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  • Title: Correlation of platelet crossmatch results by Solid Phase Red Cell Adherence Assay (SPRCA) with post-transfusion platelet count increment in adult hemato-oncology patients of a tertiary care oncology centre in India.
    Author: Desai P, Sontakke P, Rajadhyaksha S, Navkudkar A.
    Journal: Transfus Apher Sci; 2020 Oct; 59(5):102842. PubMed ID: 32586771.
    Abstract:
    AIMS: To assess platelet crossmatch result by SPRCA and find its correlation with post-transfusion platelet count increment among adult hemato-oncology patients. METHODS: A prospective observational pilot study of 50 adult hematologic malignancy patients previously transfused, but not already known to be transfusion-refractory and without any nonimmune causes for inadequate response to platelet transfusion were included after obtaining informed consent. They were transfused one unit of ABO identical single donor platelet. Ten minutes to 1 -h post-transfusion CCI was calculated. CCI ≥ 7500 was considered as adequate response. Post-transfusion crossmatching by SPRCA was performed by using preserved platelet samples from donor units with the serum of the respective patient. Statistical analysis of the correlation between platelet crossmatch results and CCI was done. RESULTS: Out of 50 crossmatches, 78% (39/50) showed compatible and 22% (11/50) showed incompatible results. Among 39 compatible results, 87.2% (34/39) showed adequate CCI and 12.8% (5/39) showed inadequate CCI. Among 11 incompatible results, 18.2% had adequate CCI and 81.8% had inadequate CCI. The difference between the response in terms of CCI to compatible and incompatible crossmatches was found to be statistically significant (p < 0.05). Other variables like age, sex, number of previous transfusions and underlying clinical condition of the patient were not found to have any effect on the compatibility of crossmatch. CONCLUSIONS: Transfusion of crossmatched platelets to non-refractory, multiply transfused hematological malignancy patients without serious illness might provide a small benefit over transfusing randomly selected platelets, though these data must be confirmed with a larger sample size.
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