Quickly determine daily and hourly IV maintenance fluid requirements for patients of all ages. Our Maintenance Fluids Calculator utilizes the Holliday-Segar formula, a widely accepted method for estimating fluid needs based on body weight, ensuring accurate and safe patient care. Ideal for healthcare professionals, nurses, and medical students.
Formula:
The Maintenance Fluids Calculator primarily uses the Holliday-Segar formula, which estimates fluid requirements based on body weight:
- For the first 10 kg of body weight: 100 mL/kg/day
- For the next 10 kg (11-20 kg total): 50 mL/kg/day
- For every kg above 20 kg: 20 mL/kg/day (with a practical cap for adults)
Variables:
- Weight (kg): Patient's body weight in kilograms.
Example: A 25 kg child would need:
- 10 kg * 100 mL/kg = 1000 mL
- 10 kg * 50 mL/kg = 500 mL
- 5 kg * 20 mL/kg = 100 mL
- Total = 1000 + 500 + 100 = 1600 mL/day