Nueva ecuación para la estimación de la natriuresis diaria a partir de parámetros en plasma y orina aislada en población chilena / A new equation to estimate daily natriuresis from parameters in plasma and spot urine sample in the Chilean population
Rev. méd. Chile
;
149(2): 178-186, feb. 2021. tab, graf
Article
Dans Espagnol
| LILACS
| ID: biblio-1389440
ABSTRACT
Background:
Excessive sodium intake is associated with increased cardiovascular morbidity and mortality. Daily sodium intake is usually inferred from sodium excretion in a 24-hour urine collection, which is cumbersome and prone to errors. Different formulas have attempted to estimate 24-hour urinary sodium from a spot urine sample. Unfortunately, their concordances are insufficient and have not been tested in our population.Aim:
To develop an equation to predict 24-hour urine sodium from parameters in plasma and spot urine samples. To validate the equation and compare it with other formulas in Chilean population. Material andMethods:
Analysis of 24-hour urine collections, plasma sample and spot urine sample from 174 adult outpatients (81% females) with an estimated glomerular filtration rate (eGFR) ≥ 60 mL/min/1.73m2. These were collected between 2015 and 2019 using standardized methods and educating patients about the correct method to collect 24 h urine samples. In all these patients, creatinine and electrolytes were measured in plasma and urine. A new equation was developed using a multiple linear regression model.Results:
Twenty-four-hour urine sodium excretion was significantly correlated with age, weight, height, eGFR, plasma osmolarity, urine electrolytes and parameters obtained from spot urine sample, among others. The new equation had a linear correlation with 24-hour natriuresis of 0.91 and the concordance was 0.9. The predictive capacity of the new equation was better than the existing formulas.Conclusions:
We developed a formula to accurately predict daily natriuresis in the Chilean population.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Sodium
/
Natriurèse
Type d'étude:
Étude pronostique
Limites du sujet:
Adulte
/
Femelle
/
Humains
/
Mâle
Pays comme sujet:
Amérique du Sud
/
Chili
langue:
Espagnol
Texte intégral:
Rev. méd. Chile
Thème du journal:
Médicament
Année:
2021
Type:
Article
Pays d'affiliation:
Chili
Institution/Pays d'affiliation:
Pontificia Universidad Católica de Chile/CL
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