Perinatology.  2024 Mar;35(1):13-21. 10.14734/PN.2024.35.1.13.

Comparison Study of Respiratory Outcomes Based on Bronchopulmonary Dysplasia De finitions: Single Center Retrospective Study in South Korea

• Suh YA
• Lee HJ
• Choi S
• Park MS
• Lee JH

• KMID: 2554521
• DOI: http://doi.org/10.14734/PN.2024.35.1.13

Abstract

Objective
Bronchopulmonary dysplasia (BPD) is a significant respiratory disorder in premature infants, and its prevalence remains high at 35% to 40% of very low gestational age (<28 weeks gestation). The aim of this study is to analyze the respiratory outcomes of BPD in neonatal intensive care unit as well as respiratory outcomes over a corrected age of 18 to 24 months using 3 different definitions of BPD (National Institutes of Health [NIH] 2001, National Institute of Child Health and Human Development [NICHD] 2018 and Jensen 2019).
Methods
We conducted a study on infants under 32 weeks of gestation between 2012 and 2021 at Ajou university hospital. First, we compared the incidence of BPD, mortality, and length of hospital stays. To evaluate long-term respiratory outcomes, the number of re-admissions and prescriptions due to respiratory problems were analyzed.
Results
NIH 2001 showed an incidence of 281 (40.0%), NICHD 2018 showed 139 (19.7%), and Jensen 2019 showed 137 (19.5%). In grade III of Jensen 2019, it demonstrated the highest severity with mortality rate of 29.4% and an average length of hospital stay of 42.5 weeks. Also, it was confirmed that the period of use of invasive ventilator was the longest at 87.8±60.3 days. In the analysis of readmission and prescription counts, grade III showed statistically significant higher occurrences in both NICHD 2018 and Jensen 2019 than NIH 2001.
Conclusion
The latest definitions of BPD have demonstrated to better represent both short-term and long-term respiratory severity in premature infants less than 32 weeks.

Keyword

Bronchopulmonary dysplasia; Infant; Premature; Retrospective studies; Mortality; Respi ratory therapy