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Extrinsic haemolytic anaemia

Authoring team

Immune causes:

  • iso-immune - incompatibility, for example haemolytic disease of the newborn, blood transfusion incompatibility
  • autoimmune haemolytic anaemia

Non-immune causes:

  • red cell fragmentation:
    • in patients with prosthetic valves
    • "march haemoglobinuria" in soldiers and marathon runners
    • direct shearing of red cells in disseminated intravascular coagulation
    • thrombotic thrombocytopenia purpura
  • sequestration in mononuclear phagocyte system - hypersplenism
  • infections e.g. malaria, black water fever, Clostridium welchii
  • chemicals e.g. lead, drugs, toxins

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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