For these reasons, we investigated the predictive value of the CRP concentrations on the first day of ICU admission compared to other inflammatory parameters and the time course of CRP in relation to ICU outcome, defined as favorable (discharged alive from the ICU, without modification of antibiotherapy) or unfavorable (modification of antibiotherapy during the ICU stay, a new abdominal surgical intervention for uncontrolled sepsis with or without modification of the initial antibiotic regimen, or ICU death), in critically ill patients admitted to the ICU after abdominal surgery. Here, CRP is linked to Sepsis.