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. 2000 Jan;231(1):112-8.
doi: 10.1097/00000658-200001000-00016.

Small amount of low-residue diet with parenteral nutrition can prevent decreases in intestinal mucosal integrity

K Omura  1 , K Hirano, E Kanehira, K Kaito, M Tamura, S Nishida, K Kawakami, Y Watanabe
Affiliations

Small amount of low-residue diet with parenteral nutrition can prevent decreases in intestinal mucosal integrity

K Omura et al. Ann Surg. 2000 Jan.

Abstract

Objective: To investigate the suitable combination ratio of low-residue diet (LRD) and parenteral nutrition (PN) for nutritional support of surgical patients.

Summary background data: Bacterial translocation (BT) is a severe complication of total parenteral nutrition (TPN). However, it is sometimes impossible to supply sufficient amounts of nutrients to surgical patients by the enteral route. The authors reported previously that concomitant use of LRD with PN provided preferable nutritional support for patients undergoing surgery for colorectal cancer.

Methods: Ninety male Donryu rats were used for three experiments. In experiment 1, rats were divided into two groups to receive TPN or total enteral nutrition with LRD. In experiment 2, rats were divided into six groups, receiving variable amounts of LRD. In experiment 3, rats were divided into five groups to receive isocaloric nutritional support with variable proportions of PN and LRD. Intestinal permeability was assessed by monitoring urinary excretion of phenolsulfonphthalein. BT was assessed in tissue cultures of mesenteric lymph nodes and spleen.

Results: In experiment 1, increases in intestinal permeability and BT were observed in rats maintained on 7-day TPN, but not in those maintained on total enteral nutrition for up to 14 days. In experiment 2, the changes in body weight of rats were correlated with the dose of LRD. However, the intestinal permeability was increased only in rats receiving LRD at 15 kcal/kg per day. In experiment 3, additive LRD corresponding to 15% of total caloric intake prevented increases in intestinal permeability and BT.

Conclusion: Combined nutritional therapy consisting of PN and small amounts of LRD can provide better nutritional support than TPN for surgical patients.

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Figure 1. Body weight changes in experiment 2. The body weight changes of the rats were significantly correlated with the calories provided in each group.
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