Dynamics of Urine Electrolytes in Term Neonates during the 1st Week of Life

Background Urine electrolyte assessment is vital for diagnosing and managing neonatal conditions. However, the challenge of urine collection in neonates has resulted in a lack of standardized urine electrolyte reference values. Aim This study seeks to explore the reference levels and potential trend...

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Main Authors: Sheng-Yuan Ho, Kai-Li Wang, Hueng-Chuen Fan, Jhao-Jhuang Ding
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2024-10-01
Series:Journal of Medical Sciences
Subjects:
Online Access:https://journals.lww.com/10.4103/jmedsci.jmedsci_8_24
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author Sheng-Yuan Ho
Kai-Li Wang
Hueng-Chuen Fan
Jhao-Jhuang Ding
author_facet Sheng-Yuan Ho
Kai-Li Wang
Hueng-Chuen Fan
Jhao-Jhuang Ding
author_sort Sheng-Yuan Ho
collection DOAJ
description Background Urine electrolyte assessment is vital for diagnosing and managing neonatal conditions. However, the challenge of urine collection in neonates has resulted in a lack of standardized urine electrolyte reference values. Aim This study seeks to explore the reference levels and potential trends in serum and urine electrolytes to better understand how the kidneys handle these substances. Methods Healthy neonates were prospectively enrolled following normal births. Using biochemical methods, blood and urine samples were collected and analyzed on the 1st and 5th postnatal days. Statistical analysis was performed using descriptive statistics and the Wilcoxon matched-pairs signed-rank test. Results This prospective study enrolled 55 healthy neonates. Significant changes in serum electrolyte concentrations were observed between the 1st and 5th days after birth. Notably, sodium, creatinine, urea nitrogen, and uric acid levels decreased, whereas potassium, calcium, and phosphate levels increased. Urine analysis revealed significant increases in the tubular maximum phosphate reabsorption per glomerular filtration rate and decreases in the fractional excretion of potassium and uric acid by Day 5. Conclusion This study challenges prevailing assumptions about the stability of neonatal urine electrolytes and highlights dynamic changes in the first postnatal week. These insights lay the groundwork for further research into electrolyte disorders in newborns and have potential implications for improving neonatal care practices.
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spelling doaj-art-82a8689e6efd43f0bf8feef98165825b2025-08-20T02:12:42ZengWolters Kluwer Medknow PublicationsJournal of Medical Sciences1011-45642542-49392024-10-0144521622110.4103/jmedsci.jmedsci_8_24Dynamics of Urine Electrolytes in Term Neonates during the 1st Week of LifeSheng-Yuan HoKai-Li WangHueng-Chuen FanJhao-Jhuang DingBackground Urine electrolyte assessment is vital for diagnosing and managing neonatal conditions. However, the challenge of urine collection in neonates has resulted in a lack of standardized urine electrolyte reference values. Aim This study seeks to explore the reference levels and potential trends in serum and urine electrolytes to better understand how the kidneys handle these substances. Methods Healthy neonates were prospectively enrolled following normal births. Using biochemical methods, blood and urine samples were collected and analyzed on the 1st and 5th postnatal days. Statistical analysis was performed using descriptive statistics and the Wilcoxon matched-pairs signed-rank test. Results This prospective study enrolled 55 healthy neonates. Significant changes in serum electrolyte concentrations were observed between the 1st and 5th days after birth. Notably, sodium, creatinine, urea nitrogen, and uric acid levels decreased, whereas potassium, calcium, and phosphate levels increased. Urine analysis revealed significant increases in the tubular maximum phosphate reabsorption per glomerular filtration rate and decreases in the fractional excretion of potassium and uric acid by Day 5. Conclusion This study challenges prevailing assumptions about the stability of neonatal urine electrolytes and highlights dynamic changes in the first postnatal week. These insights lay the groundwork for further research into electrolyte disorders in newborns and have potential implications for improving neonatal care practices.https://journals.lww.com/10.4103/jmedsci.jmedsci_8_24urinecalciumphosphateuric acidsodiumpotassiumchlorideneonate
spellingShingle Sheng-Yuan Ho
Kai-Li Wang
Hueng-Chuen Fan
Jhao-Jhuang Ding
Dynamics of Urine Electrolytes in Term Neonates during the 1st Week of Life
Journal of Medical Sciences
urine
calcium
phosphate
uric acid
sodium
potassium
chloride
neonate
title Dynamics of Urine Electrolytes in Term Neonates during the 1st Week of Life
title_full Dynamics of Urine Electrolytes in Term Neonates during the 1st Week of Life
title_fullStr Dynamics of Urine Electrolytes in Term Neonates during the 1st Week of Life
title_full_unstemmed Dynamics of Urine Electrolytes in Term Neonates during the 1st Week of Life
title_short Dynamics of Urine Electrolytes in Term Neonates during the 1st Week of Life
title_sort dynamics of urine electrolytes in term neonates during the 1st week of life
topic urine
calcium
phosphate
uric acid
sodium
potassium
chloride
neonate
url https://journals.lww.com/10.4103/jmedsci.jmedsci_8_24
work_keys_str_mv AT shengyuanho dynamicsofurineelectrolytesintermneonatesduringthe1stweekoflife
AT kailiwang dynamicsofurineelectrolytesintermneonatesduringthe1stweekoflife
AT huengchuenfan dynamicsofurineelectrolytesintermneonatesduringthe1stweekoflife
AT jhaojhuangding dynamicsofurineelectrolytesintermneonatesduringthe1stweekoflife