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1.
Braz. j. med. biol. res ; 35(7): 799-804, July 2002. tab, graf
Article in English | LILACS | ID: lil-316733

ABSTRACT

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 percent) patients presented UAE > or = 15 æg/min, and for the whole group, the geometric mean value for UAE was 10.2 x/÷ 3.86 æg/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 æg/min for the presence of geometric cardiac abnormalities were 75 and 91.6 percent. These data indicate that microalbuminuria in essential hypertension represents an early marker of cardiac structural damage


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Albuminuria , Hypertension , Myocardium , Albuminuria , Biomarkers , Blood Pressure , Blood Pressure Monitoring, Ambulatory , Echocardiography , Hypertension , Hypertrophy, Left Ventricular , Predictive Value of Tests , Risk Factors , Ventricular Dysfunction, Left
2.
Rev. argent. cardiol ; 64(supl. 4): 74-80, 1996. tab, graf
Article in Spanish | LILACS | ID: lil-194143

ABSTRACT

Fueron estudiados 24 pacientes hipertensos con obesidad androide, sin intolerancia a la glucosa, con índice de masa corporal entre 25 y 35 kg/m2, con presión arterial diastólica superior a 95 mmHg e inferior a 115 mmHg, después de ocho semanas sin tratamiento farmacológico. Los pacientes fueron divididos en dos grupos de 12 pacientes y después de 4 semanas de administración de placebo recibieron amlodipina (5-10 mg/día) o propranolol (160-320 mg/día). Se realizó una prueba de sensibilidad a la insulina al término del período placebo y después de 20 semanas de tratamiento. Los niveles de presión se redujeron de manera semejante en los dos grupos. Antes del tratamiento con droga activa los dos grupos no diferían en cuanto al índice de sensibilidad a la insulina. El tratamiento con propranolol provocó una reducción significativa del índice de sensibilidad a la insulina (0,34 ñ 0,16 versus 0,23 ñ 0,09; p<0,05), mientras tal índice se mantuvo inalterado en el grupo tratado con amlodipina (0,33 ñ 0,29 versus 0,30 ñ 0,18; no significativo). El tratamiento de los pacientes hipertensos esenciales con propranolol resultó en un empeoramiento de la sensibilidad a la insulina, mientras la amlodipina no tuvo tal influencia deletérea


Subject(s)
Humans , Adult , Middle Aged , Amlodipine/administration & dosage , Amlodipine/pharmacology , Amlodipine/therapeutic use , Antihypertensive Agents/administration & dosage , Antihypertensive Agents/pharmacology , Antihypertensive Agents/therapeutic use , Hypertension/drug therapy , Hypertension/therapy , Insulin , Obesity , Propranolol/administration & dosage , Propranolol/pharmacology , Propranolol/therapeutic use , Body Weight , Brazil , Risk Factors
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