Urinary sodium excretion predicts blood pressure response to spironolactone in patients with resistant hypertension independent of aldosterone status.
Ghazi L, Dudenbostel T, Lin CP, Oparil S, Calhoun DA. Urinary sodium excretion predicts blood pressure response to spironolactone in patients with resistant hypertension independent of aldosterone status. J Hypertens. 2016 May; 34(5):1005-10.