A Prospective Study of Various Anti Hypertensive Drugs on Reversal of Left Ventricular Hypertrophy in Hypertensive Bangladeshi Population
Annals of International medical and Dental Research
Regression of ventricular hypertrophy is the restoration of normal ventricular structure and physiology after the hypertrophy has developed. It has been clearly demonstrated that once left ventricular hypertrophy (LVH) is diagnosed, it represents a strong blood pressure independent risk factor for cardiovascular morbidity and mortality. Aims and Objectives: The aim of this study is to compare the effectiveness of different anti-hypertensive agents in reducing LVH in Bangladeshi population.
... hi population. Methods: A prospective observational study was carried out to detect the regression of left ventricular hypertrophy in hypertensive Bangladeshi population using high resolution M-mode echocardiographic study in 110 patients with clinically diagnosed hypertension were included in this study but later 15 patients failed to attend clinic for subsequent follow up. Hence, total number of patient was 95; The mean age (±SD) of these patients were 42 ± 5 and male-female ratio was 8.5:1.5. Out of these 95 patients, 20 were included in Beta-blocker(BB) group, 14 in Angiotensin converting enzyme inhibitor(ACEi) group, 20 in Beta-blocker(BB) + Diuretic(DD), 14 were recruited in Angiotensin enzyme inhibitor(ACEi) + Diuretics(DD) and 13 in Beta-blocker and ACEi group and 14 in BB + ACEI + Diuretic group. We followed these patients after 8 weeks, 6 months, 1 year and 2 years in our clinic. A baseline M-mode echocardiography was done to document LVH. During this follow up, we have measured IVSd, PWd, LVIDd and LVIDs and statistically analyzed SD and P-value for each group by using SPSS software. The duration of study was from 01.07.2005 to 30.06.2008. Results: Comparison of Beta blocker alone and ACEi alone group for LVH regression showed a P value of 0.59. Although this figure did not show a statistically significant value if we increase number of patients in both group we would expect a statistically significant P value in favour of ACEi. BB plus diuretics was compared with ACEi plus Diuretics which showed P value of 0.85. We also compared BB plus ACEi group with BB plus ACEi plus DD for LVH regression which showed a P value of 0.79. Conclusion: Among three groups of anti-hypertensive drugs, angiotensin converting enzyme inhibitor(ACEi) alone has been found to be most effective as compared to Beta blockers when used alone than in combination groups with (Beta blocker plus ACEi plus Diuretics or Beta blocker plus ACEi). Although, these figure was not found statistically significant a clear benefit has been shown in all groups in terms of LVH regression and essentially if the power or size if this is increased a statistically significant value of LVH regression value may be observed in all these groups.