Reducción de la masa ventricular izquierda en hipertensos esenciales tratados crónicamente con monoterapia. / [Reduction of the left ventricular mass in essential hypertension patients chronically treated with monotherapy]

ABSTRACT

Changes in left ventricular mass (LVM) were measured by echocardiography in 104 mild and moderate essential hypertensives treated with only one drug for at least 12 months. They were classified into 4 groups. G1 40 patients (p) treated with atenolol (73.6 +/- 31.8 mg daily), G2 32 p treated with enalapril maleate (17.7 +/- 8.7 mg daily), G3 22 p treated with nifedipine (44.0 +/- 10.8 mg daily), G4 control group, 10 mild hypertensives without medication. At the end of the treatment blood pressure (BP) fell significantly in the first 3 groups (G1 155 +/- 19/.98 +/- 11 vs. 136 +/- 11/86 +/- 15 mm Hg, G2 163 +/- 19/104 +/- 10 vs. 139 +/- 12/90 +/- 8 mm Hg, G3 166 +/- 17/103 +/- 7 vs. 142 +/- 7/85 +/- 7 mm Hg, p less than 0.001), but remained unchanged in G4. Heart rate was reduced significantly only in G1. Body weight did not change (71 +/- 7 vs. 67 +/- 7, p greater than .05). Patients were subclassified according to wether they had normal (N, LVM less than 120 g/m2 in females, LVm less than 135 g/m2 in males) or increased (H) LVM. There was a significant reduction in LVM in all H subgroups (G1 163 +/- 37 vs. 131 +/- 27 g/m2, G2 155 +/- 19 vs. 126 +/- 21 g/m2, G3 158 +/- 2 vs. 138 +/- 38 g/m2, p less than .005). The LVM/left ventricular end-diastolic volume ratio (M/V) fell in all H subgroups.(ABSTRACT TRUNCATED AT 250 WORDS)