Atelectasis

2021-02-23 12:00 AM

Atelectasis refers to an area of the collapsed or non-expanded lung. It is reversible, but areas of atelectasis predispose to infection due to decreased mucociliary clearance.

ATELECTASIS

Atelectasis refers to an area of the collapsed or non-expanded lung. It is reversible, but areas of atelectasis predispose to infection due to decreased mucociliary clearance.

The major types are as follows:

  • Obstruction/resorption atelectasis is the collapse of the lung due to the resorption of air distal to an obstruction; examples include aspiration of a foreign body, chronic obstructive pulmonary disease (COPD), and postoperative atelectasis.
  •  Compression atelectasis is atelectasis due to fluid, air, blood, or tumor in thepleural space.
  •  Contraction (scar) atelectasis is due to fibrosis and scarring of the lung.
  •  Patchy atelectasis is due to a lack of surfactant, as occurs in hyaline membranedisease of newborn or acute (adult) respiratory distress syndrome (ARDS).