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Identifying Aldosterone-Producing Adenoma

T. Liang Kho, MD; Jos M. A. van Engelshoven, MD; Blagoja Janevski, MD; Paul Lijnen, MD
Arch Intern Med. 1982;142(10):1971-1972. doi:10.1001/archinte.1982.00340230221043.
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To the Editor.  —I read with interest the article by Hiramatsu et al entitled "A Screening Test to Identify Aldosterone-Producing Adenoma by Measuring Plasma Renin Activity: Results in Hypertensive Patients" in the November Archives (1981;141:1589-1593).These authors showed that in the upright position, the aldosterone-plasma renin activity (PRA) ratio was always above 400 in all their hypertensive patients with aldosterone-producing adenoma (APA) and was below 200 in patients with essential hypertension. A false-positive value was also found in some of their patients with essential hypertension. The administration of diuretics and salt restriction did not increase the aldosterone-PRA ratio in their patients with essential hypertension.Using amiloride hydrochloride as a potassium-sparing diuretic, which also has an antihypertensive effect,1-3 20 to 30 mg/day for longer than eight weeks, we have examined four hypertensive patients with APA and seven patients with essential hypertension. Blood samples were obtained from the patients at 9:30


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