Intravenous Iron Therapy Versus Blood Transfusion for Iron Deficiency Anemia: A Systematic Review

Area of Science:

• Hematology
• Clinical Medicine
• Evidence-Based Practice

Background:

• Iron deficiency anemia is a common condition requiring effective treatment strategies.
• Both blood transfusion and intravenous iron therapy are used to increase hemoglobin levels.
• Comparing the efficacy and duration of these treatments is crucial for clinical decision-making.

Purpose of the Study:

• To systematically review and compare the effects of blood transfusion versus intravenous iron therapy on hemoglobin levels.
• To assess the timing and duration of hemoglobin level changes following each treatment modality.

Main Methods:

• A systematic literature search was conducted in PubMed, Cochrane, and Embase databases.
• Included studies compared intravenous iron with blood transfusion in patients with iron deficiency anemia.
• Study quality was assessed using the Cochrane Risk of Bias Tool and Newcastle-Ottawa Quality Assessment Scale.

Main Results:

• Three out of five included studies reported significantly higher hemoglobin levels with intravenous iron at 3 weeks or later.
• Two studies found similar hemoglobin levels between the two treatments.
• Blood transfusion led to higher hemoglobin levels within 3 weeks, but this effect was less sustained than with intravenous iron.

Conclusions:

• Blood transfusion provides a rapid, short-term increase in hemoglobin, whereas intravenous iron offers a more gradual, longer-lasting effect.
• The findings are limited by the small number of studies and potential for bias.
• Further high-quality research is warranted to definitively compare these interventions.