BACKGROUND & AIMS: Beta-blocker therapy is effective at reducing risks of variceal bleeding. However, beta-blockers may detrimentally exacerbate the underlying haemodynamic changes in cirrhosis. A systematic review and meta-analysis was performed to evaluate impact of beta-blockers on all-cause mortality among cirrhosis patients with ascites. METHODS: A literature search identified studies that evaluated beta-blocker vs no beta-blocker therapy in cirrhosis patients with ascites. The primary outcome was all-cause mortality with subcohort analysis of patients with refractory or severe ascites. Quality of observational studies was assessed with Newcastle-Ottawa Scale and overall certainty of the evidence was assessed using Grading of Recommendations Assessment, Development and Evaluation (GRADE) system. RESULTS: Eight observational studies, representing 3627 cirrhosis patients with ascites (1630 treated with beta-blockers and 1997 not treated), were included. Pooled all-cause mortality was 38.6% in beta-blocker group vs 42.2% in no beta-blocker group (RR 0.93, 95% CI 0.77-1.13, χ2 = 54.03, I2 = 87%). Subcohort analysis of cirrhosis patients with refractory or severe ascites demonstrated 33.3% mortality in beta-blocker group vs 32.1% in no beta-blocker group (RR 0.99, 95% CI 0.70-1.40, χ2 = 32.99, and I2 = 82%). Three studies were good quality and five studies were fair quality. GRADE rating was 'very low' certainty of evidence, given concern for bias and inconsistency stemming from significant heterogeneity. CONCLUSION: No significant increase in all-cause mortality was observed in cirrhosis patients with ascites treated with beta-blockers. However, given the low certainty of the evidence, high quality prospective studies are needed.
BACKGROUND & AIMS: Beta-blocker therapy is effective at reducing risks of variceal bleeding. However, beta-blockers may detrimentally exacerbate the underlying haemodynamic changes in cirrhosis. A systematic review and meta-analysis was performed to evaluate impact of beta-blockers on all-cause mortality among cirrhosispatients with ascites. METHODS: A literature search identified studies that evaluated beta-blocker vs no beta-blocker therapy in cirrhosispatients with ascites. The primary outcome was all-cause mortality with subcohort analysis of patients with refractory or severe ascites. Quality of observational studies was assessed with Newcastle-Ottawa Scale and overall certainty of the evidence was assessed using Grading of Recommendations Assessment, Development and Evaluation (GRADE) system. RESULTS: Eight observational studies, representing 3627 cirrhosispatients with ascites (1630 treated with beta-blockers and 1997 not treated), were included. Pooled all-cause mortality was 38.6% in beta-blocker group vs 42.2% in no beta-blocker group (RR 0.93, 95% CI 0.77-1.13, χ2 = 54.03, I2 = 87%). Subcohort analysis of cirrhosispatients with refractory or severe ascites demonstrated 33.3% mortality in beta-blocker group vs 32.1% in no beta-blocker group (RR 0.99, 95% CI 0.70-1.40, χ2 = 32.99, and I2 = 82%). Three studies were good quality and five studies were fair quality. GRADE rating was 'very low' certainty of evidence, given concern for bias and inconsistency stemming from significant heterogeneity. CONCLUSION: No significant increase in all-cause mortality was observed in cirrhosispatients with ascites treated with beta-blockers. However, given the low certainty of the evidence, high quality prospective studies are needed.
Authors: Guruprasad P Aithal; Naaventhan Palaniyappan; Louise China; Suvi Härmälä; Lucia Macken; Jennifer M Ryan; Emilie A Wilkes; Kevin Moore; Joanna A Leithead; Peter C Hayes; Alastair J O'Brien; Sumita Verma Journal: Gut Date: 2020-10-16 Impact factor: 23.059