Evaluación de la ingesta dietética y excreción urinaria de sodio y potasio en adultos / Assessment of dietary intake and urinary excretion of sodium and potassium in adults
Rev. méd. Chile
;
142(6): 687-695, jun. 2014. graf, tab
Artículo
en Español
| LILACS
| ID: lil-722917
ABSTRACT
Background:
Hypertension is associated with elevated sodium and low potassium intakes. The determination of sodium and potassium intake by dietary records is inaccurate, being its measurement from 24-h urine collection the reference method.Aim:
To determine urinary sodium and potassium excretion in adults. To compare dietary sodium and potassium intake and their excretion from an isolated urine sample against the reference method. Material andMethods:
Seventy healthy adults aged 35 ± 8 years with a body mass index 25 ± 2 kg/m² (36 women) were studied. Urine was collected over 24 h, including an isolated urine sample taken in fasting conditions. Additionally, three 24-h dietary records were performed.Results:
Reported sodium and potassium intake was 2,720 ± 567 and 1,068 ± 433 mg/day, respectively. In turn, urinary excretion of sodium and potassium was 4,770 ± 1,532 and 1,852 ± 559 mg/day, respectively. These latter values were significantly higher than those obtained by dietary records. Furthermore, the urinary sodium and potassium excretion estimated from an isolated urine sample was 4,839 ± 1,355 and 1,845 ± 494 mg/day, respectively. These values were similar to those obtained with a 24 h urine collection.Conclusions:
Dietary records underestimated electrolyte intake when compared with the reference method. Using an isolated urine sample to estimate electrolyte intake may be a reliable alternative.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Sodio en la Dieta
/
Potasio en la Dieta
/
Cloruro de Sodio Dietético
Límite:
Adulto
/
Femenino
/
Humanos
/
Masculino
País/Región como asunto:
America del Sur
/
Chile
Idioma:
Español
Revista:
Rev. méd. Chile
Asunto de la revista:
Medicina
Año:
2014
Tipo del documento:
Artículo
País de afiliación:
Chile
Institución/País de afiliación:
Universidad de Chile/CL
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