The inflammatory response coming of surgery mainly affects surgical patients' outcome. Many factors may attributed to this response, such as the kind of operation, the extent of surgical trauma, the patient's medical history and therapy, as well as the type of anesthesia used. Apart from that, the kind of fluids administered for volume replacement was revealed to alter the inflammatory processes. Several studies have addressed on this issue mainly involved abdominal surgery and provided compelling evidence that perioperative fluid optimization produces benefits for the patient, with regard to inflammatory biomarkers such as cytokines, matrix metalloproteinases, intercellular adhesion molecule-1(ICAM-1). They support that the different volume replacement strategies, using only crystalloids or combination of crystalloids with colloids (HES 130/0,4), may have important impact on immune response. However, the relevant studies investigated different inflammatory biomarkers, and usually involved either metalloproteinases, and their inhibitors (TIMPs) or cytokines.