Vol 1 No 1
Research Article

Sodium and Potassium Intake, the First Step to Control Arterial Hypertension

Maria Guedes-Marques
Nephrology department of Centro Hospitalar de Coimbra
Emanuel Ferreira
Nephrology department of Centro Hospitalar de Coimbra
Francisco Ferrer
Nephrology department of Centro Hospitalar de Coimbra
Dilva Silva
Internal Medicine department of Centro Hospitalar de Coimbra
Jorge Fortuna
Internal Medicine department of Centro Hospitalar de Coimbra
Pedro Maia
Nephrology department of Centro Hospitalar de Coimbra
Ana Figueiredo
Internal Medicine department of Centro Hospitalar de Coimbra
Armando Carreira
Nephrology department of Centro Hospitalar de Coimbra
Published June 29, 2016

Abstract

In Portugal, Hypertension affects 43% of adults. Salt intake reduction and potassium increase are recommended for prevention and treatment of hypertension. This study was designed to determine how dietary sodium and potassium affects blood pressure (BP). Cross-sectional study of 41 patients was made in Centro Hospitalar de Coimbra. Patients BP, as well as their 24-hour urinary excretion of sodium (UNa) and potassium (UK); UNa/UK ratio was calculated. There were highly significant differences for both diastolic BP (DBP) and sistolic BP (SBP) means according to 24h-UNa and UNa/UK values (p 0.001). There was a highly correlation between BP and 24h-UNa, as well as, UNa/UK; stronger with this latest factor. Among BP values, SBP was strongly influenced by 24h-UNa and UNa/UK than DBP (Pearson 0.608 > 0.578 and 0.675 > 0.633, respectively). So, increased potassium intake should be considered as a recommendation for prevention and treatment of hypertension, especially in those who are unable to reduce their intake of sodium.