Electrolytes and Calcium & Phosphorus

 

Electrolytes, particularly sodium, potassium, chloride, calcium, phosphorus and magnesium should be ordered as per the guidelines found in the Parenteral Nutrition in Pediatric Patients: Electrolyte Guidelines in mEq/kg or mEq per total volume depending on the computer ordering pathway chosen.

Recommendations for Calcium & Phosphorus

  • Recommended Parenteral Calcium & Phosphorus Intake
Recommended Intake
Calcium
(mEq/kg)
Phosphorus
(mEq/kg)
Preterm, Term Infants
3.0 - 4.0
3.0 - 4.0
Older Children (10-40 kg)
1.0 - 3
1.0 - 3
Adolescents (>40 kg)
1.0 - 1.5
1.0 - 1.5
  • The optimal Calcium to Phosphorus ratio for preterm and term infants is 1.3 - 1.7:1 by weight, which is a 1 - 1.3:1 molar ratio.
  • The combined total of calcium and phosphate cannot exceed 5.2 mEq/100 ml using a standard amino acid preparation or 7.2 mEq/100 ml using TrophAmine.