Surgery General surgery 9e04c15f True about TPN A Carbohydrate forms about 40% of energy source B In abdominal injury early parenteral nutrition should be staed C Proteins forms 60% of energy source D Lipids form 20% of energy source High-Yield Explanation Calories from amino acid 20-25% lipids 20% dextrose 55-60% Abdominal injuries, we need not sta TPN unless we anticipate atleast 2 weeks of bowel rest.