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Topics | Critical Care | How is total parenteral nutrition (TPN) given? Total parenteral nutrition (TPN) is given through a vascular access device such as a Peripheral Intravenous line, Midline or most preferably a Central Line. The central line is the most common access for TPN administration.
Central lines are much different from standard IVs that are used to give medicine into a vein near the skinâs surface, usually for short periods of time. A central venous catheter can remain for weeks or months, and some patients receive treatment through the line several times a day. Central venous catheters are important in treating many conditions, particularly in intensive care units (ICUs).