The Role of Anatomic Factors in Nutritional Autonomy After Extensive Small Bowel Resection

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Abstract
Background: It is difficult to predict which patients with a postsurgical short bowel will require long‐term parenteral nutrition. Methods: We performed a retrospective prognostic study for the time to home parenteral nutrition or death from malnutrition (nonautonomy), on the basis of 103 patients with a residual short bowel of 17 to 150 cm. The influence of anatomic variables was summarized through the use of Cox regression model.Results:Of the 103 patients included, 24 lost nutritional autonomy. Three anatomic variables were identified as having independent predictive information; remaining small bowel length (measured on small bowel x‐rays;p=.0001), and jejunoileal anastomosis (p =.01) promoted autonomy, whereas end jejunostomy (p =.002) increased the risk of losing nutritional autonomy.Conclusions:On the basis of these results and on the relative weight of these variables, high‐risk patients for loss of nutritional autonomy were defined as those with jejunoileal anastomosis and a remaining small bowel length < 35 cm, patients with jejunocolic anastomosis and remaining small bowel length < 60 cm, and patients with an end jejunostomy and remaining small bowel length < 115 cm. This classification was thereafter validated on a prospective series of 32 patients.(Journal of Parenteral and Enteral Nutrition20:275–280, 1996)