Infection, Intraabdominal

To early evaluate the serum levels of calprotectin in patients suffering from intra-abdominal sepsis requiring a surgical treatment. The research project aims to investigate the role of serum calprotectin in the diagnosis of sepsis and to establish whether its level significantly correlates with different degree of disease severity and with short and long-term outcomes. If these associations were confirmed, serum calprotectin would represent an easily and rapidly detectable biomarker able to predict the severity of sepsis.