Educational use only. Not a substitute for clinical judgment. Always verify independently.
Adult IV Maintenance Fluids
4-2-1 base rate plus fever, ongoing-loss, and fluid-restriction adjustments.
Weight
kg
Temperature
°C
Ongoing losses
mL/hr
GI, drains, third-space
Fluid restriction
Maintenance
110 mL/hr
2640 mL over 24 hours
Per 24 hr
2640
Base (4-2-1)110 mL/hr
Fever adjustment+0 mL/hr
Ongoing losses+0 mL/hr
Restriction multiplier× 1.00
Final rate110 mL/hr
Maintenance vs resuscitation
This is a maintenance estimate, not a resuscitation rate. For sepsis, hypovolemia, or other shock states, boluses (e.g., 30 mL/kg crystalloid in early sepsis per Surviving Sepsis) take priority and should be titrated to clinical and hemodynamic response, not a maintenance formula.
References
Updated 2026-04-28Report an error