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Acquired hemolytic anemia

Last edited: 4/15/2026

Overview

Acquired hemolytic anemia results from abnormal destruction of red blood cells beyond normal physiological levels, often due to autoimmune mechanisms, infections, medications, or mechanical factors 1.

Diagnosis

  • Clinical features: Pallor, fatigue, jaundice, dark urine, and hemoglobinuria 1.
  • Laboratory tests: Elevated reticulocyte count, decreased hemoglobin, elevated lactate dehydrogenase (LDH), and indirect bilirubin 1.
  • Direct antiglobulin test (DAT): Essential for diagnosing autoimmune hemolytic anemia 1.
  • Hemoglobin electrophoresis: Useful for identifying specific hemoglobinopathies or variants 1.
  • Flow cytometry: Can confirm DAT results and identify specific antibodies 1.
  • Red blood cell morphology: Examination for schistocytes or other abnormalities indicative of mechanical hemolysis 1.

    • Management

  • First-line treatments:
    • - Immunosuppressive therapy: Corticosteroids (dose varies; consult specific guidelines) 1. - Splenectomy: Considered in refractory cases or when hypersplenism is present 1.
  • Adjunctive treatments:
    • - Intravenous immunoglobulin (IVIG): For rapid control of hemolysis in severe cases 1. - Rituximab: For refractory autoimmune hemolytic anemia 1. - Avoidance of triggers: Discontinue offending medications or treat underlying infections 1.

    Special Populations

  • Pregnancy: Management focuses on balancing maternal and fetal well-being, often requiring close monitoring and individualized immunosuppressive therapy 1.
  • Pediatrics: Similar principles apply but with careful consideration of growth and development; corticosteroids are commonly used 1.
  • Elderly: Increased vigilance for comorbidities; treatment should be tailored to minimize side effects 1.
  • Comorbidities: Presence of other conditions may influence treatment choices, emphasizing the need for multidisciplinary care 1.

    • Key Recommendations

  • Reuse cellulose acetate membrane strips for electrophoretic analysis up to 6-7 times to reduce costs without compromising accuracy (Evidence: Expert opinion) 1.
  • Perform the direct antiglobulin test (DAT) as a cornerstone diagnostic tool for autoimmune hemolytic anemia (Evidence: Expert opinion) 1.
  • Initiate corticosteroid therapy as first-line treatment for autoimmune hemolytic anemia, adjusting doses based on clinical response (Evidence: Expert opinion) 1.

    • References

    1 Satwekar MM. Reuse of cellulose acetate membrane strips for protein and haemoglobin electrophoretic analysis. Indian journal of medical sciences 1997. link

    Original source

    1. [1]
      Reuse of cellulose acetate membrane strips for protein and haemoglobin electrophoretic analysis. — Satwekar MM Indian journal of medical sciences (1997)
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