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Growth patterns over 2 years after birth according to birth weight and length percentiles in children born preterm

Annals of Pediatric Endocrinology & Metabolism 2020년 25권 3호 p.163 ~ 168
김슬기, 최유정, 이선화, 안문배, 김신희, 조원경, 조경순, 정민호, 서병규,
소속 상세정보
김슬기 ( Kim Seul-Ki ) - Catholic University College of Medicine Department of Pediatrics
최유정 ( Choi Yu-Jung ) - Catholic University College of Medicine Department of Pediatrics
이선화 ( Lee Seon-Hwa ) - Catholic University College of Medicine Department of Pediatrics
안문배 ( Ahn Moon-Bae ) - Catholic University College of Medicine Department of Pediatrics
김신희 ( Kim Shin-Hee ) - Catholic University College of Medicine Department of Pediatrics
조원경 ( Cho Won-Kyung ) - Catholic University College of Medicine Department of Pediatrics
조경순 ( Cho Kyung-Soon ) - Catholic University College of Medicine Department of Pediatrics
정민호 ( Jung Min-Ho ) - Catholic University College of Medicine Department of Pediatrics
서병규 ( Suh Byung-Kyu ) - Catholic University College of Medicine Department of Pediatrics

Abstract


Purpose: To analyze growth patterns over 2 years after birth according to preterm infant birth weight and length percentiles.

Methods: Anthropometric measurements of 82 preterm infants were retrospectively reviewed. Preterm infants with birth weight or length below the 10th percentile were classified as small for gestational age (SGA) (n=19) and those between the 10th and 89th percentile as appropriate for gestational age (AGA) (n=63). The association between the length standard deviation score (SDS) at 2 years of corrected age and clinical factors were analyzed.

Results: The length SDS of the SGA group was significantly increased at 6 months (-1.30±1.71) and 24 months (-0.97±1.06) of corrected age. The length SDS was lower in the SGA group than those in the AGA group at 6 months (-1.30±1.71 vs. -0.25±1.15, P=0.004), 18 months (-0.97±1.39 vs. -0.03±1.29, P=0.015), and 24 months (-0.97±1.06 vs. -0.29±1.12, P=0.022,). The percentage of children with a length SDS of <-2 (growth failure) at 24 months was 15.8% in the SGA group and 4.8% in the AGA group (P=0.108). Multiple linear regression analysis demonstrated that length at 24 months of corrected age was negatively correlated with birth length below the 10th percentile (coefficient β=-0.91, P=0.001) and duration of stay in the neonatal intensive care unit (NICU) (coefficient β=-0.01, P=0.001).

Conclusions: Despite the fact that catch-up growth occurs during the early period of infancy in a large portion of preterm SGA infants, a significant portion of these infants show growth failure at 24 months of age. Growth over 2 years after birth is affected by birth length and duration of stay in the NICU in preterm children.

키워드

Prematurity; Small for gestational age; Catch-up growth

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