Calculating Caloric Deficit in TPN

The registered nurse is preparing to administer Total Parenteral Nutrition (TPN) to a patient who has undergone gastrointestinal surgery and is unable to eat. TPN is a complex, nutrient-rich solution delivered intravenously that contains carbohydrates, proteins, fats, vitamins, and electrolytes. It is important for the nurse to ensure that the TPN formulation is properly calculated based on the patient’s specific nutritional needs.

If the prescribed TPN solution contains 2500 kcal per day and the patient’s daily caloric needs are estimated to be 3000 kcal, the nurse must determine the deficit of calories that will need to be addressed through supplemental nutrition. Fill in the blank: The caloric deficit the nurse needs to account for is ______ kcal.