Anemia Diagnosis and Treatment
Diagnosis
- Anemia is defined as a reduction in hemoglobin concentration, red-cell count, or packed cell volume below normal levels 1
- Classification by severity:
- Diagnostic workup should include: Peripheral blood smear 1 and assessment for occult blood loss in stool and urine 1
Treatment
- Oral iron supplementation is first-line therapy: Ferrous sulfate 324 mg (65 mg elemental iron) daily or twice daily, administered between meals to maximize absorption 4
- Continue iron treatment for 2-3 months after hemoglobin normalization to replenish iron stores 4
- Parenteral iron therapy is indicated when malabsorption is present 3 or rapid repletion is needed 5
- Treat the underlying cause: Investigate and address gastrointestinal blood loss in men and postmenopausal women 3
- Erythropoiesis-stimulating agents (ESAs) may be considered in specific situations: Not recommended for mild to moderate anemia with heart disease 2, 6, 7
- ESAs may be appropriate for chemotherapy-induced anemia with Hb ≤10 g/dl 1, 8
Special Considerations
- Transfusion therapy is reserved for severe symptomatic anemia or when rapid correction is needed 2
- Use restrictive transfusion strategy (Hb trigger 7-8 g/dl) to minimize complications 2, 6, 7
- Potential complications of transfusions include iron overload, infection transmission, and immune suppression 1
- Genetic disorders of iron metabolism require specialized treatment approaches, potentially including combination therapy with iron, erythropoietin, and/or transfusions 9
Monitoring and Follow-up
- For iron deficiency anemia: Repeat hemoglobin measurement after 4 weeks of treatment, and continue treatment for 2 more months after correction 4
- For other types of anemia: Monitor based on the underlying condition and treatment approach, with regular assessment of iron status and hemoglobin levels 4