For children weighing over 20 kg, what is the rate for maintenance fluids?

The appropriate rate for maintenance fluids in children weighing over 20 kg follows the classic "100/50/20" rule. This guideline suggests that for the first 10 kg of body weight, the child requires 100 ml/kg/hr, for the next 10 kg (i.e., from 11 kg to 20 kg) it is 50 ml/kg/hr, and for each kilogram above 20 kg, 20 ml/kg/hr should be added.

For children weighing over 20 kg, maintenance fluid calculation is as follows:

• For the first 10 kg: 10 kg x 100 ml/kg/hr = 1000 ml/hr

• For the next 10 kg (from 11 kg to 20 kg): 10 kg x 50 ml/kg/hr = 500 ml/hr
• For weight over 20 kg (let's say the child weighs 25 kg for this example): 5 kg x 20 ml/kg/hr = 100 ml/hr

Adding those totals gives:

• 1000 ml/hr + 500 ml/hr + 100 ml/hr = 1600 ml/hr, which converts to an hourly rate of about 67 ml/hr for a 25 kg child, and thus the