Abstract:
BACKGROUND:In cases of warm autoimmune hemolytic anemia (WAIHA), crossmatch incompatible RBCs are most often used for transfusion. The determination of the in vivo survival of transfused and autologous RBCs in WAIHA is helpful in the assessment of the efficacy of transfusion and other therapeutic interventions. CASE REPORT:A 38-year-old man presented with acute WAIHA, thrombocytopenia, and neutropenia. Steroids and IVIG therapy were ineffective, and the patient received RBCS: Because of increasing hemolysis and persisting thrombocytopenia, splenectomy was performed, resulting in partial remission. Further improvement was achieved by immunosuppressive therapy. MATERIALS AND METHODS AND RESULTS:Survival of transfused and autologous RBCs was determined, using a flow cytometric method based on the determination of different blood group antigens of patient and donor RBCS: The survival of autologous and transfused RBCs before splenectomy was determined on two consecutive days. The life span of autologous RBCs remained rather stable at 69 and 64 hours on Days 10 and 11, respectively, whereas the life span of transfused RBCs decreased from 186 hours to 25 hours. After splenectomy, the life span of transfused RBCs almost normalized: 43 days at postsplenectomy Day 3 and 87 days at postsplenectomy Day 69. CONCLUSION:Flow cytometry was successfully used to determine changing hemolytic activity during the clinical course of WAIHA. Additionally, the survival of transfused RBCs could be measured, which may be helpful to judge for the compatibility of allogeneic RBCS: Thus, we were able to show the therapeutic inefficacy of steroids and immunoglobulins, and quick improvement after splenectomy.
journal_name
Transfusionjournal_title
Transfusionauthors
Zeiler T,Müller JT,Hasse C,Kullmer J,Kretschmer Vdoi
10.1046/j.1537-2995.2001.41040493.xsubject
Has Abstractpub_date
2001-04-01 00:00:00pages
493-8issue
4eissn
0041-1132issn
1537-2995journal_volume
41pub_type
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