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
  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