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Development of a Neonatal Piglet Acute Lung Injury Model Recreating the Early Environment of Preterm Infant Lungs
Published on: October 31, 2025
Individualized lung recruitment during high-frequency ventilation in preterm infants is not associated with lung
Anne P De Jaegere1, Eline E Deurloo2, Rick R van Rijn2
1Department of Neonatology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands.
Insights
Individualized lung recruitment using high-frequency ventilation (HFV) in preterm infants with respiratory distress syndrome (RDS) shows a low risk of lung hyperinflation and air leaks. This approach may improve lung aeration and reduce complications in neonates.
Area of Science:
- Neonatal Medicine
- Pediatric Respiratory Medicine
- Critical Care
Background:
- Lung recruitment during high-frequency ventilation (HFV) in preterm infants with respiratory distress syndrome (RDS) carries risks of lung hyperinflation and air leaks.
- Individualizing recruitment strategies may mitigate these risks based on disease severity.
Purpose of the Study:
- To evaluate chest X-ray (CXR) findings during individualized oxygenation-guided lung recruitment with HFV in preterm infants with RDS.
- To assess the incidence of lung hyperinflation and air leaks before and after surfactant therapy.
Main Methods:
- Prospective cohort study involving 69 preterm infants with RDS undergoing HFV.
- Chest X-rays were analyzed by two pediatric radiologists for radiolucency, hyperinflation, and air leaks before and after surfactant treatment.
- An individualized oxygenation-guided recruitment protocol was employed.
Main Results:
- Following recruitment, 64% of infants had a radiolucency score ≤2, indicating adequate lung aeration.
- Mild to moderate hyperinflation was observed in 19% of infants, with no air leaks initially.
- After surfactant, 62% showed improved radiolucency, with mild to moderate hyperinflation in 24% and air leaks in only 6% of patients during the entire admission.
Conclusions:
- Individualized oxygenation-guided lung recruitment during HFV in preterm infants with RDS is associated with a low risk of significant hyperinflation and air leaks.
- This approach appears safe and effective in improving lung aeration in this vulnerable population.
Unlabelled:
Lung recruitment during high-frequency ventilation (HFV) in preterm infants with respiratory distress syndrome (RDS) has been associated with an increased risk of lung hyperinflation and air leaks. Individualizing the lung recruitment procedure to the severity of lung disease of each patient might reduce these risks. In this prospective cohort study, we evaluated chest X-ray (CXR) characteristics during individualized oxygenation-guided lung recruitment with HFV in preterm infants with RDS, before and after surfactant therapy. Two pediatric radiologists scored radiolucency, the presence of lung hyperinflation, and/or air leaks following lung recruitment during HFV in 69 infants before and 39 infants after surfactant treatment. Following lung recruitment, the median radiolucency score was 2, with 44 (64 %) infants having a score ≤2. Only mild to moderate hyperinflation was seen in 13 (19 %) infants, with no air leaks. After the surfactant, the radiolucency score improved in 62 % of 39 paired CXRs (p < 0.001). Mild to moderate hyperinflation was seen in nine (24 %) patients. During the entire admission, only four (6 %) of the patients developed air leaks.
Conclusion:
The risk of significant hyperinflation and air leaks is low when using an individualized oxygenation-guided recruitment procedure during HFV in preterm infants with RDS.
What Is Known:
• Lung recruitment during high-frequency ventilation in preterm infants with respiratory distress syndrome is associated with an increased risk of lung hyperinflation and air leaks. What is New: • The risk of lung hyperinflation and air leaks is low when using an individualized oxygenation-guided lung recruitment procedure during high-frequency ventilation in preterm infants with respiratory distress syndrome.
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