Abstract P111: Comparative Efficacy Of Bisoprolol Compared To Other Selective Beta-1 Blockers In Patients With Hypertension - A Systematic Review And Meta-analysis Of Observational Studies

Abstract

Introduction: Selective beta-1 blockers (s-BBs) are used in the management of hypertension (HT) in specific subsets. Studies comparing the potency of blood pressure (BP) lowering with different s-BBs are sparse. The objective of this meta-analysis was to evaluate the efficacy of bisoprolol compared to other s-BBs (Atenolol, Betaxolol, Esmolol, Acebutolol, Metoprolol, Nebivolol) in HT patients by examining their effect on BP, heart rate (HR) and metabolic derangements, by examining the evidences reported in observational studies. Methods: Electronic databases like PubMed, EMBASE, Cochrane Library, Clinicaltrials.gov, Surveillance, Epidemiology and End Results Program and 12 PV databases were systematically searched from inception to October 2019. Observational studies that compared bisoprolol with other s-BBs in patients with HT were evaluated in accordance with the PRISMA guidelines. Pooled data were calculated using random-effects model for meta-analysis in terms of mean difference (MD) and 95% confidence interval (95% CI) for each outcome. Outcomes of interest were BP, HR and lipid profile. Results: Four observational studies which compared bisoprolol with other s-BBs (nebivolol and atenolol) were included in this meta-analysis. Significant reduction was observed in office diastolic BP [MD: -1.70; 95% CI: -2.68,-0.72; P <0.01] among arterial HT patients treated with bisoprolol for 26 weeks (w) compared to those treated with other s-BBs. HT patients treated with bisoprolol for 26 w showed significant reduction in HR [MD: -2.20; 95% CI: -3.57,-0.65; P <0.01] and office HR [MD: -2.55; 95% CI: -3.57,-1.53; P <0.01] than other s-BBs. HDL cholesterol levels increased significantly in essential HT patients treated with bisoprolol at 26 w [MD: 7.17; 95% CI: 1.90,12.45; P <0.01], 78 w [MD: 11.70; 95% CI: 4.49,18.91; P <0.01] and 104 w [MD: 10.20, 95% CI: 4.49,18.91; P <0.01] compared to other s-BBs. Conclusion: Our results suggests that bisoprolol is superior to other s-BBs in reducing BP and HR. Bisoprolol also had a favourable effect on lipid profile shown by increase in HDL cholesterol. This meta-analysis emphasizes the efficacy of bisoprolol over other s-BBs, which aids clinical decision making in treatment of patients with HT.