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Parenteral nutrition


Parenteral nutrition (PN) is feeding a person intravenously, bypassing the usual process of eating and digestion. The person receives nutritional formulae that contain nutrients such as glucoseamino acidslipids and added vitamins and dietary minerals. It is called total parenteral nutrition (TPN) or total nutrient admixture (TNA) when no significant nutrition is obtained by other routes. It may be called peripheral parenteral nutrition (PPN) when administered through vein access in a limb, rather than through a central vein.