Respiratory Distress Syndrome

  • Etiology: pre-term infants have not begun producing surfactant, lack of surfactant results in diffuse microatelectasis
  • CXR: low lung volumes and symmetrical (apex to base as well as left to right) ground glass opacity in both lungs (until artificial surfactant is given), bell-shaped chest, most common change seen on serial CXR is atelectasis from decreased ventilator settings in attempt to wean patient off of ventilator
  • Complications: can choose 2 paths after 30 days: Chronic lung disease or Bronchopulmonary dysplasia
  • Clinical: called respiratory distress syndrome in < 30 days, bronchopulmonary dysplasia or chronic lung disease in > 30 days, can also rarely been seen in term infants who congenitally lack ability to produce surfactant

Cases of Respiratory Distress Syndrome

CXR of respiratory distress syndrome
Initial CXR shows low lung volumes and symmetrical (apex to base as well as left to right) ground glass opacity in both lungs.
CXR of respiratory distress syndrome
CXR AP shows bilaterally poorly expanded lungs with diffuse ground-glass opacities throughout the lungs.