• David Severs, Maarten B Rookmaaker, and Ewout J Hoorn.
• Department of Internal Medicine, Division of Nephrology & Transplantation, Erasmus Medical Center, Rotterdam, the Netherlands. Electronic address: d.severs@erasmusmc.nl.
• Am. J. Kidney Dis. 2015 Jul 1;66(1):147-53.

AbstractInfusion fluids are often given to restore blood pressure (volume resuscitation), but may also be administered to replace ongoing losses, match insensible losses, correct electrolyte or acid-base disorders, or provide glucose. The development of new infusion fluids has provided clinicians with a wide range of products. Although the choice for a certain infusion fluid is often driven more by habit than by careful consideration, we believe it is useful to approach infusion fluids as drugs and consider their pharmacokinetic and pharmacodynamic characteristics. This approach not only explains why infusion fluids may cause electrolyte and acid-base disturbances, but also why they may compromise kidney function or coagulation. In this teaching case, we present a 19-year-old patient in whom severe hypernatremia developed as a result of normal saline solution infusion and explore the pharmacokinetic and pharmacodynamic effects of frequently used infusion fluids. We review clinical evidence to guide the selection of the optimal infusion fluid.Copyright © 2015 National Kidney Foundation, Inc. Published by Elsevier Inc. All rights reserved.

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