Maintenance Fluid Rate (Holliday-Segar)
Weight-based maintenance IV fluid rate (4-2-1 rule).
⚠ Drug dosing safety notice: Dosing calculations are a decision-support aid only. Always independently verify the dose, concentration, route, and rate against current prescribing information, an institutional pharmacist, and the patient's renal/hepatic function before administration.
RESULT
Maintenance Fluid Rate (Holliday-Segar)
What is Maintenance Fluid Rate (Holliday-Segar)?
Weight-based maintenance IV fluid rate (4-2-1 rule). Maintenance Fluid Rate is intended for use in: Adults.
How to Use the Maintenance Fluid Rate Calculator
- Enter Weight in kg.
- Click Calculate to see your result and interpretation.
Formula & Version
This calculator uses formula version 1.0, last reviewed September 2026.
Clinical Considerations & Limitations
- Provides baseline maintenance needs only — does not account for ongoing losses, fever, dehydration deficit, or fluid restriction in conditions like heart/renal failure.
References
- Holliday MA, Segar WE, Pediatrics 1957;19:823-832
Frequently Asked Questions
What is Maintenance Fluid Rate (Holliday-Segar)?
Weight-based maintenance IV fluid rate (4-2-1 rule).
Who is Maintenance Fluid Rate intended for?
Adults. Always confirm applicability to your specific patient before use.
What are the limitations of Maintenance Fluid Rate?
Provides baseline maintenance needs only — does not account for ongoing losses, fever, dehydration deficit, or fluid restriction in conditions like heart/renal failure.
What formula or reference does Maintenance Fluid Rate use?
Holliday MA, Segar WE, Pediatrics 1957;19:823-832
Is Maintenance Fluid Rate a diagnosis?
No. Maintenance Fluid Rate produces a score or estimate to support clinical decision-making — it is not a diagnosis and should be interpreted alongside full clinical judgement.
Medical Disclaimer: Medical calculators are provided for informational and educational purposes only. Results should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always verify results with a qualified healthcare professional. Dosing calculations are a decision-support aid only. Always independently verify the dose, concentration, route, and rate against current prescribing information, an institutional pharmacist, and the patient's renal/hepatic function before administration.
