Lung function gain in preterm infants with and without bronchopulmonary dysplasia

Area of Science:

• Pediatric Pulmonology
• Neonatology
• Respiratory Medicine

Background:

• Bronchopulmonary dysplasia (BPD) is a chronic lung disease affecting preterm infants.
• Impaired lung development in BPD can have long-term consequences.
• Understanding lung function trajectories in BPD is crucial for clinical management.

Purpose of the Study:

• To compare lung function development in preterm infants with and without BPD.
• To investigate the influence of nutritional status and growth on lung function.
• To assess lung function catch-up in the first two years of life.

Main Methods:

• Lung function tests (FVC, FEV0.5, FEF75, FEF25-75) were conducted on 71 preterm infants.
• Measurements were taken at 6 months and 1 year corrected age using the raised volume rapid thoraco-abdominal compression technique.
• Growth parameters (weight, length) and height velocity were analyzed.

Main Results:

• Infants with BPD showed significantly lower FVC, FEV0.5, FEF75, and FEF25-75 compared to non-BPD infants.
• No significant lung function catch-up was observed in either group during the study period.
• Increased height velocity was associated with improvements in FVC, FEV0.5, and FEF75.

Conclusions:

• Preterm infants with BPD have persistently lower lung function.
• Lung function development in early childhood is closely linked to somatic growth, particularly linear growth.
• Early BPD diagnosis and monitoring of growth are essential for optimizing respiratory outcomes.