As the nurse hangs a bag of 3-in-1 total parenteral nutrition (TPN) for a client, a family member asks what is in the bag. The nurse explains a 3-in-1 TPN solution includes

  1. lipids, proteins, and amino acids.
  2. lipids, amino acids, and electrolytes.
  3. dextrose, amino acids, and lipids.
  4. dextrose, lipids, and electrolytes.
Number 3 is correct.
A 3-in-1 TPN solution includes dextrose, amino acids, and lipids. TPN also may be prepared as a 2-in-1 solution, which only includes dextrose and amino acids, with lipids administered separately.