Resumen

LUGO, Gustavo; MORENO, Greysi; MARCANO, Gilmary  y  LOPEZ, Michelle. Relationship between diet acid load and acid-base status in children with Chronic Kidney Disease. Arch Venez Puer Ped [online]. 2016, vol.79, n.3, pp.92-98. ISSN 0004-0649.

Progression of chronic kidney disease (CKD) can be accelerated by metabolic acidosis, which may be influenced by diet. The aim of this study was to determine the Potential Renal Acid Load (PRAL) in children with CKD and establish its relationship with acid-base status. METHODS: 26 patients (10 months - 17 years) with CKD who attended the outpatient clinic of the Department of Nephrology at the Children's Hospital JM de los Rios from June 2014 through January 2016 were included. Dietary assessment was performed with a 24-hour recall and frequency questionnaire. PRAL was calculated according to Manz and Remer. Laboratory parameters analyzed were: venous gases, serum creatinine, sodium, potassium and chloride. RESULTS: PRAL was 16.11 ± 10.6 mEq/day. None of the patients had a negative PRAL. The results for serum HCO3 and pH were 20.46 ± 4.5 mEq/l and 7.3 ± 0.8 mEq/l respectively. No significant correlation was found between PRAL and acid-base parameters, although the correlation was significant with protein intake (p = 0.001), and also with meat (p = 0.010), fat (p = 0.006) and cereal (p = 0.022) intake. PRAL was negatively correlated with vegetable intake (p=0.032). 21 patients received sodium bicarbonate as alkalizing treatment without achieving metabolic acidosis control in most cases. CONCLUSIONS: PRAL was elevated in most patients. No significant correlation between PRAL and acid base parameters was found. It is important to achieve adequate metabolic acidosis control in these patients by means of sodium bicarbonate and increased intake of fruits and vegetables.

Palabras clave : Potential Renal Acid Load; PRAL; Chronic Kidney Disease; Metabolic acidosis; diet; children.

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