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논문 기본 정보

자료유형
학술저널
저자정보
Kim Eun Sun (Department of Pediatrics Kangwon National University School of Medicine Chuncheon Korea.) Ee Kyung Kim (Seoul National University College of Medicine) Kim Sae Yun (Department of Pediatrics Yeouido St. Mary's Hospital The Catholic University of Korea Seoul Korea.) In Gyu Song (Seoul National University College of Medicine) Jung Young Hwa (Department of Pediatrics Seoul National University Bundang Hospital Seongnam Korea.) Seung Han Shin (Seoul National University College of Medicine) Han-Suk Kim (Seoul National University College of Medicine) Kim Johanna Inhyang (Department of Psychiatry Hanyang University Medical Center Seoul Korea.) Kim Bung Nyun (Department of Psychiatry and Behavioural Science Seoul National University College of Medicine Seou) Shin Min-Sup (Department of Psychiatry and Behavioural Science Seoul National University College of Medicine Seou)
저널정보
대한의학회 Journal of Korean Medical Science Journal of Korean Medical Science Vol.36 No.39
발행연도
2021.10
수록면
1 - 14 (14page)
DOI
10.3346/jkms.2021.36.e260

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Background: School-aged children born very preterm have been suggested to have worse cognitive and behavioral outcomes than children born full-term. Executive function (EF) is a higher level of cognitive function related to academic achievement. The present study aimed to evaluate the cognitive (including EF) and behavioral outcomes of Korean children born extremely preterm (EP) and to analyze any biological or socioeconomic risk factors for poor cognitive outcomes in this population. Methods: A total of 71 infants weighing < 1,000 g at birth or born before 30 weeks of gestation (EP group) who were admitted to the neonatal intensive care unit from 2008 to 2009 were included in this study and compared with 40 term-birth controls. The Korean Wechsler Intelligence Scale for Children-Fourth Edition, Advanced Test of Attention (ATA), Stroop test, Children's Color Trails Test (CCTT), and Wisconsin Card Sorting Test (WCST) were used. Additionally, the Korean Child Behavior Checklist (K-CBCL) and Korean ADHD Rating Scale (K-ARS) were completed. Perinatal and demographic data were collected and analyzed. Results: The mean full-scale intelligence quotient (FSIQ) score in the EP group was significantly lower than that of the term control group (89.1 ± 18.3 vs. 107.1 ± 12.7; P < 0.001). In the EP group, 26 (37%) children had an FSIQ score below 85, compared to only one child (3%) in the control group. Furthermore, the EP group showed significantly worse EF test results (ATA, Stroop test, CCTT, WCST). Except for the higher social immaturity subscore in the EP group, the K-CBCL and K-ARS scores were not different between the two groups. EP children who received laser treatment for retinopathy of prematurity (ROP) had an 8.8-fold increased risk of a low FSIQ score, and a 1-point increase in the discharge weight Z-score decreased the risk of a low FSIQ score by approximately half in this EP cohort. Conclusion: This is the first Korean study to investigate the cognitive and behavioral outcomes of school-aged children born EP. In the study cohort, EP children exhibited significantly lower FSIQ scores and EF than their full-term peers, and 37% of them had cognitive problems. Nonetheless, except for social immaturity, the behavioral problems were not different in EP children. Severe ROP and low discharge weight Z-score were identified as independent risk factors for low FSIQ score after adjusting for birth weight.

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