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Pathogenesis

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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The pathogenesis of bronchiolitis includes:

  • bronchial obstruction caused by oedema, mucous debris and viral invasion
  • air trapping, where air enters the alveoli and is unable to leave
  • atelectasis
  • reduced ventilation

It commonly occurs in infants with chronic lung disease - for example those ventilated as neonates.

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