A PN regimen that contains 1 L of D50W and 1 L of 7% Aminosyn provides how many non-pro kcals?

To determine the number of non-protein calories provided by the specified parenteral nutrition (PN) regimen, it's important to consider the caloric contributions from both the dextrose (D50W) and the amino acids (Aminosyn).

Starting with the D50W (50% dextrose in water), it contains 50 grams of dextrose per 100 mL. Therefore, in 1 liter (or 1000 mL) of D50W, there are 500 grams of dextrose. Since dextrose provides 4 calories per gram, this contributes:

500 grams × 4 calories/gram = 2000 calories.

Next, regarding the 1 liter of 7% Aminosyn, this solution contains 7 grams of amino acids per 100 mL, which totals 70 grams in 1 liter. However, amino acids provide calories primarily from protein, and depending on the calculation of calories derived from amino acids (which is 4 calories per gram), we see that:

70 grams × 4 calories/gram = 280 calories, which are counted as protein calories.

To find the total non-protein calories, you take the total calories from dextrose