Total parenteral nutrition
(TOH-tul puh-REN-teh-rul noo-TRIH-shun) A form of nutrition that is delivered into a vein. Total parenteral nutrition does not use the digestive system. It may be given to people who are unable to absorb nutrients through the intestinal tract because of vomiting that won't stop, severe diarrhea, or intestinal disease. It may also be given to those undergoing high-dose chemotherapy or radiation and bone marrow transplantation. It is possible to give all of the protein, calories, vitamins and minerals a person needs using total parenteral nutrition. Also called hyperalimentation, parenteral nutrition, and TPN.