Relationships between cardiovascular remodelling and the pulse pressure in never treated hypertension

J P Baguet, J M Mallion, A Moreau-Gaudry, M Noirclerc, M Péoc'h, J P Siché
Journal of Human Hypertension 2000, 14 (1): 23-30
The role of pulse pressure (PP) in cardiovascular remodelling was studied in 61 never treated hypertensive subjects who were selected on the criteria of ambulatory blood pressure (BP) monitoring (mean BP over 24 h: 147 +/- 14/96 +/- 10 mm Hg). Echocardiography and carotid ultrasonography were performed and the vascular images analysed using a specific automatic measuring program. Thirty percent of subjects had left ventricular hypertrophy (LVH). Left ventricular mass index (LVMI) was related to the clinic (r = 0.35) and ambulatory (r = 0.41 over 24 h, r = 0.38 daytime and r = 0.42 night-time) PP and to the systolic BP. PP was higher when there was LVH. Vascular thickening was found in 6.6% of subjects (carotid intima-media thickness (IMT) >/=1.0 mm). Among the BP parameters, IMT and cross-sectional area (CSA) were related only to the clinic PP (r = 0.27, r = 0.29 respectively) and to the ambulatory PP (over 24 h: r= 0.29, r = 0.28; daytime: r = 0.22, r = 0.23; night-time: r = 0.32, r = 0.30). In men, the relationship between CSA and PP (clinic and over 24 h) was independent of age. A total of 16.7% of subjects with LVH had intima-media thickening in contrast to 2.3% in the group without LVH. LVMI was related to the CSA (r = 0.37) and to the IMT (r = 0.31). However, after multivariate analysis taking into account the PP, relationships between IMT or CSA and LVMI disappeared. Our data showed that the PP was the most important BP parameter in the development of cardiac and arterial remodelling in hypertension. Journal of Human Hypertension (2000) 14, 23-30.

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