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Cold‐stored leukoreduced whole blood: Extending the time between donation and filtration has minimal impact on in vitro quality
Author(s) -
Schubert Peter,
Chen Zhongming,
Bhakta Varsha,
Culibrk Brankica,
Wambolt Richard,
Sheffield William P.,
Devine Dana V.,
McTaggart Ken
Publication year - 2021
Publication title -
transfusion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.045
H-Index - 132
eISSN - 1537-2995
pISSN - 0041-1132
DOI - 10.1111/trf.16540
Subject(s) - leukoreduction , thromboelastometry , whole blood , hemolysis , clotting time , platelet , filtration (mathematics) , clotting factor , andrology , in vitro , medicine , chemistry , immunology , biochemistry , statistics , mathematics
Background Leukoreduced whole blood (LR‐WB) has received renewed attention as alternative to component‐based transfusion in trauma. According to the manufacturer's instructions, leukoreduction should be carried out within 8 h after collection. This study assessed impact of (1) WB collection bag, (2) LR filtration, and (3) timing of filtration on in vitro quality. Study Design and Methods WB collected into different vendor bags was held at room temperature for <8 h or >16 h but <24 h prior to LR. In vitro quality was assessed before and after filtration, and throughout 3 weeks of storage at 4°C. Cell count and hemoglobin levels were determined by hematology analyzer, platelet activation, and responsiveness to ADP by surface expression of P‐selectin by flow cytometry, hemolysis by HemoCue, and metabolic parameters by blood gas analyzer. Hemostatic properties were assessed by rotational thromboelastometry. Plasma protein activities and clotting times were determined by automated coagulation analyzer or quantitative immunoblotting. Results Bag type had no impact on WB in vitro quality. LR by filtration had some impact, but is aligned with data in the literature. The time between donation and filtration resulted in some statistically significant differences in metabolic activity, platelet yield, platelet activation, and factor protein activity initially; however, these differences in in vitro quality attributes decreased throughout 21‐day cold storage. Conclusion WB hold time showed only a minor impact on WB in vitro quality, so it may be possible for blood processing facilities to explore extended hold times prior to filtration in order to provide greater operational flexibility.