What is the daily potassium maintenance for a preterm infant, term infant or child receiving parenteral nutrition?

What is the daily potassium maintenance for a preterm infant, term infant or child receiving parenteral nutrition?

• A. 2-4 mEq/kg
• B. 7-8 mEq/kg
• C. 0.8-1 mEq/kg
• D. 5-6 mEq/kg

Answer: (A)

Potassium maintenance in parenteral nutrition is given as a daily amount per kilogram of body weight, chosen to keep serum potassium within a normal range while accommodating age-related needs and renal function. For preterm infants, term infants, and children on PN, the typical maintenance range is 2-4 mEq/kg/day. This reflects the relatively high per‑kg needs in neonates due to rapid growth and losses, yet stays within a safe zone given immature or variable renal handling. Dosing is adjusted based on daily labs, urine output, acid-base status, and medications that shift potassium (like diuretics or insulin). Doses like 7-8 mEq/kg/day would risk hyperkalemia; 0.8-1 mEq/kg/day would likely lead to hypokalemia over time; 5-6 mEq/kg/day is higher than standard maintenance and would only be considered in specific, closely monitored scenarios.

Potassium maintenance in parenteral nutrition is given as a daily amount per kilogram of body weight, chosen to keep serum potassium within a normal range while accommodating age-related needs and renal function. For preterm infants, term infants, and children on PN, the typical maintenance range is 2-4 mEq/kg/day. This reflects the relatively high per‑kg needs in neonates due to rapid growth and losses, yet stays within a safe zone given immature or variable renal handling. Dosing is adjusted based on daily labs, urine output, acid-base status, and medications that shift potassium (like diuretics or insulin).

Doses like 7-8 mEq/kg/day would risk hyperkalemia; 0.8-1 mEq/kg/day would likely lead to hypokalemia over time; 5-6 mEq/kg/day is higher than standard maintenance and would only be considered in specific, closely monitored scenarios.