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[Can thrombocyte crossmatching improve the efficiency of platelet transfusion?]
V Weisbach1, T Zeiler, J Zingsem
1Abt. Innere Medizin, Universitätsklinikum Rudolf Virchow--Standort Charlottenburg, Freie Universität Berlin.
Insights
Crossmatching platelet concentrates using Capture-P identified reduced posttransfusion response in ABO incompatible transfusions. Positive Capture-P results correlated with decreased corrected count increment (CCI), indicating antibody reactions.
Area of Science:
- Transfusion Medicine
- Immunology
- Hematology
Context:
- Platelet transfusions are critical for managing thrombocytopenia.
- ABO major incompatibility can lead to reduced platelet survival.
- Accurate crossmatching methods are essential for transfusion efficacy.
Purpose:
- To evaluate the efficacy of the Capture-P solid phase immunoassay for crossmatching platelet concentrates.
- To assess the impact of ABO major incompatibility on posttransfusion platelet response.
- To correlate positive Capture-P results with corrected count increment (CCI).
Summary:
- Crossmatching was performed on 220 single donor platelet concentrate transfusions using the Capture-P immunoassay.
- Posttransfusion response was assessed by calculating the corrected count increment (CCI).
- Reduced posttransfusion response in ABO major incompatible platelet transfusions was observed primarily in those with a positive Capture-P crossmatch, suggesting IgG antibody involvement.
Impact:
- The findings highlight the utility of Capture-P in predicting transfusion outcomes for ABO incompatible platelet transfusions.
- This supports the use of solid phase immunoassays for pre-transfusion compatibility testing.
- Improved crossmatching may enhance the effectiveness of platelet transfusions and patient safety.
Abstract:
We did crossmatching in 220 transfusions of single donor platelet concentrates using the purchaseable solid phase immunoassay Capture-P (Immucor, Rödermark, FRG), checking posttransfusion response by calculating the corrected count increment (CCI). Our results show that posttransfusion response in transfusions of ABO major incompatible platelet concentrates is virtually reduced only in those transfusions accompanied by a positive crossmatch in Capture-P. As Capture-P can detect IgG antibodies only, positive test results could well be due to a reaction of recipient immune isoagglutinins with ABH antigens expressed on donor platelets, therefore.