In this episode, listeners will learn about the intricacies of how the AAP guidelines came to be on maintenance intravenous fluids for pediatric patients. Get ready to learn about the 4-2-1 rule and breakdown some misconceptions about fluids based on adult data! 

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This episode was written by Dr. Tammy Yau and Dr. Lidia Park with content support from Dr. Alexis Toney, Dr. Lena van der List, and Dr. Su-Ting Li. Drs. Tammy and Lidia take full responsibility for any errors or misinformation. 

Key points: 

-Remember the 4-2-1 rule for calculating maintenance fluids in children 

-Use of hypotonic fluids is based on historical data in healthy children 

-Data now supports use of isotonic fluids like NS or LR to reduce risk of hyponatremia and SIADH 

-Newer data may support LR over NS 

Supplemental information 

AAP 2018 Maintenance Fluid Guidelines: https://publications.aap.org/pediatrics/article/142/6/e20183083/37529/Clinical-Practice-Guideline-Maintenance