Background: In trauma, as interventions are carried out to stop bleeding, ongoing resuscitation with blood products is of vital importance. As transfusion policy in exsanguinating patients cannot be based on laboratory tests, transfusion of blood products is performed empirically or 'blindly'. The aim of this study was to delineate 'blind' transfusion practice in the hectic clinical situation of exsanguination. Methods: Seventeen trauma patients were selected who died due to uncontrolled bleeding despite haemostatic interventions within 24 h after admission and who received more than 12 U of RBC. Transfusion data were compared with a theoretically optimal transfusion model with a fixed ratio between units of RBC, FFP, and platelets. The difference between the observed and expected amounts of blood products was calculated. Results: The patients (82%) received insufficient amounts of FFP and platelets when compared to the calculated amounts. The total numbers of transfused FFP and platelets were on average 50% lower than the calculated amounts. Regression models showed an increase of FFP and platelets with increasing amounts of RBC but not in sufficient quantities. Conclusion: Exsanguinating trauma patients receiving massive transfusions are subject to 'blind' transfusion. This is associated with insufficient transfusion of both FFP and platelets, which may aggravate bleeding. A 'blind' transfusion strategy consisting of a validated guideline with a predefined ratio of the different blood products, timing of laboratory tests as well as a sound logistic protocol facilitating this procedure, involving the blood bank and treating physicians, is needed urgently. © 2006 Elsevier Ireland Ltd. All rights reserved.
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