Functional and structural evaluation in the lungs of children with repaired congenital diaphragmatic hernia

Area of Science:

• Pediatric Pulmonology
• Neonatal Surgery
• Medical Imaging

Background:

• Congenital diaphragmatic hernia (CDH) repair requires long-term evaluation of pulmonary development.
• Understanding functional and structural pulmonary outcomes post-CDH repair is crucial for patient management.
• Identifying perinatal-neonatal risk factors can improve prognostication for repaired CDH.

Purpose of the Study:

• To assess long-term functional and structural pulmonary development in children after congenital diaphragmatic hernia (CDH) repair.
• To identify perinatal-neonatal risk factors associated with pulmonary outcomes in repaired CDH.
• To correlate lung volumes and pulmonary function with specific birth measurements.

Main Methods:

• Retrospective analysis of children with repaired CDH (gestational age ≥35 weeks) followed for ≥5 years.
• Spirometry and chest computed tomography (CT) used to evaluate pulmonary function and structure.
• Total lung volume (TLV) relative to body surface area used for grouping; association with perinatal-neonatal factors analyzed.

Main Results:

• 25% of children with repaired CDH exhibited abnormal pulmonary function, predominantly restrictive patterns.
• Pulmonary function was generally worse than in healthy controls, linked to smaller head and abdominal circumferences at birth.
• Abnormal pulmonary function and reduced total lung volume (TLV) were significantly associated with smaller abdominal circumference at birth.

Conclusions:

• A significant proportion of children with repaired CDH present with long-term pulmonary function deficits.
• Small abdominal circumference at birth is a key predictor of abnormal pulmonary function and reduced lung volume in repaired CDH.
• Early identification of risk factors like abdominal circumference can guide monitoring and intervention strategies for pediatric CDH patients.