasis apart from other lung conditions. For contrast, alveolar fibrosis is scarring of the alveolar/interstitial tissue, asthma causes reversible narrowing of smaller airways, and acute edema fills the alveoli with fluid—none of which describe the permanent bronchial dilation characteristic of bronchiectasis.