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Autoimmune hemolytic anemia (AIHA) is an autoimmune disorder which occurs when antibodies directed against the person's own red blood cells (RBCs) cause them to burst , leading to an insufficient number of oxygen-carrying red blood cells in circulation . The lifetime of the RBCs is reduced from the normal 100–120 days to just a few days in ...
The most common antibody isotype involved in warm antibody AIHA is IgG, though sometimes IgA is found. The IgG antibodies attach to a red blood cell, leaving their F C portion exposed with maximal reactivity at 37 °C (versus cold antibody induced hemolytic anemia whose antibodies only bind red blood cells at low body temperatures, typically 28–31 °C).
Autoimmune hemolytic anemia: Anti-red blood cell antibodies Confirmed 1-3 per 100,000 [89] Immune thrombocytopenia: Anti-platelet antibodies Confirmed 3.3 per 100,000 (adults), 50 per 100,000 (children) [90] Thrombotic thrombocytopenic purpura: ADAMTS13 autoantibodies Confirmed 1-2 per million [91] Antiphospholipid syndrome: Antiphospholipid ...
[1] [2] These immune cytopenias may occur simultaneously or sequentially. [1] [3] Its overall phenotype resembles a combination of autoimmune hemolytic anemia and immune thrombocytopenic purpura. [1] [4] [5] Autoimmune hemolytic anemia is a condition in which the red blood cells that normally carry oxygen are destroyed by an autoimmune process ...
Autoimmune hemolytic anemia: D59.0-D59.1: Autoimmune hemolytic anemia (AIHA) is a type of hemolytic anemia where the body's immune system attacks its own red blood cells (RBCs), leading to their destruction . [28] [29] Types of AIHA include warm autoimmune hemolytic anemia, cold agglutinin disease, and paroxysmal cold hemoglobinuria.
Immune-mediated causes could include transient factors as in Mycoplasma pneumoniae infection (cold agglutinin disease) [14] or permanent factors as in autoimmune diseases like autoimmune hemolytic anemia [15] (itself more common in diseases such as systemic lupus erythematosus, rheumatoid arthritis, Hodgkin's lymphoma, and chronic lymphocytic ...
AIHA can be classified as warm autoimmune hemolytic anemia or cold autoimmune hemolytic anemia, which includes cold agglutinin disease and paroxysmal cold hemoglobinuria. These classifications are based on the characteristics of the autoantibodies involved in the pathogenesis of the disease.
The direct Coombs test is used to test for autoimmune hemolytic anemia, a condition where the immune system breaks down red blood cells, leading to anemia. The direct Coombs test is used to detect antibodies or complement proteins attached to the surface of red blood cells. To perform the test, a blood sample is taken and the red blood cells ...