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Hypertension, Vol 5, 837-843, Copyright © 1983 by American Heart Association

ARTICLES

Echocardiographic left ventricular hypertrophy as related to arterial pressure and plasma norepinephrine concentration in arterial hypertension. Reversal by atenolol treatment

L Corea, M Bentivoglio and P Verdecchia

We tried to assess relationships between echocardiographic left ventricular hypertrophy (LVH), arterial pressure levels, and plasma norepinephrine concentration (NE) in 20 previously untreated stable hypertensive patients with LVH, and in 11 healthy normotensive control subjects. Interventricular septal (IVS) thickness, posterior wall (PW) thickness, and left ventricular mass index (LVMI) were related to arterial pressure levels and to NE by univariate and multivariate regression analyses. In addition, after 18 months of monotherapy with atenolol (carried out in nine of 20 patients), the relationship between echocardiographic changes and degree of pressure reduction was tested. Before treatment, PW thickness weakly correlated with systolic (r = 0.55; p less than 0.01) and mean (r = 0.50; p less than 0.05) arterial pressure. IVS thickness weakly correlated with NE (r = 0.53; p less than 0.05). On this relatively small sample, multivariate regression analysis showed an association of both IVS thickness (R = 0.57; p less than 0.05) and PW thickness (R = 0.58; p less than 0.05) with mean arterial pressure (MAP) and NE. After atenolol, there was a reduction in IVS thickness (1.15 to 1.02 cm; p less than 0.01), PW thickness (1.08 to 0.99 cm; p less than 0.01), and LVMI (136.3 to 113.8 g/m2; p less than 0.01), besides a significant reduction in blood pressure and heart rate. The degree of pressure reduction induced by treatment did not correlate the change in IVS or PW thickness. In contrast, the change in diastolic and mean arterial pressure positively correlated the change in LVMI (r = 0.72 and r = 0.75, respectively; both p less than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)

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