Manipulations of the metabolic response for management of patients with severe surgical illness: review.

The metabolic response to severe surgical illness is complex and varied. Much recent laboratory and clinical research has focused on increasing our understanding of the metabolic response and the development of new therapies designed to modify this response. Antiinflammatory agents can target harmful aspects of the metabolic response; the immune system can be stimulated; and anabolic factors can be used in an attempt to enhance recovery. The nutritional support of the surgical patient remains crucial, but the effects of new additives are being studied in a variety of surgical conditions. As yet, few of these "novel" agents have found an established role in the management of surgical patients. This review focuses on many "novel" agents or those that do not yet have a clearly defined role in surgical illness. Clinical trials in the areas of severe sepsis, major surgical trauma, and major elective surgery have been emphasized.