Abstract
Objective: To estimate the prevalence of excessive salt consumption, using the 24 hours sodium urinary excretion in hypertensive treated patients. Design and method: The study was observational and descriptive, including consecutive hypertensive patients treated in a hypertension consultation unit at the university hopsital of Tizi-ouzou (Algeria), between February and June 2014. A collection of 24 hours urine was made on the eve of the consultation. A blood pressure self-measurement on 3 days was practiced in all patients. Results: 912 patients were included, with 55% of men and 43% of diabetics. The mean age of the population was 66 ± 13 years. The mean systolic and diastolic blood pressure was 141 ± 9.1 mm Hg and 80 ± 8.2 mm Hg, respectively. The mean sodium (Na) excretion was 9.3 g/24 hours (IQR: 6.2 - 12.1). Expressed as salt (NaCl) consumption, 25% of hypertensive treated patients in our population had an excessive salt consumption (> 30 g per a day), 25% a recommended consumption (<15 g per a day) and 50% an inadequate consumption (15 - 30 g per a day). Excessive salt consumers had a blood pressure that was significantly higher, on average, than those with a recommended or an inadequate salt consumption (p < 0.001). Conclusions: 3/4 of the hypertensive treated patients in our population had an inadequate or excessive salt consumption. The quantification of the 24 hours sodium urinary excretion conducted more frequently could help to improve the blood pressure control and to reduce the rate of resistant hypertension.
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