<prompt> TPN is initiated in a 44-year-old woman with Crohns disease. In parenteral alimentation, carbohydrates should be provided in an optimal ratio of which of the following?1 kcalg nitrogen5 kcalg nitrogen10 kcalg nitrogen100 kcalg nitrogen  <response>: The baseline protein requirements are calculated as 1 gkgd. Following stress, there is an increased protein requirement, and protein intake should be 1.5 gkgd after surgery, 2 gkgd after polytrauma, and after sepsis. Glucose and amino acids must be infused simultaneously to appropriately utilize nitrogen. The ideal ratio is 100 nonprotein kcalg of nitrogen. In starvation, the nonprotein calorie- to-nitrogen ratio of 150 kcalg is adequate. 