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  • Author: Suree Nimitwongsin x
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Sodium glycerophosphate and prescribed calcium concentrations in pediatric parenteral nutrition: a retrospective observational study and economic evaluation

Abstract

Background

The risk of precipitation limits calcium and phosphate concentrations that can be administered parenterally to pediatric patients. As an alternative to dipotassium phosphate, sodium glycerophosphate (NaGlyP) is claimed to reduce the risk of precipitation in solutions for parenteral administration.

Objectives

To determine the calcium concentrations, NaGlyP, and dipotassium phosphate prescribed in pediatric parenteral nutrition orders and the cost–benefit of the organic phosphate.

Methods

We retrospectively collected cross-sectional data for parenteral nutrition orders from September 2014 to August 2015 for pediatric patients including neonates and children aged <18 years who were admitted to King Chulalongkorn Memorial Hospital, Bangkok, Thailand. Calcium concentration, calcium concentration adjustments, and costs of phosphate used per bag were analyzed.

Results

Of 2,192 parenteral nutrition orders, NaGlyP was used in 2,128 (97.1%) with calcium concentrations in the range of 0.84–139.91 mmol/L, which were significantly higher than calcium concentrations used with dipotassium phosphate (0.00–12.21 mmol/L, P < 0.001). There was no report of visible precipitation. Median costs of NaGlyP and dipotassium phosphate used per unit bag were not significantly different (35.88 and 41.25 Thai baht [THB] or 1.04 and 1.20 USD per bag, respectively, P>0.99; (1 USD equivalent to 34.241 THB U.S. Federal Reserve Bank G5.A annual average rate 2015).

Conclusions

Higher calcium concentrations could be achieved without increasing the direct cost per unit bag significantly as a result of using NaGlyP, an alternative to dipotassium phosphate as a source of phosphate for patients who require high amounts of calcium in parenteral nutrition.

Open access