General

Adjusted Body Weight (AjBW)

Name: Adjusted Body Weight (AjBW) | StudyPrometric Tools
Keywords: adjusted body weight, ajbw, dosing, obesity, pharmacokinetics

Calculates Adjusted Body Weight for drug dosing in obese patients.

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Parameters

Adjusted Body Weight (AjBW) Result

FormulaAjBW = IBW + 0.4 × (Actual Body Weight - IBW)

Clinical Pearls

Many hydrophilic drugs (like aminoglycosides) do not distribute well into adipose tissue. Using actual body weight in obese patients leads to overdosing, while using ideal body weight leads to underdosing. AjBW provides a compromise.