Calcium Chloride and Calcium Gluconate in Neonatal Parenteral Nutrition Solutions with Added Cysteine: Compatibility Studies Using Laser Light Obscuration Methodology

JPEN. Journal of Parenteral and Enteral Nutrition
Robert K HustonKim N Stout

Abstract

Parenteral nutrition (PN) solutions containing calcium gluconate (CaGlu) and cysteine have elevated particle counts when analyzed using laser light obscuration (LO) as recommended by the United States Pharmacopeia (USP). There are no compatibility studies for solutions compounded with cysteine and containing calcium chloride (CaCl2 ) using LO. The purpose of this study was to conduct compatibility testing for neonatal PN solutions containing CaCl2 and CaGlu with cysteine. Solutions of amino acids (2.5%), containing either CaCl2 or CaGlu plus potassium phosphate, were compounded with 50 and 100 mg/dL cysteine. Solutions were analyzed for particle counts using LO. Maximum concentrations tested were 20 mmol/L calcium and 15 mmol/L phosphate. Three solutions containing CaCl2 (144 total solutions) and 2 containing CaGlu (96 total solutions) and the same concentration of additives were compounded. If the average particle count of replicates exceeded USP guidelines, the solution was incompatible. All solutions containing CaGlu had particle counts that exceeded USP guidelines for particle counts ≥10 μm (range, 86-580 particles/mL). For CaCl2 , 90 of 144 solutions were compatible (range of particle counts for all solutions, 3-121 partic...Continue Reading

References

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