Comparison of effects of nebivolol, carvedilol and irbesartan on left ventricular hypertrophy associated with hypertension.

OBJECTIVES The aim of this study was to investigate if the new generation beta-blockers are as effective as irbesartan, which is an angiotensin receptor blocker (ARB), on left ventricular hypertrophy (LVH). PATIENTS AND METHODS The study included 85 patients (average age: 56.6±9.6 year) with stage 1 and 2 hypertension, who previously didn't receive an antihypertensive treatment, but diagnosed with LVH echocardiographically. The patients were divided into three different treatment groups: irbesartan (n=28), nebivolol (n=25) and carvedilol (n=32). The patients were reassessed clinically and echocardiographically at 3, 6 and 12 months after the treatments. RESULTS There was no statistically significant difference in baseline left ventricular mass index (LVMI) and other parameters among the three treatment groups (p > 0.05). Although there was no significant decrease in LVMI in irbesartan and carvedilol groups at 3 months after the treatment (p > 0.05), the values measured at 6 and 12 months (p < 0.0001) were significant. The decrease in LVMI in the nebivolol group was significant at 3, 6 and 12 months (p < 0.0001). There was a significant difference in measurements at 12 months (p < 0.05). CONCLUSIONS Both of the new generation beta-blockers were more effective than irbesartan in the regression of LVH. A significant regression in LVH was observed 3 months after nebivolol treatment and 6 months after irbesartan and carvedilol treatments.