All issues > Volume 17(1); 1974

Original Article

J Korean Pediatr Soc. 1974;17(1):28-36. Published online January 31, 1974.

Study on Cation-Anion Composition of Urine in Normal Preschool Children

Sung Won Park, M.D.¹

¹Department of Pediatrics, College of Medicine, Seoul National University

Abstract

The 24 hour urinary excretion of creatinine, sodium, potassium, calcium, titrable acidity, ammonia, chloride and phosphate in 28 normal preschool children from 4 to 6 years of age was measured' with aims to investigate the cation-anion composition in urine. The results obtained are as follows; 1. The average amount of sodium chloride excretion was 4.7 gm/d, suggestive of excessive intake of salt in preschool children. 2. The average amount of potassium excretion was 7.8土5 5 mEq/d, which is about equivalent: to daily amount of obligatory loss in this age. 3. The average excretion of calcium was 62.9±46.6 mg/d. 4. Excretion of titrable acidity and ammonia was 9.4±2.0 mEq/d and 265.4±82.1 mg/drespectively. 5. Phosphate excretion was 254.0±89.2 mg/d. 6. The major component of cation in urine was sodium which occupies about. 71% of all cationsin urine, and that of anion in urine was chloride, being 60.5% of all anions in urine. The proportion of titrable acidity and ammonia was found to be 20.5% of all cations in urine.

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