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
Article
in Es
| LILACS
| ID: lil-722917
Responsible library:
CL1.1
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.Key words
Full text:
1
Collection:
01-internacional
Database:
LILACS
Main subject:
Sodium, Dietary
/
Potassium, Dietary
/
Sodium Chloride, Dietary
Limits:
Adult
/
Female
/
Humans
/
Male
Country/Region as subject:
America do sul
/
Chile
Language:
Es
Journal:
Rev. méd. Chile
Journal subject:
MEDICINA
Year:
2014
Document type:
Article
Affiliation country:
Chile
Country of publication:
Chile