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      Calc Function

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    • Subcategory of 'Diagnosis' designed to be very sensitiveRule Out
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    Patent Pending

    Maintenance Fluids Calculations

    Calculates maintenance fluid requirements by weight.


    While originally derived in pediatric patients, this calculator is applicable to any age. Consider using ideal body weight in obese patients. If not calculating based on ideal body weight, use clinical judgment for dosing. A 1-liter bolus may be appropriate for most patients, such as overweight adolescents and adults.

    When to Use
    Why Use
    • Determining IV fluid rates for patients who are not taking oral fluids (either from vomiting or being NPO).
    • Determining IV fluid requirements for patients who are dehydrated or have insensible losses or third spacing.

    Weight-based dosing of fluids is important given the fact that a patient's total body water (and blood volume) are based on their weight.



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    Next Steps
    Creator Insights
    Dr. Malcolm Holliday

    About the Creator

    Malcolm Holliday, MD, (d. 2014) was a pediatric nephrologist and physiologist. Dr. Holliday’s original work studying inherited tubular disorders and congenital renal defects eventually led him to become professor of pediatrics and chief of the Division of Pediatric Nephrology at University of California San Francisco, a position he held for over two and a half decades of his 60 year career.

    To view Dr. Malcolm Holliday's publications, visit PubMed

    Are you Dr. Malcolm Holliday? Send us a message to review your photo and bio, and find out how to submit Creator Insights!
    MDCalc loves calculator creators – researchers who, through intelligent and often complex methods, discover tools that describe scientific facts that can then be applied in practice. These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients.
    About the Creator
    Dr. Malcolm Holliday
    Are you Dr. Malcolm Holliday?