Rapid progression from croup to complete lung collapse: a case report of central airway obstruction by mucopurulent cast in influenza A (H3N2) and Pseudomonas aeruginosa coinfection in a toddler - Takeaways - MDSpire

Rapid progression from croup to complete lung collapse: a case report of central airway obstruction by mucopurulent cast in influenza A (H3N2) and Pseudomonas aeruginosa coinfection in a toddler

  • By

  • Xiumin Zhang

  • Fujing Xie

  • Jingcai Wang

  • Jing Zhao

  • Cuicui Guo

  • June 2, 2026

  • 0 min

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  • 1

    Croup is a common pediatric condition often caused by viral infections, with severe cases potentially leading to respiratory distress.

  • 2

    A 13-month-old boy developed acute respiratory failure due to co-infection with influenza A (H3N2) and Pseudomonas aeruginosa.

  • 3

    The patient experienced complete left lung atelectasis due to a mucopurulent cast obstructing the left main bronchus.

  • 4

    Despite glucocorticoid therapy and mechanical ventilation, the child's respiratory failure persisted until the obstruction was removed.

  • 5

    The child was treated with antibiotics and peramivir, ultimately being discharged on day 9 without recurrence of symptoms.

Original Source(s)

Rapid progression from croup to complete lung collapse: a case report of central airway obstruction by mucopurulent cast in influenza A (H3N2) and Pseudomonas aeruginosa coinfection in a toddler

  • by Xiumin Zhang, Fujing Xie, Jingcai Wang, Jing Zhao, Cuicui Guo

  • June 2, 2026

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