Systematic review and meta-analysis of erythropoiesis-stimulating agents in chronic heart failure and anaemia
This systematic review and meta-analysis assessed the efficacy and safety of any erythropoiesis-stimulating agent at any dose compared with placebo or no treatment in adults with chronic heart failure and anaemia. The analysis included 3128 patients followed for 5604 person-years. The primary outcome was first CHF hospitalization, while secondary outcomes included total CHF hospitalization, all-cause mortality, incident adverse events, haemoglobin level, exercise tolerance, and NYHA class.
Regarding primary outcomes, there was no significant difference in first CHF hospitalization, with a Peto odds ratio of 0.93 (95% CI 0.78-1.10, P = .37). Conversely, ESAs significantly reduced total CHF hospitalization, with an incidence rate ratio of 0.81 (95% CI 0.73 to 0.90, P < .001). This corresponds to 622 events per 2698 person-years in the ESA group versus 761 per 2914 person-years in the control group.
Secondary outcomes showed that ESAs increased haemoglobin level by a mean difference of 1.6 g/dL (95% CI 1.6-1.7, P < .001) and improved exercise tolerance by a mean difference of 69 metres (95% CI 17-122, P = .009). There were no significant differences in all-cause mortality (odds ratio 1.01, 95% CI 0.86-1.18, P = .88) or incident adverse events. The authors note moderate quality of evidence for most outcomes and variable risk of bias.
Practice relevance suggests that including ESAs in CHF management could be considered in patients with anaemia at high risk of recurrent hospital admissions. The certainty of the evidence is moderate, and serious adverse events were not reported.