[Relationship between salt intake and urinary electrolyte elimination over a 24 hour period in children].
This study was undertaken to estimate daily salt intake by measuring urinary electrolyte excretion in 203 healthy children with age of 0-17 years. Daily sodium excretion increased steadily with advancing age from 7.56 +/- 4.02 (mean +/- S.E.) (mmol/die) in infancy to 43.7 +/- 22.6 at 1-3 years, and to 164.70 +/- 74.70 at 15-17 years respectively. The corresponding values of daily potassium excretion were 13.93 +/- 6.30, 7.12 +/- 4.70 and 30.90 +/- 31.20 mmol/die at the respective ages. When expressed per kg body weight sodium excretion proved to be the highest at 5-7 years of age, while the maximum of potassium excretion was seen during infancy. As a result, the sodium to potassium ratio increased significantly from 0.62 during infancy to 6.50 at age of 1-3 years without consistent change later on. No significant difference could be detected in electrolyte excretion between the groups with normo-or hypertension. The marked elevation of daily sodium excretion and sodium to potassium ratio occurring after one year of age may be accounted for by the introduction of adult type feeding pattern.
Györke
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Baranya Megyei Tanács Gyermekkórház, Pécs.
D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D002940:Circadian Rhythm; D004231:Diuresis; D004573:Electrolytes / Q000652:urine; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D011188:Potassium / Q000652:urine; D012964:Sodium / Q000652:urine; D012982:Sodium, Dietary / Q000008:administration & dosage* / Q000378:metabolism
D004573:Electrolytes; D012982:Sodium, Dietary; D012964:Sodium; D011188:Potassium
Osszefüggés a sóbevitel és a 24 órás elektrolitürítés között gyermekkorban.