Alveoli

Atelectasis

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Atelectasis, Lobar Collapse

  • Definition
  1. Alveolar collapse of lung lobe
  • Pathophysiology
  1. Bronchial obstruction results in Lobar Collapse
    1. Implies lack of collateral ventilation
  2. Air distal to obstruction reabsorbed in 4-24 hours
    1. Reabsorption is faster with Supplemental Oxygen
  • Causes
  1. Post-operative change
  2. Rib Fracture or rib Contusion
  • Symptoms
  • Signs
  1. Fever is not caused by atelectesis
    1. Both atelectesis and fever are a result of the same triggers (e.g. major surgery)
  2. Affected lung side or lobe
    1. Diminished respiratory movements
    2. Diminished breath sounds
    3. Dullness to percussion
  3. Tracheal displacement toward affected side
  • Imaging
  1. See Atelectasis on Chest XRay
  2. Chest XRay
    1. Lung opacity in affected area
    2. Shifted mediastinum to affected side
    3. Elevated diaphragm on affected side
  • Management
  1. Incentive Spirometry