Paediatric Weight Adjustment Calculations
The Sydney Children’s Hospital Network Dosing for Overweight and Obese Patients has a pithy summary of common medication adjustments based on weight.
Ideal Body Weight (IBW) is reflective of lean body mass in children aged 2-20 Calculation = (50% BMI for age) x Ht[m]2
Total Body Weight (TBW) is reflective of actual body mass in children
Adjusted Body Weight (AjBW) is reflective of lean body mass plus a proportion of excess mass determined by a cofactor Calculation = IBW + [(cofactor) x (TBW-IBW)]
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