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Long-term pulmonary morbidity in survivors of congenital diaphragmatic hernia

Daniel Trachsel1, Hiran Selvadurai, Desmond Bohn

  • 1Division of Respiratory Medicine, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada.

Pediatric Pulmonology
|February 11, 2005
PubMed

Insights

Adolescent survivors of congenital diaphragmatic hernia (CDH) exhibit persistent mild to moderate airway obstruction and reduced inspiratory muscle strength. Many patients show significant improvement in lung function after bronchodilator use, indicating potential for targeted therapies.

Area of Science:

  • Pediatric Pulmonology
  • Thoracic Surgery
  • Critical Care Medicine

Background:

  • Congenital diaphragmatic hernia (CDH) is a serious birth defect impacting lung development.
  • Long-term respiratory sequelae in CDH survivors require further investigation.

Purpose of the Study:

  • To evaluate the long-term respiratory outcomes in adolescent survivors of congenital diaphragmatic hernia (CDH).
  • To assess pulmonary function, inspiratory muscle strength, and response to bronchodilators in CDH patients.

Main Methods:

  • A cohort study comparing 26 adolescent CDH survivors with age- and gender-matched controls.
  • Pulmonary function testing including maximum inspiratory/expiratory pressures (MIPS/MEPS) and maximum voluntary ventilation (MVV).
  • Analysis of medical histories and statistical comparison using t-tests and regression.

Main Results:

  • CDH survivors showed significantly reduced forced expiratory volume in one second (FEV(1)), FEF(25-75), MVV, and MIPS compared to controls.
  • Forty-eight percent of CDH patients demonstrated significant FEV(1) improvement post-bronchodilator, versus 4% of controls.
  • Reduced MVV was strongly correlated with reduced FEV(1).

Conclusions:

  • Long-term respiratory outcomes in adolescent CDH survivors are characterized by mild to moderate airway obstruction and diminished inspiratory muscle strength.
  • A high prevalence of bronchodilator responsiveness suggests potential therapeutic targets.
  • Findings emphasize the need for tailored follow-up and perioperative management in CDH patients.

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