Which form of PN is typically administered via a peripheral vein?

• A. Central PN
• B. Peripheral PN
• C. Enteral feeding via NG
• D. PEJ feeding

Answer: (B)

Parenteral nutrition route depends on osmolarity and venous access. Peripheral PN uses lower osmolarity solutions delivered through a peripheral vein, since peripheral veins can be irritated by highly concentrated fluids. This makes it suitable for short-term or less calorically dense support when a central line isn’t needed. Central PN, on the other hand, is given through a central venous catheter and can handle highly concentrated formulas and larger volumes. Enteral feeding via NG or PEJ feeds are routes for delivering nutrients via the digestive tract, not via the venous system. Therefore, the form typically administered via a peripheral vein is peripheral PN.