Retrospective study on the Delta Shock Index associated with age and the Glasgow Coma Score (dSIAG) as a prognostic scale for mortality in polytrauma patients Ana Victoria Juárez San Juan; Paula Juárez San Juan; Manuel Artiles Armas; Laura Cano Contreras; Paula Beltrán Calero; Carlos Jorge Ripper; Pedro Rodriguez Suárez; Jorge L. Freixinet Gilart;