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26 Aug 2019

Effects of urinary sodium-to-potassium ratio change on blood pressure

Pereira T et al recently published results from the ELSA-Brazil longitudinal health study, investigating the effect of urinary sodium-to-potassium (Na/K) ratio on blood pressure (BP). 14,014 participants completed baseline and follow-up measurements, four years later. Overnight (12-hour) urine samples were collected and validated equations were used to translate these measures into 24-hour sodium and potassium intake. Na/K decreased between baseline and follow-up due to increases in potassium intake and no change in sodium intake. Authors investigated the effect of Na/K on BP by quintiles, finding increases in systolic BP in women from the third Na/K quintile and higher, and for men from the fourth quintile. Conversely, increases in diastolic BP were witnessed from the third Na/K quintile for both sexes.

bmckenzie

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