IV fluids

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• Intravenous fluid therapy

📊 Maintenance Fluids (4-2-1 Rule) Calculator [show]

Maintenance Fluids (4-2-1 Rule)

Maintenance IV Fluids (4-2-1 Rule)

Parameter	Value
Patient Weight (kg)
Maintenance Rate
Hourly Rate	mL/hr
Daily Volume	mL/day

References
Holliday MA, Segar WE. The maintenance need for water in parenteral fluid therapy. Pediatrics. 1957;19(5):823-832. PMID 13431307. 4-2-1 Rule: 4 mL/kg/hr for first 10 kg + 2 mL/kg/hr for next 10 kg + 1 mL/kg/hr for each kg above 20 kg.