Blood Transfusion 2/2017 - Thematic issue on "Red blood cell storage and clinical outcomes: new insights" (March-April)
Modelling the effects of blood component storage lesions on the quality of haemostatic resuscitation in massive transfusion for trauma
Authors:  James A. Mays, John R. Hess
Pages:  153-157
To cite this article:  Blood Transfus 2017; 15: 153-7
Doi:  10.2450/2017.0310-16
Published online:  20/02/2017

Background. All blood components undergo loss of potency during storage. These loss-of-potency storage lesions are important in trauma resuscitation because they reduce the haemostatic capacity of mixtures of components that attempt to reconstitute whole blood. Even red cell storage-related loss of potency, which averages 17% with modern additive solutions, is important because 6 units of red cells must be given to achieve the effect of 5 fully potent units. 
Materials and methods. Loss of potency of stored units of red blood cells, plasma, platelets, and cryoprecipitate were summed for dilutional, storage-related, pathogen reduction-related, and splenic sequestration-related causes and expressed as fractional plasma coagulation factor concentrations and platelet counts. 
Results. Production of reconstituted whole blood from 1:1:1 unit ratios of red cells:plasma:platelets is associated with a 38% loss of plasma coagulation factor concentration and 56% loss of platelets. Storage losses of 17% for red cells, 10% for coagulation factors, and 30% for platelets are additive to pathogen reduction-related losses of 18% for coagulation factors and 30% for platelets. 
Discussion. Component preparation and storage-related losses of potency for all blood components are serious problems for trauma resuscitation. Even red cell storage contributes to this problem and this can be made better in ways that can save many lives each year.

Keywords: red cell recovery, red cell loss of function, haemostatic resuscitation, damage control resuscitation.
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