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[Continuous platelet infusion in patient refractory to platelet transfusion : a retrospective study].

Platelet transfusion is commonly used for the prevention of bleeding in central thrombocytopenia. It is estimated that 7-34 % of chronically transfused patients become progressively refractory until they no longer have an increase in post-transfusion platelet count. In this case, and in the presence of bleeding, a therapeutic option is continuous transfusion (CT) of platelet concentrates (PC). We performed a retrospective study of patients at the University Hospital of Liege who received a CT between 01/01/2019 and 31/12/2020. We explored the etiology, immune or non-immune, of the refractory state and analyzed the clinical and biological evolution after TC. In our cohort, 13 patients received CT during the study period; for 8 of them, the refractory state was explained by non-immune causes. The mean platelet count increased during CT and in 61 % of cases, an improvement in bleeding symptomatology was obtained.