[Stability of amino acids and vitamins in total nutrient admixture]

We reported a formula of total nutrient admixture (TNA) used in our patients. During 24 hours of storage shaded from daylight at 4 degrees C and at room temperature (25 degrees C), the concentrations of 17 kinds of amino acids and vitamin A, E, B1, B2 in the TNA prepared in EVA plastic bag were not changed significantly. A patient who has been on this TNA for parenteral nutrition for more than 8.5 years is in a good nutritional status, with no clinical manifestations in difficiency of vitamins and proteins. 42 patients receiving this TNA on TPN for a period ranging from 31 to 93 days were improved significantly in their nutritional status.