Segmental Renal Vein Renin Assay and Segmental Nephrectomy for Correction of Renal Hypertension

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Abstract
Selective segmental renal vein catheterization was used to obtain venous blood samples for renin assay. With this technique a localized source of hypersecretion of renin was identified in 2 patients. Using samples from the main renal veins we found no significant difference in renin activity and, therefore, the etiology of the hypertension in these 2 patients would have been missed. Segmental nephrectomy resulted in a cure of the hypertension in both patients who were followed for a minimum of 14 months.