Artículos de revistas
Factors Associated With Increased Radial Augmentation Index In Hypertensive Individuals
Registro en:
Arquivos Brasileiros De Cardiologia. , v. 97, n. 3, p. 241 - 248, 2011.
0066782X
10.1590/S0066-782X2011005000087
2-s2.0-82455163686
Autor
Vaz-de-Melo R.O.
Pimenta A.G.
Giollo Junior L.T.
Martinelli D.D.
Sacomani C.N.C.
Yugar-Toledo J.C.
Cipullo J.P.
Gomes M.A.M.
Moreno Junior H.
Martin J.F.V.
Institución
Resumen
Background: Arterial stiffness is a variable predictor of morbidity and mortality and a possible marker of vascular injury. Its non-invasive assessment by radial tonometry and analysis of the augmentation index (r-AI) allows identifying patients exposed to higher cardiovascular risk. Objective: To analyze the influence of r-AI on clinical-biochemical variables and its influence on the prevalence of target-organ damage in hypertensive patients. Methods: 140 consecutive hypertensive patients, followed-up in an outpatient clinic, were analyzed in a cross-sectional study. Blood pressure (BP) levels and r-AI were obtained by applanation tonometry of the radial artery (HEM-9000AI, Onrom). The patients were allocated into r-AI tertiles (r-AI ≤ 85%; 85 < r-AI ≤ 97%; r-AI > 97%). Results: The sample was predominantly composed of women (56.4%), mean age of 61.7 ± 11.7 years and body mass index 29.6 ± 6.1 Kg/m 2. The highest tertile showed higher proportion of women (p = 0.001), higher systolic BP (p = 0.001) and pulse pressure (p = 0.014), and lower weight (p = 0.044), height (p < 0.001) and heart rate (p < 0.001). Multivariate analysis demonstrated that weight (β =-0.001, p = 0.017), heart rate (β =-0.001, p = 0.007) and central pressure (β= 0.015, p < 0.001) correlated independently with r-AI. In logistic regression analyses, the 3rd r-AI tertile was associated to lower levels of diabetes (DM) (OR = 0.41; 95% CI 0.17-0.97; p = 0.042). 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