Hypertonic saline infusion for hyponatremia: Limitations of the Adrogué-Madias and other formulas
Document Type
Journal Article
Publication Date
2-10-2023
Journal
Kidney360
DOI
10.34067/KID.0000000000000075
Abstract
Hypertonic saline infusion is used to correct hyponatremia with severe symptoms. The selection of the volume of infused hypertonic saline (VInf) should address prevention of overcorrection or under correction. Several formulas computing this VInf have been proposed. The limitations common to these formulas consist of: (a) failure to include potential determinants of change in serum sodium concentration ([Na]) including exchanges between osmotically active and inactive sodium compartments, changes in hydrogen binding of body water to hydrophilic compounds, and genetic influences, and (b) inaccurate estimates of baseline body water entered in any formula and of gains or losses of water, sodium and potassium during treatment entered in formulas that account for such gains or losses. In addition, computing VInf from the Adrogué-Madias formula by a calculation assuming a linear relation between VInf and increase in [Na] is a source of errors because the relation between these two variables was proven to be curvilinear. However, these errors were shown to be negligible by a comparison of estimates of VInf by the Adrogué-Madias formula and by a formula using the same determinants of the change in [Na] and the curvilinear relation between this change and VInf. Regardless of the method used to correct hyponatremia, monitoring [Na] and changes in external balances of water, sodium, and potassium during treatment remains imperative.
APA Citation
Wagner, Brent; Malhotra, Deepak; Schmidt, Darren; Raj, Dominic S.; Khitan, Zeid J.; Shapiro, Joseph I.; and Tzamaloukas, Antonios H., "Hypertonic saline infusion for hyponatremia: Limitations of the Adrogué-Madias and other formulas" (2023). GW Authored Works. Paper 2420.
https://hsrc.himmelfarb.gwu.edu/gwhpubs/2420
Department
Medicine