• Arch Surg Chicago · Sep 1998

    Is there a limit to massive blood transfusion after severe trauma?

    • G C Velmahos, L Chan, M Chan, R Tatevossian, E E Cornwell, J A Asensio, T V Berne, and D Demetriades.
    • Department of Surgery, University of Southern California Medical School and the Los Angeles County + USC Medical Center, 90033, USA. velmahos@hsc.usc.edu
    • Arch Surg Chicago. 1998 Sep 1;133(9):947-52.

    ObjectiveTo examine the hypothesis that the futility of short-term care for trauma patients requiring emergency operation can be determined based on the number of units of blood transfused and associated risk factors.DesignA 4-year retrospective review of a cohort of critically injured patients who underwent an emergency operation.SettingA large-volume, academic level I, urban trauma center.PatientsOne hundred forty-one consecutive patients received massive blood transfusions of 20 U or more of blood during preoperative and intraoperative resuscitation (highest, 68 U). There were 43 survivors (30.5%) and 98 nonsurvivors (69.5%).Main Outcome MeasuresMortality.ResultsThe number of blood units transfused did not differ between survivors and nonsurvivors (mean +/- SD, 31 +/- 11 vs 32 +/- 10; P = .52). Stepwise multiple regression analysis identified 3 independent variables associated with mortality: need for aortic clamping, intraoperative use of inotropes, and intraoperative time with a systolic blood pressure of 90 mm Hg or less. However, blood usage was not different among the subgroups of patients who had 1 or more of these risk factors. When patients were stratified according to the amount of massive blood transfusion (20-29, 30-39, 40-49, and 50-68 U), the incidence of risk factors was not different across the 4 subgroups. Survival in the presence of risk factors was not affected by the amount of blood transfused.ConclusionsAlthough mortality among critically injured patients requiring operation and massive blood transfusion can be correlated with independent risk factors, discontinuation of short-term care cannot be justified based on the need for massive blood transfusion of up to 68 units.

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