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Updated: Jun 1, 2026

International Expert Consensus and Recommendations for Neonatal Pneumothorax Ultrasound Diagnosis and Ultrasound-guided Thoracentesis Procedure
Published on: March 12, 2020
Risk factors for bronchopulmonary dysplasia in neonates born at ≤ 1500 g (1999-2009)
Hongshan Zhang1, Jianpei Fang, Haobin Su
1Department of Pediatrics, Second Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China. ywh1998@21cn.com
Insights
Bronchopulmonary dysplasia (BPD) affects nearly half of very low-birthweight infants despite improved perinatal care. Key risk factors include early gestational age, maternal chorioamnionitis, pneumonia, and multiple blood transfusions.
Area of Science:
- Neonatology
- Perinatal Medicine
- Pediatric Pulmonology
Background:
- Despite advances in perinatal care, the incidence of bronchopulmonary dysplasia (BPD) remains high in very low-birthweight (VLBW) infants.
- Improving survival rates for VLBW infants necessitates understanding and mitigating BPD risk factors.
Purpose of the Study:
- To identify perinatal risk factors associated with the development of BPD in neonates weighing ≤ 1500 grams.
Main Methods:
- A retrospective analysis was conducted on data from neonates born at ≤ 1500 g between 1999 and 2009.
- Data were collected from the neonatal intensive care unit (NICU) of the Second Affiliated Hospital of Sun Yat-Sen University in Guangzhou, China.
Main Results:
- The study included 149 preterm infants born at ≤ 1500 g, with a 48.3% incidence of BPD and a 77.8% survival rate at 28 days.
- Logistic regression identified gestational age ≤ 30 weeks, maternal chorioamnionitis, ventilation-associated pneumonia, and more than three blood transfusions as significant risk factors for BPD.
Conclusions:
- The study provides clinical evidence for significant perinatal risk factors contributing to BPD in VLBW neonates.
- Identifying these risk factors can inform further research and clinical strategies to reduce BPD incidence and improve VLBW infant outcomes.
Background:
Advances in perinatal care have improved the survival rate for very low-birthweight (VLBW) infants in China. The incidence of bronchopulmonary dysplasia (BPD), however, has not been reduced. The objective of the present study was to identify the perinatal risk factors for BPD in neonates born at ≤ 1500 g.
Methods:
A retrospective analysis of data for neonates born at ≤ 1500 g between 1999 and 2009 in the neonatal intensive care unit (NICU) of Second Affiliated Hospital of Sun Yat-Sen University, Guangzhou city, China, was carried out.
Results:
Out of a total of 11,506 live births, 3538 infants were admitted to level II nursery and NICU (level III nursery). Among 149 preterm infants born at ≤ 1500 g, 77.8% survived until day 28, and the incidence of BPD was 48.3%. Logistic regression analysis showed that gestational age (GA) ≤ 30 weeks (odds ratio [OR], 9.507; 95% confidence intervals [95%CI]: 2.604-34.707), maternal chorioamnionitis (OR, 41.987; 95%CI: 6.048-291.492), ventilation-associated pneumonia (OR, 11.600; 95%CI: 2.847-47.268), and more than three blood transfusions (OR, 10.214; 95%CI: 2.191-47.623) were associated with the development of BPD.
Conclusion:
Clinical evidence has been provided for possibly significant risk factors associated with BPD in neonates born at ≤ 1500 g, which can provide useful information for further research to improve survival of VLBW infants and decrease the incidence of BPD.
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