Eisenmangel: Erkennen und behandeln

Iron Deficiency in Heart Failure: An Overview

Iron deficiency is an extremely common comorbidity in patients with heart failure, affecting up to 50% of all ambulatory patients. It is associated with reduced exercise capacity and physical well-being and reduced quality of life. Cutoff values have been identified for diagnosing iron deficiency in heart failure with reduced ejection fraction as serum ferritin, <100 μg/l, or ferritin, 100 to 300 μg/l, with transferrin saturation of <20%. Oral iron products have been shown to have little efficacy in heart failure, where the preference is intravenous iron products. Most clinical studies have been performed using ferric carboxymaltose with good efficacy in terms of improvements in 6-min walk test distance, peak oxygen consumption, quality of life, and improvements in New York Heart Association functional class. Data from meta-analyses also suggest beneficial effects for hospitalization rates for heart failure and reduction in cardiovascular mortality rates. A prospective trial to investigate effects on morbidity and mortality is currently ongoing. This paper highlights current knowledge of the pathophysiology of iron deficiency in heart failure, its prevalence and clinical impact, and its possible treatment options.

[Iron deficiency in heart failure. A new diagnostic therapy algorithm - evidence-tested and workable]

BACKGROUND

Iron deficiency is a diagnostic and therapy-requiring comorbidity in heart failure with a negative impact on the prognosis. Even without signs of anemia, iron deficiency can lead to reduced performance with physical weakness and dyspnoea in patients with chronic heart failure.

METHOD

Well-known cardiologists discussed this at an expert meeting on the topic of iron deficiency in heart failure.

RESULTS AND CONCLUSIONS

Despite the high relevance for patients' outcome, this complication is still under-addressed, although specific diagnosis and effective therapy are possible and are also recommended in current ESC guidelines. A new evidence-tested algorithm should now help to facilitate diagnosis and therapy in everyday practice. The prerequisite is that it can be well integrated into clinical routine.