Abstract
Microscopic analysis of over 2,000 renal biopsies taken at surgical sympathectomy operations has been correlated with blood pressures in essential hypertension. Statistically significant relationships exist between the average diastolic pressure and the degree of afferent renal arteriolar thickening and narrowing. Postoperative prognosis was favorable with all but the most severe and diffuse arteriolar sclerosis, and vascular fibrinoid necrosis did not affect survival. Juxtaglomerular cell hyperplasia and inferred renin hypersecretion were significantly involved in the kidney biopsies of essential hypertension. Diabetic juxtaglomerular cell atrophy and sclerosis reduced this component of hypertension. After age 80, kidneys at autopsy showed no evident relation between arteriolar lesions and hypertension.
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