Relationship between microalbuminuria and cardiac structural changes in mild hypertensive patients

Relationship between microalbuminuria and cardiac structural changes in mild hypertensive patients

Autor Plavnik, F.l. Autor UNIFESP Google Scholar
Silva, M.a.m.r.t. Autor UNIFESP Google Scholar
Kohlmann, Narcia Elisa Bellucci Autor UNIFESP Google Scholar
Kohlmann Junior, Osvaldo Autor UNIFESP Google Scholar
Ribeiro, A.b. Autor UNIFESP Google Scholar
Zanella, Maria Teresa Autor UNIFESP Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Resumo The aim of this study was to determine the relationship between urinary albumin excretion (UAE), cardiac structural changes upon echocardiography and 24-h ambulatory blood pressure (ABPM) levels. Twenty mild hypertensive patients (mean age 56.8 ± 9.6 years) were evaluated. After 2 weeks of a washout period of all antihypertensive drugs, all patients underwent an echocardiographic evaluation, a 24-h ABPM and an overnight urine collection. Systolic and diastolic blood pressure during 24-h ABPM was 145 ± 14/91 ± 10 mmHg (daytime) and 130 ± 14/76 ± 8 mmHg (nighttime), respectively. Seven (35%) patients presented UAE> or = 15 µg/min, and for the whole group, the geometric mean value for UAE was 10.2 x/÷ 3.86 µg/min. Cardiac measurements showed mean values of interventricular septum thickness (IVS) of 11 ± 2.3 mm, left ventricular posterior wall thickness (PWT) of 10 ± 2.0 mm, left ventricular mass (LVM) of 165 ± 52 g, and left ventricular mass index (LVMI) of 99 ± 31 g/m². A forward stepwise regression model indicated that blood pressure levels did not influence UAE. Significant correlations were observed between UAE and cardiac structural parameters such as IVS (r = 0.71, P<0.001), PWT (r = 0.64, P<0.005), LVM (r = 0.65, P<0.005) and LVMI (r = 0.57, P<0.01). Compared with normoalbuminuric patients, those who had microalbuminuria presented higher values of all cardiac parameters measured. The predictive positive and negative values of UAE> or = 15 µg/min for the presence of geometric cardiac abnormalities were 75 and 91.6%. These data indicate that microalbuminuria in essential hypertension represents an early marker of cardiac structural damage.
Palavra-chave Hypertension
Microalbuminuria
Left ventricular hypertrophy
Blood pressure monitoring
Idioma Inglês
Data de publicação 2002-07-01
Publicado em Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 35, n. 7, p. 799-804, 2002.
ISSN 0100-879X (Sherpa/Romeo, fator de impacto)
Publicador Associação Brasileira de Divulgação Científica
Extensão 799-804
Fonte http://dx.doi.org/10.1590/S0100-879X2002000700006
Direito de acesso Acesso aberto Open Access
Tipo Artigo
Web of Science WOS:000177456600006
SciELO S0100-879X2002000700006 (estatísticas na SciELO)
Endereço permanente http://repositorio.unifesp.br/handle/11600/1476

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