Pediatrics · Critical Care
Pediatric Maintenance IV Fluids (4-2-1 Rule) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Result
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Formula inputs
- Pmf421 Weight Kg (kg)Accepted range: 3 to 80
Primary source
Holliday MA, Segar WE. The maintenance need for water in parenteral fluid therapy. Pediatrics. DOI: 10.1542/peds.19.5.823. PMID: 13477247. Scope: Maintenance infusion rate (mL/h) = 4 mL/kg/h for first 10 kg + 2 mL/kg/h for next 10 kg + 1 mL/kg/h thereafter. (1957)
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