According to results of the univariate analysis, the variables included in the multivariate logistic analysis for “Death” were: age (years), Apache-II score, SOFA at admission, SOFA on third day, tracheobronchitis, bacteremia, CRRT, antimicrobial treatments, transferrin (md/dL), albumin (g/dL), bilirubin (mg/dL), urea (mg/dL), creatinine (mg/dL), prescribed protein_g/day, protein intake_g/day. This evidence concerns the gene ALB and tracheobronchitis.