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Can spot urine measurement be a substitute for 24-hour urine measurement to estimate sodium intake in adolescents?

Pediatric Investigation 2021年第1期5卷 12-20页

作者： Jie Dong Xiaoyuan Zhao Hongbo Dong Yinkun Yan Jie Mi Pediatrics Research Institute of Hunan Province Hunan Children's HospitalChangshaHunanChina Department of Epidemiology Capital Institute of PediatricsBeijingChina Department of Non-communicable Disease Management Beijing Children’s HospitalCapital Medical UniversityNational Center for Children’s HealthBeijingChina

Importance:Several methods have been established in recent decades that allow use of spot urine to estimate dietary sodium ***,their accuracies have been controversial in ***:To validate the performance of three commonly used methods-the Kawasaki,Tanaka,and International Cooperative Study on Salt,Other Factors,and Blood Pressure(INTERSALT)***,this study explored the accuracies of the Tanaka and INTERSALT methods by using spot urine samples taken at four separate ***:Forty-one adolescents aged 14 to 16 years completed two non-consecutive 24-hour urine collections and their mean values were used as reference *** second-morning urine was used for assessment with the Kawasaki method;a casual spot urine and spot urine samples taken at four separate times(morning,afternoon,evening,and overnight)were used for assessment with the Tanaka and INTERSALT ***:The mean differences were 1801 mg,542 mg,47 mg,and-31 mg for the Kawasaki,Tanaka,INTERSALT 1(with potassium),and INTERSALT2(without potassium)methods with their required spot urine,*** proportions of relative difference levels within±10%were 4.9%for the Kawasaki method,19.5%for the Tanaka method,36.6%for the INTERSALT 1 method,and 36.6%for the INTERSALT2 ***:The INTERSALT method seemed to provide minimally biased estimations of mean population sodium intake with casual spot ***,there is a need to be cautious regarding inconsistencies in estimation among different levels of sodium *** methods assessed in this study were unable to accurately estimate sodium intake at the individual level.

关键词： Adolescents spot urine Sodium 24-hour urine

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Cosinor-rhythmometry for 24-h urinary sodium,potassium,creatinine excretion in the Chinese adult population

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Chinese Medical Journal 2021年第5期134卷 539-545页

作者： Ya-Guang Peng Jing-Jing Feng Ying Zhang Kun Li Si-Yu Cai Ruo-Hua Yan Xiao-Xia Peng Center for Clinical Epidemiology&Evidence-based Medicine National Center for Children's HealthBeijing Children's HospitalCapital Medical UniversityBeijing 100045China department of Nursing Administration and Rehabilitation Research National Institute of Hospital AdministrationBeijing 100044China Department of Diseases Prevention and Control Third HospitalPeking UniversityBeijing 100191China Center for Endocrine Metabolism and Immune Diseases Beijing Luhe HospitalCapital Medical UniversityBeijing 101149China

Background:The low accuracy of equations predicting 24-h urinary sodium excretion using a single spot urine sample contributed to the misclassification of individual sodium intake *** application of single spot urine sample is limited by a lack of representativity of urinary sodium excretion,possibly due to the circadian rhythm in urinary *** study aimed to explore the circadian rhythm,characteristics,and parameters in a healthy young adult Chinese population as a theoretical foundation for developing new ***:Eighty-five participants(mean age 32.4 years)completed the 24-h urine ollction by sccessively cllecing each of the single-voided specimens within 24 *** concentrations of the urinary sodium,potassium,and creatinine for cach voided specimen were *** analysis was applied to explore the circadian rhythm of the urinary sodium,potassium,and creatinine *** excretion per hour was computed for analyzing the change over time with repeated-measures analysis of variance and a cubic spline ***:The metabolism of urinary sodium,potassium,and creatinine showed different patterns of circadian rhythm,although the urinary sodiurm excretion showed non-significant parameters in the cosinor model.A significant circadian rhythm of urinary creatinine excretion was observed,while the circadian rhythm of sodium was less significant than that of *** circadian rhythm of urinary sodium and creatinine excretion showed synchronization to some extent,which had a nocturnal peak and fell to the lowest around noon to *** contrast,the peak of potassium was observed in the morning and dropped to the lowest point in the *** hourly urinary excretion followed a similar circadian ***:It is necessary to consider the circadian rhythm of urinary sodium,potassium,and creatinine excretion in adults while exploring the estimation model for 24-h urinary sodium excretion using spot urine.

关键词： Circadian rhythm Sodium urinary excretion Cosinor analysis spot urine 24-h urine

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