What is the recommended intake of selenium for term infants receiving long-term total parenteral nutrition?

What is the recommended intake of selenium for term infants receiving long-term total parenteral nutrition?

• A. < 1 mcg/kg/day
• B. 2 mcg/kg/day
• C. 3-4 mcg/kg/day
• D. 5-6 mcg/kg/day

Answer: (B)

Selenium is needed in PN to support antioxidant enzymes like glutathione peroxidase, helping protect cells from oxidative damage. For term infants on long-term total parenteral nutrition, the amount that reliably maintains selenium status without risking toxicity is 2 mcg/kg/day. This dose provides enough selenium to support enzyme activity and immune function while staying within a safe range for prolonged use. Providing less than this increases the risk of deficiency, whereas higher doses (3–6 mcg/kg/day) are generally not necessary for term infants and could raise toxicity risk over time.

Selenium is needed in PN to support antioxidant enzymes like glutathione peroxidase, helping protect cells from oxidative damage. For term infants on long-term total parenteral nutrition, the amount that reliably maintains selenium status without risking toxicity is 2 mcg/kg/day. This dose provides enough selenium to support enzyme activity and immune function while staying within a safe range for prolonged use. Providing less than this increases the risk of deficiency, whereas higher doses (3–6 mcg/kg/day) are generally not necessary for term infants and could raise toxicity risk over time.