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  • Title: Frequency of delayed hemolytic transfusion reactions following antibody screening and immediate-spin crossmatching.
    Author: Pinkerton PH, Coovadia AS, Goldstein J.
    Journal: Transfusion; 1992; 32(9):814-7. PubMed ID: 1471244.
    Abstract:
    In view of the continuing controversy regarding the use of immediate-spin crossmatch procedures in preparing blood for transfusion to patients in whom unexpected clinically significant antibodies have not been found by antibody screening by the indirect antiglobulin test (IAT), a review of 8 years' experience with such a policy was conducted. In that period, 54,725 units of packed red cells or whole blood were transfused to 10,146 patients. Four clinically overt delayed hemolytic transfusion reactions and 18 clinically silent delayed serologic transfusion reactions were found. In 3 of the 22 patients, the offending antibody(ies) were detectable in the pretransfusion serum by an enzyme IAT, but none was detectable by routine saline IAT against either a three-cell screening panel or the transfused cells. Thus, the incorporation of saline indirect antiglobulin crossmatch would not have prevented the delayed reactions. It can be concluded that the use of a saline indirect antiglobulin crossmatch offers no significant advantage over the current policy of using only immediate-spin crossmatch for those patients whose pretransfusion serum gives negative results in a three-cell screen using a saline IAT.
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