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Small for gestational age birth may increase airflow limitation in bronchopulmonary dysplasia

Authors
 Yoon Hee Kim  ;  Kyung Won Kim  ;  Ho Sun Eun  ;  Jung Eun Shin  ;  In Suk Sol  ;  Soo Yeon Kim  ;  Young Suh Kim  ;  Myung Hyun Sohn  ;  Ran Namgung 
Citation
 PEDIATRIC PULMONOLOGY, Vol.55(2) : 346-353, 2020 
Journal Title
 PEDIATRIC PULMONOLOGY 
ISSN
 8755-6863 
Issue Date
2020
Keywords
bronchopulmonary dysplasia ; multiple breath washout ; premature ; small for gestational age ; tidal breathing ratio
Abstract
OBJECTIVES: To determine significant indices for assessing the pulmonary function of infants according to bronchopulmonary dysplasia (BPD) severity and to evaluate whether small for gestational age (SGA) could affect pulmonary function in BPD. METHODS: We evaluated 117 preterm infants who had undergone tidal breathing flow-volume loop and multiple-breath washout analyses within 7 months after birth. We categorized preterm infants according to BPD severity into mild/moderate BPD (n = 86), severe BPD (n = 21), and without BPD (n = 10) and the presence of SGA or appropriate gestational age (AGA) using the Fenton growth chart. We evaluated nine healthy term infants as controls. RESULTS: The tidal breathing ratio (time to peak expiratory flow/expiratory time [tPEF /tE ]) was significantly lower in infants with severe BPD than in those with mild/moderate BPD. Lung clearance index (LCI) was not different based on BPD severity. In the correlation analysis after adjusting for gestational age and sex, tPEF /tE was correlated with the duration of mechanical ventilation (r = -0.347, P < .001) and the duration of oxygen supply (r = -0.248, P = .013) in infants with BPD. The proportion of "lower tPEF /tE ," defined as below the cut-off value, was greater in SGA infants (P = .017), while no significant difference was seen in the percentage of "higher LCI," defined as above the cut-off value between SGA and AGA infants. CONCLUSIONS: In infants with BPD, tPEF /tE could be a useful pulmonary index which shows lower values in severe BPD. The finding of SGA in infants with BPD could be associated with poor pulmonary function related to the tPEF /tE values.
Full Text
https://onlinelibrary.wiley.com/doi/full/10.1002/ppul.24580
DOI
10.1002/ppul.24580
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Pediatrics (소아청소년과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyung Won(김경원) ORCID logo https://orcid.org/0000-0003-4529-6135
Kim, Soo Yeon(김수연) ORCID logo https://orcid.org/0000-0003-4965-6193
Kim, Yoon Hee(김윤희) ORCID logo https://orcid.org/0000-0002-2149-8501
Namgung, Ran(남궁란) ORCID logo https://orcid.org/0000-0001-7182-9535
Sohn, Myung Hyun(손명현) ORCID logo https://orcid.org/0000-0002-2478-487X
Shin, Jeong Eun(신정은) ORCID logo https://orcid.org/0000-0002-4376-8541
Eun, Ho Seon(은호선) ORCID logo https://orcid.org/0000-0001-7212-0341
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/175237
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