Crit Care Med:早期肠内营养对直肠重大手术预后有益:必需氨基酸是否发挥作用

2017-06-30 MedSci MedSci原创

本研究旨在于比较早期肠内营养与早期肠外营养对直肠重大手术后的直接疗效和血浆氨基酸浓度的影响。之前的研究曾经显示,血浆谷氨酰胺浓度降低预示ICU患者预后较差。

本研究旨在于比较早期肠内营养与早期肠外营养对直肠重大手术后的直接疗效和血浆氨基酸浓度的影响。之前的研究曾经显示,血浆谷氨酰胺浓度降低预示ICU患者预后较差。

本研究为前瞻性、随机、非盲、单中心研究,目的为比较早期肠内营养和肠外营养对肠梗阻术后患者及晚期或复发性直肠癌术后患者预后的影响。通常来说,早期肠内营养可减少术后肠梗阻、吻合口瘘和住院时间。

来自三级医疗中心的123名需要手术治疗的晚期或复发性直肠癌患者将被纳入研究。

患者被随机性分为两组:经鼻饲行早期肠内营养组(n = 61)、经颈内静脉行早期肠外营养组(n = 62)。手术结束8小时后,患者血流动力学稳定后给予人工营养支持,两组受试者都给予口服摄入刺激胃肠蠕动。使用超高效液相色谱-串联质谱法对血液标本对血浆谷氨酰胺、瓜氨酸和精氨酸的浓度进行测定。

两组的基线浓度相当。直肠手术后很快就检测到血浆氨基酸浓度有所下降。肠外营养组术后第1天(P=0.027)和第5天(P=0.008)的血浆谷氨酰胺浓度均高于肠内营养组。肠外营养组第1天和第5天(P=0.001)的精氨酸浓度也显着升高(p<0.001)。

相比较肠外营养组来说,肠内营养组的血浆谷氨酰胺和精氨酸浓度都较低,然而预后却较肠外营养组更佳。所以我们得出结论,血浆氨基酸浓度和早期进行肠内营养可改善直肠重大手术预后并无显著相关性。

原始出处:

van Barneveld KW1, Smeets BJ,et al. Beneficial Effects of Early Enteral Nutrition After Major Rectal Surgery: A Possible Role for Conditionally Essential Amino Acids? Results of a Randomized Clinical Trial. Crit Care Med. 2016 Jun;44(6):e353-61. doi: 10.1097/CCM.0000000000001640.

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