No adverse reaction was observed in both groups.Conclusions Ala-Gln-supplemented PN improved nitrogen balance and maintained intestinal permeability ,reduced complications. 結論添加谷氨醯胺的腸外營養可以維持腸粘膜通透性，進一步改善氮平衡，減少併發症。
Dietary fiber does not have significant effect on protein metabolism and nitrogen balance, but some fiber can decrease the absorption and availability of lipids and carbohydrates. 膳食纖維對於蛋白質代謝及氮平衡的影響不大，但可減少脂類和碳水化合物的吸收及利用。
