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  • Title: Donors' blood group declaration before donation can be used as a tool for electronic crossmatching.
    Author: Arslan O.
    Journal: Transfus Med; 2005 Dec; 15(6):487-92. PubMed ID: 16359420.
    Abstract:
    Electronic crossmatching (E-XM) is used to detect ABO incompatibility. In developing countries, as many of the donations are from first-time donors, it is difficult to guarantee the accuracy of the ABO/Rh label on these units to use them for E-XM. This problem was overcome with a new software 'hemosoft', using donors' blood group declaration before donation as a tool for E-XM. During registration, donors either declare their blood group or give no comment. For, ABO/Rh grouping, either two results from different donations or only one in concordant with the declaration before donation is needed. If there is a conflict, second typing is performed from the unit segment. If donors give no declaration, two different technicians perform typing, one from the sample tube and the other from the unit segment. Of 18,618 donations performed, 640 (3%) were repeated and the rest were first-time donations. In 16,327, typing was performed once, as the blood group declaration and the typing results were identical. In 2407, grouping was performed twice, as donors gave no declaration or conflicts between declaration and typing results were found. No labelling or wrong unit-release errors were detected in units donated, typed and labelled in our centre. In 26,402 donations, 16,314 (61.8%) E-XMs were performed. No major haemolytic transfusion reaction was recorded. Donors' ABO/Rh declaration before donation can be used as a tool for E-XM, instead of the requirement for serological confirmation or a second donation to guarantee grouping.
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