💉TPN vs PPN TPN, also known as total parenteral nutrition, is given through a central line and provides total long-term nutrition without using the GI tract. PPN, also known as peripheral parenteral nutrition, is given through a peripheral IV and provides either supplemental or short term nutrition without using the GI tract. What’s another meaning for PPN that is also correct? Put your answer in the comments! #IVnutrition #parenteralnutrition #NurseintheMaking #NCLEXPrep #clinicalsbound #nursi