Abstract : The trauma-induced coagulopathy (TIC) is a frequent and serious pathology, whose clinical diagnosis remains arduous. It constitutes a real challenge in the management of these patients. In emergency situations, the management of TIC can lead the practitioner to administer blood products «blindly», ie without reliable monitoring in support. This exposes to the risk of using blood products by default or excess, at a time when stocks of blood banks are becoming more and more worrying, thus constituting a public health issue. In this article we propose the use of a viscoelastic technique by ROTEM® according to an algorithm to effectively guide the use of blood products.