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Updated: Sep 27, 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
Bronchopulmonary dysplasia is associated with polyhydramnios in a scan for novel perinatal risk factors
Meredith S Campbell1, Lisa A Bastarache2, Sara L Van Driest1
1Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA.
Insights
Polyhydramnios, or excess amniotic fluid, is linked to a higher risk of bronchopulmonary dysplasia in premature infants. This finding aids in identifying high-risk newborns for better care.
Area of Science:
- Neonatal Medicine
- Perinatal Epidemiology
Background:
- Bronchopulmonary dysplasia (BPD) pathogenesis is complex with limited data on prenatal risk factors.
- Identifying prenatal exposures associated with BPD is crucial for early intervention.
Purpose of the Study:
- To investigate the association between prenatal exposures and the risk of developing BPD.
- To evaluate polyhydramnios as a potential clinical indicator for BPD risk.
Main Methods:
- Parallel analyses using a logistic regression model on a curated registry of 4527 infants.
- Phenome-wide association study (PheWAS) using ICD-9/10 codes to analyze 94 maternal diagnosis phecodes.
- Examined 20 prenatal exposures from a neonatal intensive care unit (NICU) registry.
Main Results:
- Polyhydramnios showed a significant association with increased BPD risk in both registry and PheWAS analyses (OR 5.70, p < 1.37×10⁻⁶).
Conclusions:
- Polyhydramnios may serve as a clinical indicator for preterm infants at elevated risk of BPD.
- Combining curated registry data with PheWAS analysis is a valuable tool for generating hypotheses on perinatal risk factors.
Background:
The pathogenesis of bronchopulmonary dysplasia (BPD) is multifactorial, and there are limited data about prenatal exposures and risk of BPD.
Study Design:
Our study performed parallel analyses using a logistic regression model in a cohort of 4527 infants with data from a curated registry and using a phenome wide association study (PheWAS) based on ICD9/10-based phecodes. We examined 20 prenatal exposures from a neonatal intensive care unit (NICU) curated registry database related to pregnancy and maternal health as well as 94 maternal diagnosis phecodes with a PheWAS analysis.
Result:
In both the curated registry and PheWAS analyses, polyhydramnios was associated with an increased risk of BPD (OR 5.70, 95% CI 2.78-11.44, p = 1.37 × 10-6).
Conclusion:
Our data suggest that polyhydramnios may be a clinical indicator of premature infants at increased risk for bronchopulmonary dysplasia. Combining curated registry data with PheWAS analysis creates a valuable tool to generate hypotheses.
Impact:
Polyhydramnios was significantly associated with bronchopulmonary dysplasia in both a curated registry and by ICD coding analysis with a phenome wide association study (PheWAS). Preterm polyhydramnios may be a clinical indicator of infants at increased risk for developing bronchopulmonary dysplasia after preterm birth. Combining curated registry with PheWAS analysis creates a valuable tool to generate hypotheses about perinatal risk factors and morbidities associated with preterm birth.
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