[Nitrogen balances in very premature newborns in the course of parenteral nutrition (author's transl)].

Nitrogen balance studies were performed in the course of parenteral nutrition during the first 5 days of life in 2 groups of premature newborns (I. group: 7 prematures, b.w. M = 1295g; II. group: 7 prematures, b.w. M = 1447g). Glucose and fat emulsion were administered intravenously in children of the first group, in the second one L- Aminoacids (250 mg N/kg body weight/24 hrs.) were added. In comparison with the first group nitrogen retention of 77 to 170 mg/kg body weight/24 hrs. was reached, but blood urea concentration increased significantly.