Iron therapy effect on chronic heart failure and iron-deficiency anemia: a systematic review and meta-analysis.

Background: Heart failure complicated with iron deficiency is associated with impaired functional capacity, poor quality of life, increased hospitalization, and mortality. This systematic review and meta-analysis were conducted to assess the effect of oral and intravenous iron therapy on functional capacity, hospitalization risk, and mortality risk in patients with chronic heart failure and iron-deficiency anemia.

Methods: Search for published scientific articles using the PRISMA (Preferred Reporting, Items for Systematic Reviews and Meta-Analysis) method conducted on Cochrane Library, PubMed Central, and Medline databases published in the last 20 years. Further systematic review and meta-analysis using RevMan version 5.4 were performed based on the included published scientific articles.

Results: Based on the meta-analysis of included studies, the analytical results of intravenous iron therapy in patient with chronic heart failure and iron-deficiency anemia showed there is 30.82 (MD = 30.82: 95% CI 18.23-43.40) meter change in patient 6MWT, there is likelihood of 0.55 times (55%) (RR = 0.45: 95% CI 0.30-0.68) lower risk of hospitalization and lower risk of mortality (RR = 0.18: 95% CI 0.04-0.78), because heart failure worsening both with statistically significant overall effect compared with placebo.

Conclusions: There is statistically significant effect of intravenous iron therapy to improve patient functional capacity and reduce likelihood of hospitalization risk of 0.55 times (55%) in patient with chronic heart failure and iron-deficiency anemia.