Body Surface Area - Calculation

Calculation

Various calculations have been published to arrive at the BSA without direct measurement. In the following formulas, BSA is in m2, W is weight in kg, and H is height in cm.

The most widely used is the Du Bois formula:

A commonly used and simple one is the Mosteller formula:

{BSA }= \sqrt\frac{W \times H }{3600} = 0.016667 \times W^{0.5} \times H^{0.5}

Other formulas for BSA in m2 include:

Haycock
Gehan and George
Boyd 0.0003207 \times weight \mbox{(g)}^{(0.7285 - 0.0188 \log_{10}{weight \mathrm{ (g)}})} \times H^{0.3}
or equivalently 0.03330 \times W^{(0.6157 - 0.0188 \log_{10} {W})} \times H^{0.3}
Fujimoto
Takahira
Schlich (women)
(men)

Recently, a weight-based formula was validated in the pediatric age group that does not include a square root, making it easier to use. It is /.

Read more about this topic:  Body Surface Area

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