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J Korean Soc Matern Child Health > Volume 22(1); 2018 > Article
Journal of The Korean Society of Maternal and Child Health 2018;22(1):45-52.
DOI: https://doi.org/10.21896/jksmch.2018.22.1.45    Published online January 31, 2018.
Neonatal and Maternal Clinical Characteristics of Late Preterm Births: Single Center Data
Su Hyang Lee, Ha Jin Oh, Eun Song Song, Young Youn Choi
Department of Pediatrics, Chonnam University Hospital, Gwangju, Korea
후기 조산아와 산모의 임상적 특징: 단일기관 자료
이수향, 오하진, 송은송, 최영륜
전남대학교병원 소아청소년과
Correspondence:  Young Youn Choi,
Email: yychoi@jnu.ac.kr
Abstract
Department of Pediatrics, Chonnam University Medical School, Gwangju, Korea2 Purpose: Recently, the number of late preterm infants are increasing, and they are prone to have many clinical problems. The purpose of this study is to emphasize the importance of perinatal care for the late preterm infants and their mothers.
Methods
Total admitted numbers of late preterm infants were 547 (from 464 mothers) and of term infants were 1,514 (from 1,470 mothers) in NICU, at Chonnam National University Hospital January 2014~December 2015. Maternal and neonatal mortality rate were calculated in the total admitted numbers. Exclusion criteria were death or transfer during admission, congenital anomaly, and etc. The enrolled numbers of late preterm infants were 493 (from 418 mothers) and of term infants were 1,167 (from 1,123 mothers). Retrospective chart review was conducted. In mothers, demographics, underlying illness, and obstetric complication, and in newborns, demographics, hospital days and morbidity were compared between late preterm group and term group.
Results
Maternal mortality rate was not different. However, neonatal mortality rate was higher in late preterm infants. In mothers of late preterm group, there was no difference in demographic characteristics, but the rates of autoimmune disease and obstetric complication were higher. In infants of late preterm group, body size was smaller, artificial conception and C-section rate were higher, and one and five-minute Apgar scores were lower, and hospital duration was longer. And the incidence of respiratory distress, transient tachypena of newborn, intraventricular hemorrhage and metabolic abnormalities were higher, but the incidence of meconium aspiration syndrome was lower compare to the term infant group.
Conclusion
Maternal mortality was not different. However, neonatal mortality was higher in late preterm infants. In late preterm group, the mothers had higher rate of autoimmune disease and obstetric complication, and the infants had higher morbidity compare to the term group. When the obstetrician decides on delivery time in high risk pregnancy, maternal medical condition and neonatal outcome should be considered.
Key Words: late preterm infants, mortality, obstetric complication, morbidity
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