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Updated: Jul 12, 2025

Protocol and Guidelines for Point-of-Care Lung Ultrasound in Diagnosing Neonatal Pulmonary Diseases Based on International Expert Consensus
Published on: March 6, 2019
Risk factors for bronchopulmonary dysplasia infants with respiratory score greater than four: a multi-center,
Yan-Ping Xu1, Zheng Chen1, Robert M Dorazio2
1NICU, Children's Hospital, Zhejiang University School of Medicine and National Clinical Research Center for Child Health, 3333 Binsheng Road, Hangzhou, 310052, China.
Insights
Post-natal inflammation significantly increases the risk of severe Bronchopulmonary dysplasia (BPD) in preterm infants. Key risk factors include late-onset sepsis, ventilator-associated pneumonia, and necrotizing enterocolitis.
Area of Science:
- Neonatology
- Pediatric critical care
- Respiratory medicine
Background:
- Bronchopulmonary dysplasia (BPD) is a common complication of prematurity, influenced by both pre- and post-natal factors.
- Identifying modifiable risk factors is crucial for improving outcomes in preterm infants.
Purpose of the Study:
- To investigate the association between inflammation-related factors and the risk of developing BPD in preterm infants.
- To identify specific post-natal risk factors contributing to severe BPD.
Main Methods:
- A prospective, longitudinal cohort study involving 1088 preterm infants (gestational age < 32 weeks) from 25 hospitals in China.
- Infants were assessed for BPD and its severity at 36 weeks post-menstrual age.
- Statistical analysis, including logistic regression, was used to identify risk factors.
Main Results:
- Six factors were significantly associated with severe BPD: lower birth weight, surfactant treatment, high mean airway pressure (MAP ≥ 12 cm H2O), late-onset sepsis (LOS), ventilator-associated pneumonia (VAP), and necrotizing enterocolitis (NEC).
- Post-natal inflammation-related factors like LOS, VAP, and NEC showed a strong association with increased BPD severity.
- Ventilator-associated pneumonia (VAP) had the highest odds ratio (18.236) for severe BPD.
Conclusions:
- Post-natal inflammation-related factors are significantly associated with an increased risk of severe BPD in preterm infants.
- Targeting and mitigating post-natal inflammatory complications may be key to reducing BPD severity.
- Regional variations in BPD risk highlight the need for localized prevention strategies.
Abstract:
Bronchopulmonary dysplasia (BPD) is the most common complication of prematurity involving both pre- and post-natal factors. A large, prospective, longitudinal cohort study was conducted to determine whether inflammation-related factors are associated with an increased risk of BPD in preterm infants who were born at a gestational age < 32 weeks, < 72 h after birth and respiratory score > 4. The study included infants from 25 participating hospitals in China between March 1, 2020 and March 31, 2022. The primary outcomes were BPD and severity of BPD at 36 weeks post-menstrual age. A total of 1362 preterm infants were enrolled in the study. After exclusion criteria, the remaining 1088 infants were included in this analysis, of whom, 588 (54.0%) infants were in the BPD group and 500 (46.0%) were in the non-BPD group. In the BPD III model, the following six factors were identified: birth weight (OR 0.175, 95% CI 0.060-0.512; p = 0.001), surfactant treatment (OR 8.052, 95% CI 2.658-24.399; p < 0.001), mean airway pressure (MAP) ≥ 12 cm H2O (OR 3.338, 95% CI 1.656-6.728; p = 0.001), late-onset sepsis (LOS) (OR 2.911, 95% CI 1.514-5.599; p = 0.001), ventilator-associated pneumonia (VAP) (OR 18.236, 95% CI 4.700-70.756; p < 0.001) and necrotizing enterocolitis (NEC) (OR 2.725, 95% CI 1.182-6.281; p = 0.019). Premature infants remained at high risk of BPD and with regional variation. We found that post-natal inflammation-related risk factors were associated with an increased risk of severe BPD, including LOS, VAP, NEC, MAP ≥ 12 cm H2O and use of surfactant.
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