Saline Suppression of Plasma Aldosterone in Hypertension

38 subjects, including 9 normal subjects, 18 patients with essential hypertension, 6 patients with aldosteronism and adrenal adenomas or glucocorticoid suppressible hyperplasia, 1 hypertensive hypokalemic patient with low plasma renin activity, and 4 patients with renovascular stenosis and hypertension.

Intravenous infusion of 2 liters of isotonic saline during four hours of recumbency.

Plasma aldosterone concentration after infusion.surrogate