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A Study on the Renal Function in Neonates and Children.

Journal of the Korean Pediatric Society 1983;26(8):744-750.
Published online August 31, 1983.
A Study on the Renal Function in Neonates and Children.
In Soo Choi1, Young Sook Kim1, Soo Chul Cho1, Jung Soo Kim1, Kyung Woo Cho2
1Dept, of Pediatrics, Jeonbug National University Medical School
2Dept, of Physiology, Jeonbug National University Medical School
신생아 및 소아의 신장기능에 관한 연구
최인수1, 장영숙1, 조수철1, 김정수1, 조경우2
1전북대학교 의과대학 소아과학교실
2전북대학교 의과대학 생리학교실
Abstract
A study on the renal function and its changes by aging in neonates and children has been done, and the result obtained were as follow. 1) Urinary output, creatinine and electrolyte excretion in neonates (age: 12 〜 24 hrs) were significantly lower than children over 1 〜2 yrs, and urine concentrating ability may not yet t>e matured. 2) Urinary output, creatinine and electrolyte excretion in children (age: 1 〜 10 yrs) increased l)y aging, and reached near the adult value at 9〜 10 yrs old. 3) Urine concentrating ability and sodium, chloride reabsorptive capacity were almost matu-red at 3 〜4 yrs old. 4) Circardian rhythm in the renal function seemed to be matured already at 1 〜4 yrs of age, and its function was supressed during the night. 5) There was intimate intercoorelationship between nocturnal and 24 hrs renal function, so the findings of nocturnal urine could be used as an index of renal function.
Key Words: Renal Function, Developmental Change.


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