Parenteral nutrition in intestinal failure

Abstract

Intestinal failure is a consequence of extensive surgical resection resulting in anatomic loss and/or functional impairment in motility or absorptive capacity. The condition is clinically characterized by the inability to maintain fluid, energy, protein, electrolyte, or micronutri- ent balance when on a conventionally accepted, normal diet. Parenteral nutrition (PN) is the cornerstone of management until intestinal adaptation returns the patient to a PN-independent state. Intestinal length, residual anatomic segments and motility determine the need for and duration of parenteral support. The goals of therapy are to provide sufficient nutrients to enable normal growth and development in children, and support a healthy functional status in adults. This review addresses indications for PN, the formulation of the PN solution, patient monitor- ing, and considerations for prevention of PN-associated complications. With the ultimate goal of achieving enteral autonomy, the important role of diet, pharmacologic interventions, and surgery is discussed.