A physician orders parenteral nutrition (PN) for a critically ill client. The client's PN is administered through a central line because PN is:

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PN is hypertonic, meaning it has a higher osmolarity than the client's own body fluids. Administering PN through a central line allows for large volumes of fluid to be infused quickly, which could cause significant damage to smaller peripheral veins if administered through them.

A Physician Orders Parenteral Nutrition (PN) for a Critically Ill