• Scand J Trauma Resus · Jul 2018

    Observational Study

    Modelling the association between fibrinogen concentration on admission and mortality in patients with massive transfusion after severe trauma: an analysis of a large regional database.

    • Pierre Bouzat, François-Xavier Ageron, Jonathan Charbit, Xavier Bobbia, Pauline Deras, Jennifer Bas Dit Nugues, Etienne Escudier, Guillaume Marcotte, Marc Leone, and Jean-Stéphane David.
    • Grenoble Alps Trauma center, Department of anesthesiology and intensive care medicine, Grenoble University Hospital, F-38000, Grenoble, France. PBouzat@chu-grenoble.fr.
    • Scand J Trauma Resus. 2018 Jul 9; 26 (1): 55.

    BackgroundThe relationship between fibrinogen concentration and traumatic death has been poorly explored after severe trauma. Existing studies analysed this relationship in unselected trauma population, often considering fibrinogen concentration as a categorical variable. The aim of our study was to model the relationship between fibrinogen concentration and in-hospital mortality in severe trauma patients requiring massive transfusion using fibrinogen on admission as a continuous variable.MethodsWe designed a retrospective observational study based on prospectively collected data from 2009 to 2015 in seven French level-I trauma centres. All consecutive patients requiring a transfusion of at least 10 packed red blood cells (RBC) within 24 h were included. To assess the relationship between in-hospital death and fibrinogen concentration on admission, we performed generalized linear and additive models with death as a dependent variable. We also assessed the relationship between fibrinogen concentration below 1.5 g.L- 1 and potential predictors.ResultsWithin the study period, 366 patients were included. A non-linear relationship was found between fibrinogen concentration and death. Graphical modelling of this relationship depicted a negative association between fibrinogen levels and death below a fibrinogen concentration of 1.5 g.L- 1. Predictors of low fibrinogen concentration (< 1.5 g.L- 1) were systolic blood pressure, Glasgow coma scale and haemoglobin concentration on admission.ConclusionsA complex and robust approach for modelling the relationship between fibrinogen and mortality revealed a critical fibrinogen threshold of 1.5 g.L- 1 for severe trauma patients requiring massive transfusion. This trigger may guide the administration of procoagulant therapies in this context.

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