A TPN order calls for the amounts on the left to be made from the items on the right. The total volume is to be 250 mL. How much of each ingredient do you need to prepare this TPN?

Order What you have
Aminosyn 2.5% Aminosyn 8.5% 500 mL
Dextrose 7.5% Dextrose 50% 1000 mL
KCl 4 mEq KCl 2mEq/mL 10 ml
Ca Gluconate 2 mEq Ca Gluconate 4.4mEq/ml 25 mL
Ped MVI 5 mL Ped MVI 10 mL

What I really need is an explanation of the method because I'm having trouble determining the values.

Question

A TPN order calls for the amounts on the left to be made from the items on the right. The total volume is to be 250 mL. How much of each ingredient do you need to prepare this TPN?

Order                             What you have
Aminosyn 2.5%              Aminosyn 8.5% 500 mL
Dextrose 7.5%                Dextrose 50% 1000 mL
KCl 4 mEq                        KCl 2mEq/mL 10 ml
Ca Gluconate 2 mEq      Ca Gluconate 4.4mEq/ml 25 mL
Ped MVI 5 mL                   Ped MVI 10 mL


What I really need is an explanation of the method because I'm having trouble determining the values.