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Left Ventricular Remodeling and Renal Function in Never-Treated Essential Hypertension

Department of Internal Medicine, CHU Montpellier, France.

Correspondence to Dr. Albert Mimran, Department of Internal Medicine, Hôpital Lapeyronie, 34295 Montpellier Cedex 5, France. Phone: 33-4-67-33-84-43; Fax: 33-4-67-33-84-53;

ABSTRACT. In the general population, renal function linearly declines with age; hypertension may accelerate this decline. Because concentric left ventricular (LV) hypertrophy is a strong marker of the severity of hypertension, the influence of LV geometry on the age-associated decline in renal function was assessed in 195 normotensive subjects and 645 patients with never-treated essential hypertension with an average duration of 30 mo. According to LV mass and relative wall thickness, hypertensive patients were divided into normal LV (NL, 48%), concentric remodeling (CR, 19%), and concentric (CH, 22%) and eccentric (EH, 11%) hypertrophy. GFR and effective renal plasma flow (ERPF) were estimated by isotopic clearance technique. GFR and ERPF were inversely correlated with age in normotensive and hypertensive subjects, and no marked influence of the BP level or the presence of LV hypertrophy was detected. However, the slope of the regression line of GFR versus age was accentuated (P < 0.01) in patients with CH or CR (slope values of -0.95 ± 0.11, -0.86 ± 0.14 ml/min per yr, respectively) when compared with patients with EH or NL (slope values of -0.58 ± 0.16 and -0.58 ± 0.08 ml/min per yr, respectively). No such results were obtained when creatinine clearance was considered. Urinary albumin excretion was higher in patients with concentric or eccentric LV hypertrophy than in patients with concentric LV remodeling or normal LV. These results demonstrate that in never-treated essential hypertension, the age-associated decline in GFR is markedly influenced by the concentric pattern of LV response to hypertension rather than the level of BP and/or the presence of LV hypertrophy. E-mail: a-mimran@chu-montpellier.fr

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Copyright © 2008 by the American Society of Nephrology. Online ISSN: 1533-3450 Print ISSN: 1046-6673