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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
Risk factors for the development of bronchopulmonary dysplasia: a case-control study
Lizbeth Hernández-Ronquillo1, José Francisco Téllez-Zenteno, Natali Weder-Cisneros
1Department of Pediatrics, Division of Neonatology, University of Western Ontario, London, Ontario, Canada. liztellez33@hotmail.com
Insights
Neonatal sepsis, low birth weight, and younger gestational age are key risk factors for developing bronchopulmonary dysplasia (BPD) in premature infants requiring ventilatory support. Early identification and management of sepsis are crucial for improving outcomes in these vulnerable infants.
Area of Science:
- Neonatology
- Pediatric Pulmonology
- Critical Care Medicine
Background:
- Neonatal care advances increase survival rates for very premature infants.
- Development in ventilatory support is crucial for survival but can cause lung injury.
- Bronchopulmonary dysplasia (BPD) incidence is rising due to increased survival of premature infants.
Purpose of the Study:
- To evaluate risk factors for bronchopulmonary dysplasia (BPD) in premature infants.
- To identify associations between neonatal and maternal factors and BPD development.
- To provide insights for managing BPD in neonatal intensive care units.
Main Methods:
- A case-control study was conducted at a Neonatal Intensive Care Unit.
- Included 22 premature infants with BPD (cases) and 22 controls requiring ventilatory support.
- Analyzed neonatal and maternal risk factors including sepsis, birth weight, and gestational age.
Main Results:
- Late sepsis (OR 7.29) and multiple sepsis episodes (OR 7.60) were significantly associated with BPD.
- Low birth weight and younger gestational age at birth were also identified as risk factors.
- Sepsis emerged as a primary modifiable risk factor for BPD development.
Conclusions:
- Neonatal sepsis is a significant risk factor for BPD in premature infants.
- Low birth weight and gestational age are confirmed risk factors for BPD.
- Findings align with previous research in developed countries, highlighting sepsis as a critical factor.
Background:
Advances in neonatal care over the past decades have meant that an increasing number of very premature infants survive today than in years past. One of the main factors contributing to the survival of these infants is development in ventilatory support. However, this has lead to lung injury and an increase in the incidence of bronchopulmonary dysplasia (BDP).
Methods:
A case-control study was conducted at the National Institute of Perinatology Neonatal Intensive Care Unit in Mexico City, Mexico to evaluate the risk factors associated with the development of BPD in premature infants requiring ventilatory support within the first days of life for respiratory failure. Twenty two cases and 22 control premature infants admitted to the Neonatal Unit requiring assisted ventilation and that survived for more than 28 days were included. The neonatal and maternal risk factors that were considered for analysis were the following; mode of delivery, antenatal steroids, gestational age, birth weight, Apgar scores, sepsis, patent ductus arteriosus, and ventilation parameters.
Results:
Factors associated with the development of BPD were late sepsis (OR 7.29, 95% CI 1.61-35.8, p=0.002), and two or more episodes of sepsis (OR 7.60, 95% CI 1.46-44.6, p=0.004). Other risk factors were low birth weight and younger gestational age at birth.
Conclusions:
Similar to what has been reported by other investigators in developed countries, our study showed that neonatal sepsis, low birth weight, and gestational age were associated with BPD in our patients.
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