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  • Title: Renin-aldosterone profiling in hypertension.
    Author: Mitchell JR, Taylor AA, Pool JL, Lake CR, Rollins DE, Bartter FC.
    Journal: Ann Intern Med; 1977 Nov; 87(5):596-312. PubMed ID: 335942.
    Abstract:
    Renin-aldosterone profiling was used to classify patients with hypertension: 243 patients with essential hypertension were classified by renin-urinary sodium indexing; 107 were reclassified by response to administration of furosemide and intravenous saline; 45 were further classified by response to a low-sodium diet. Arbitrary "normal ranges" were determined in 89, 32, and 38 volunteers, respectively. Patients with low-renin apparently do not have "high-volume" hypertension. Rather, they show a primary renal abnormality in renin secretion and become relatively deficient in angiotensin II and aldosterone when they are subjected to diuresis. They can maintain aldosterone secretion under normal conditions because their adrenal aldosterone receptor is supersensitive to angiotensin II. No evidence of abnormal sympathetic neural activity was found among the renin subgroups. Renin-aldosterone profiling in current clinical practice seems useful mainly in the detection of patients with curable forms of secondary hypertension. Aldosterone/renin ratios may be particularly helpful in diagnosis when obtained after a patient has undergone expansion or contraction of his extracellular fluid volume.
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