Early postoperative Nutrison Fibre enteral nutrition support is helpful for keeping the balance of free amino acids in plasma for patients with cardiac valve replacement.

• 结论心瓣膜置换术后患者血浆中多种游离氨基酸水平明显降低，术后早期能全力肠内营养支持有助于维持这些患者血浆游离氨基酸谱的平衡。