This is a heterogeneous group of specialists from various areas whose common interest is research into new strategies for the optimal management of patients admitted to hospital emergency rooms. In particular, strategies for the rationalisation and optimisation of the use of blood components in various clinical situations are especially critical to emergency departments. In this context and in the field of clinical research, the interests of our group are focused on two priority lines of research: “Optimisation of the use of blood components”, divided into 3 sublines that are covered in the following point, and “Risk stratification for critical patients”.