Can someone please tell me if these calculations are correct!I'm reviewing my notes, and my professor said to always multiplythe lipids by 3 and then divide by 7 to get the total amount ofcals of lipids per day... I'm not completely sure why you do that?Can someone explain. Why don't you just stop at 700 cals forlipids?
1. Calculate the number of calories and grams proteinfor the following TPN solution:
D50W in 500cc
10% AA in 500cc
20% lipids in 350cc (given piggy back 3 times a week)
Flow rate: 75cc/h x 24h
The total number of calories is 2,190 kcals on Monday,Wednesday, and Friday (lipids) and 1,890 on the days with nolipids, and the total grams of protein is 90 grams.
Total Formula Volume: 75 ml/ hr x 24 hours = 1800 mL (1.8 L)
            Dextrose:500 mL x 1.8 L = 900 mL
            AA:500 mL x 1.8 L = 900 mL
Dex: 900 mL x 0.5 g/mL = 450 g x 3.4 kcal/g = 1,530 kcaldextrose
AA: 900 mL x .10 g/mL = 90 grams protein x 4kcal/g = 360 kcal protein
Lipids: 350 mL x 2 cal/mL = 700 kcal x 3 days = 2100 kcal / 7days = 300 kcals
Total kcals: 1,530 + 360 + 300 = 2,190kcals (MWF- 3 days with lipids)
                    2,190– 300 = 1,890 (calories for days withoutlipids)
