RT Book, Section A1 Lichtman, Marshall A. A1 Kaushansky, Kenneth A1 Prchal, Josef T. A1 Levi, Marcel M. A1 Burns, Linda J. A1 Armitage, James O. SR Print(0) ID 1133363078 T1 Hemolytic Anemia Resulting from Warm-Reacting Antibodies T2 Williams Manual of Hematology, 9e YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9781259642470 LK hemonc.mhmedical.com/content.aspx?aid=1133363078 RD 2024/04/19 AB In autoimmune hemolytic anemia (AHA), shortened red blood cell (RBC) survival is the result of host antibodies that react with autologous RBC.AHA may be classified by whether an underlying disease is present (secondary) or not (primary or idiopathic) (Table 22–1).AHA may also be classified by the nature of the antibody (Table 22–2).“Warm-reacting” antibodies are usually of the immunoglobulin G (IgG) type, have optimal activity at 37°C, and bind complement.“Cold-reacting” antibodies show affinity at lower temperatures (see Chap. 23).Occasionally, mixed disorders occur with both warm and cold antibodies.Warm antibody AHA is the most common type.