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Left ventricular hypertrophy (LVH) is very common in uremic patients. It was shown previously that hemodialysis patients are chronically exposed to the extremes of plasma renin activity due to differences in the original renal disease. Because nonhemodynamic factors seem to play a fundamental role in the development of LVH, the present study was undertaken to investigate the relationship between the predialysis renin level and the echocardiographically determined cardiac structure in stable hemodialysis patients, matched for other parameters known to participate in the development of LVH, such as age; gender; body mass index; interdialytic weight gain; heart rate; systolic, diastolic, and mean arterial BP; hematologic and biochemical profile; vascular access; adequacy of dialysis; nutritional status; and period of follow-up. Thirty-three such patients were stratified in three groups according to predialysis renin levels: group A (n = 11), with renin levels   or = 4 ng.ml-1.h-1. LVH with disproportionate septal thickening was directly related to the degree of renin-angiotensin system activation, and values for interventricular septum thickness, posterior wall thickness, interventricular septum thickness/posterior wall thickness ratio, left ventricular mass, and left ventricular mass index were all significantly correlated with predialysis renin levels. Because angiotensin II promotes growth in both fibroblasts and cardiac myocytes, these relationships suggest that elevated renin levels may be causally associated with the development of LVH in chronic hemodialysis patients.

Relationship between left ventricular hypertrophy and plasma renin activity in chronic hemodialysis patients.