Final answer:
The risks of total parenteral nutrition (TPN) include elevated blood sugar, infection at the catheter site, and volume overload.
Step-by-step explanation:
The risks of total parenteral nutrition (TPN) include elevated blood sugar, infection at the catheter site, and volume overload. Elevated blood sugar can occur because TPN solutions contain glucose, which can lead to hyperglycemia. Infection at the catheter site is a concern because venous catheters are common sites of bloodstream infections. Volume overload can happen if too much fluid is infused through the catheter, leading to systemic edema.