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Prevention of bronchopulmonary dysplasia
1Children's Hospital Medical Center, Division of Pulmonary Biology, Cincinnati, Ohio, USA. jobeaO@chmcc.org
Insights
Bronchopulmonary dysplasia (BPD) in preterm infants stems from impaired lung development, often mediated by inflammation. Avoiding mechanical ventilation is key to preventing severe BPD and improving outcomes.
Area of Science:
- Neonatology
- Pediatric Pulmonology
- Developmental Biology
Background:
- Bronchopulmonary dysplasia (BPD) is a chronic lung disease in preterm infants.
- It results from arrested alveolar and vascular development.
- Proinflammatory cytokines, triggered by infection, ventilation, and oxygen, are key mediators.
Purpose of the Study:
- To review current understanding of BPD pathophysiology.
- To highlight strategies for preventing severe BPD.
- To discuss the impact of ventilation and other therapies on BPD outcomes.
Main Methods:
- Review of epidemiologic data.
- Analysis of clinical findings related to BPD.
- Synthesis of current research on BPD pathogenesis and treatment.
Main Results:
- Avoiding intubation and mechanical ventilation appears most effective in preventing severe BPD.
- Evidence supporting specific ventilation techniques over others is inconclusive.
- Strategies maintaining lung expansion and minimizing tidal volumes may be beneficial.
- Adverse effects of postnatal steroid use are increasingly recognized.
Conclusions:
- Minimizing ventilator-induced lung injury is crucial for improving outcomes in very preterm infants.
- New insights into BPD pathophysiology emphasize lung protection strategies.
- Preventive measures focusing on reducing ventilation are paramount.
Abstract:
The clinical syndrome of bronchopulmonary dysplasia (BPD) in preterm infants results primarily from an arrest of lung vascular and alveolar development. The most likely mediators are proinflammatory cytokines that are induced by antenatal exposure to infection, postnatal ventilation, and oxygen exposure. New epidemiologic data suggest that attempts to avoid intubation and ventilation are the best ways to avoid severe BPD. The claim that one ventilation technique is better than another remains unconvincing, and any strategy that maintains the lung open and minimizes tidal volumes probably will be helpful. More adverse effects of postnatal steroids are being recognized. New insights into the pathophysiology of BPD and a new emphasis on minimizing ventilation and ventilator-mediated injury should improve outcomes for very preterm infants.