Abstract
Objective
The primary aim was to evaluate whether the addition of the posterior lung aided in diagnostic accuracy of predicting bronchopulmonary dysplasia (BPD) vs moderate-severe BPD (msBPD); the secondary aim was to explore the diagnostic accuracy of two protocols for BPD vs msBPD.
Study design
This was a single-center prospective observational study. Preterm infants with a gestational age ≤ 25 weeks were included. Two LUS score protocols were evaluated on the 14th day of life (DOL): (A) evaluating the anterolateral (LUS score-al) lung and (B) the anterolateral combined with posterior (LUS score-alp) lung. The LUS score range for the two protocols was 0–32 and 0–48, respectively.
Results
A total of eighty-nine infants were enrolled. Both the LUS score-al and LUS score-alp were higher in neonates developing BPD and msBPD than in the rest of the cohort (LUS score-al 24 (23,26) vs 22 (20,23); LUS score-alp 36 (34,39) vs 28 (25,32)) (LUS score-al 25 (24,26) vs 23 (21,24); LUS score-alp 40 (39,40) vs 34 (28,36)). The LUS score-al on the 14th DOL showed a moderate diagnostic accuracy to predict BPD and msBPD (AUC 95% CI: 0.797 [0.697–0.896]; 0.811[0.713–0.909]), while the LUS score-alp significantly improved diagnostic accuracy of BPD and msBPD (AUC 95% CI: 0.902 [0.834–0.970]; 0.922 [0.848–0.996]). A cutoff of 25 points in the LUS score-al provided a sensitivity, specificity, positive likelihood ratio, and negative likelihood ratio of 76.9%, 79.4%, 3.7, and 0.3 respectively to predict msBPD. Meanwhile, that of 39 points in the LUS score-alp provided a sensitivity, specificity, positive likelihood ratio, and negative likelihood ratio of 81%, 98.4%, 50.5 and 0.19 to predict msBPD, respectively.
Conclusions
The LUS score on the 14th DOL can predict BPD and msBPD with moderate diagnostic accuracy. Apart from that, scanning posterior enhanced diagnostic accuracy.
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Data availability
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
We would like to thank the staff who participated in this study.
Funding
This study is supported by Shenzhen Science and Technology Program (JCYJ20190809170009528 to CX), Shenzhen Fund for Guangdong Provincial High-level Clinical Key Specialties (SZGSP009) and Sanming Project of Medicine in Shenzhen (SZSM201612045).
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Each author made substantial contributions to conception and design, acquisition of data, or analysis and interpretation of data. CY conceived and designed the study. ZH, YF, XC, YY, YH, and HY acquired data and analyzed data. The preliminary draft of the manuscript was prepared by HZ, YF, XC, and YY. All authors gave their approval for the final version of the manuscript.
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This study was reviewed by the hospital’s ethics committee (no. SFYLS2019119). Informed consent was provided by each child’s immediate family or guardian before the examination. The study was approved by the Ethics Committee of the Shenzhen Maternity & Child Healthcare Hospital. Oral and written informed consent was obtained from the parents.
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Zong, H., Huang, Z., Fu, Y. et al. Lung ultrasound score as a tool to predict severity of bronchopulmonary dysplasia in neonates born ≤25 weeks of gestational age. J Perinatol 44, 273–279 (2024). https://doi.org/10.1038/s41372-023-01811-4
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DOI: https://doi.org/10.1038/s41372-023-01811-4