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Calculator: Maintenance fluid calculation for children based on hourly fluid requirements


Calculator: Maintenance fluid calculation for children based on hourly fluid requirements

 
Input
 
Weight  

 
Results
 
Important: Inputs must be complete to perform calculation.

 
 
Fluid infusion rate   mL/hr
 

 
 

 
Notes
  • Fluid infusion rate is determined as follows:
    • Weight between 3.5 and 10 kg, hourly fluid requirement is 4 mL/kg per hour.
    • Weight >10 kg to 20 kg, hourly fluid requirement is 40 mL/hour for first 10 kg of body weight plus 2 mL/kg per hour for any increment of weight over 10 kg.
    • Weight >20 kg, hourly fluid requirement is 60 mL/hour for first 20 kg of body weight plus 1 mL/kg per hour for any increment of weight over 20 kg, to a maximum of 100 mL/hour (up to a maximum of 2400 mL daily).
  • This calculation does not apply to newborn infants (ie, from 0 to 28 days after full-term delivery).
  • To determine the composition of maintenance fluids, refer to UpToDate topics on intravenous fluid therapy in children.

 
Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

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