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Author Spotlight: Enhancing Diagnostic Strategies and Biomarker Development for Comprehensive Lung Function Analysis
Published on: August 9, 2024
Structural and functional ventilatory impairment in infants with severe bronchopulmonary dysplasia
Esther van Mastrigt1,2, Ellaha Kakar3, Pierluigi Ciet4
1Division of Pediatric Respiratory Medicine, Department of Pediatrics, Erasmus MC-Sophia, University Medical Center Rotterdam, Rotterdam, the Netherlands.
Insights
Preterm infants with severe bronchopulmonary dysplasia (BPD) often have lung structure abnormalities and impaired breathing. Early infant growth is linked to better lung development and fewer breathing issues.
Area of Science:
- Neonatology
- Pediatric Pulmonology
- Medical Imaging
Background:
- Bronchopulmonary dysplasia (BPD) is a significant complication in premature infants.
- Severe BPD impacts lung structure and ventilatory function.
- Early postnatal growth may influence BPD outcomes.
Purpose of the Study:
- To characterize lung structure and ventilatory function in preterm infants with severe BPD.
- To investigate the relationship between early postnatal growth and BPD-related outcomes.
Main Methods:
- Included preterm infants (≤32 weeks GA) with severe BPD.
- Assessed lung structure via chest CT (PRAGMA-BPD score).
- Evaluated ventilatory function using polysomnography (PSG) at 6 months corrected age.
- Tracked postnatal growth (birth, 2, and 6 months corrected age).
Main Results:
- 95.5% of infants showed lung architectural distortion; 74% had an oxygen desaturation index (ODI) >5.
- Increased gestational age (GA) correlated with better lung volumes and lower ODI.
- Higher weight at 6 months and improved weight gain between 2-6 months were linked to better lung volumes and less severe desaturations.
Conclusions:
- Preterm infants with severe BPD exhibit early structural lung deficits and impaired ventilatory function.
- Birth characteristics and postnatal growth significantly influence BPD outcomes.
- Optimizing infant growth may mitigate respiratory complications in severe BPD.
Background:
Bronchopulmonary dysplasia (BPD) is the most frequent serious complication in preterm infants. We aimed to describe lung structure and ventilatory function of preterm infants with severe BPD and explored the association between early postnatal growth and these outcomes.
Methods:
We included preterm infants born ≤32 weeks gestational age (GA) with severe BPD. Lung structure was assessed on chest CT with the PRAGMA-BPD scoring system and ventilatory function by polysomnography (PSG) at 6 months corrected age. Postnatal growth was assessed by weight measured at birth, and at 2 and 6 months corrected age.
Results:
We included 49 infants (median [IQR] GA of 25.7 [24.6-26.3] weeks and mean [SD] birth weight of 760 [210] g). A 95.5% of the chest CT scans showed architectural distortion of the lung, and an oxygen desaturation index (ODI) >5 was found in 74% of the infants. An increase in GA of 1 week was associated with higher total and normal lung volume (β coefficient [95% CI]: 1.86 [0.15, 3.57] and 2.03 [0.41, 3.65]), less hypoattenuation (-4.3 [-7.70, -0.90]%) and lower ODI (-36.7 [-64.2, -9.10]%). Higher weight at 6 months was independently associated with higher total and normal lung volume, and with less severe desaturations. Increased weight gain between 2 and 6 months of corrected age was associated with less severe desaturations during sleep (β coefficient [95% CI]: 2.09 [0.49, 3.70]).
Conclusion:
Most preterm infants with severe BPD have structural lung abnormalities and impaired ventilatory function early in life, partly explained by birth characteristics and infant growth.
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