Summary
MARUM, E.C.H. Evaluation of the Association of Structural and Functional
Cardiac Parameters with Anthropometric and Metabolic Variables, and
with the Arterial Stiffness in Severe Hypertensive Patients. [these]. São
Paulo: Faculdade de Medicina, Universidade de São Paulo; 2008. 75p.
Hypertension is frequently associated with obesity, metabolic and cardiovascular
abnormalities. Although there are studies correlating these alterations with cardiac
structure and function alterations, there is no data regarding this issue in severe
hypertensive patients. The aim of this study was to evaluate in severe hypertensive
patients structural and functional cardiac variables, and whether there is an
association between them and anthropometric, metabolic variables, and pulse wave
velocity. Forty-one patients with severe hypertension were evaluated after 30 days
taking the same anti-hypertensive medication. Cardiac evaluation was performed
with the echocardiogram. Aortic distensibility was obtained by pulse wave velocity.
Blood sample was drowning after 12-hours fasting for biochemistry variables. Waist
circumference was measured with a flexible metric strip according to international
and national recommendations. Correlation between echocardiographic parameters,
biochemistry variables, waist circumference, and the pulse wave velocity were done.
Uric acid and triglycerides showed better correlation with cardiac structural and
functional parameters. Uric acid showed a positive correlation with left ventricle
mass, left ventricle mass index, left ventricle diastolic diameter, left ventricle septal
and posterior wall thickness, aortic root and a negative correlation with ejection
fraction. Triglycerides showed a positive correlation between diastolic septal and
posterior wall thickness, systolic and diastolic left ventricle diameters, aortic root and
left atrium diameter, left ventricle mass and mass index, and also a negative
correlation between peak velocity of early diastolic filling of mitral inflow and your
ratio with the peak velocity of late diastolic filling. The correlation persisted after
correction for age and body mass index. The waist circumference and the pulse
wave velocity also showed correlation with cardiac structural and functional data.
Glucose, HDL-cholesterol and LDL-cholesterol values also were associated with
myocardial structural and functional different parameters. In a linear regression
multiple model, considering echocardiogram parameters as dependent variable and
blood pressure, biochemistry data, age, and body mass index independent variables
was done. Triglycerides, uric acid, and body mass index showed higher number of