Wells et al reported an equation for estimating the total body water of a pediatric patient. The authors are from the Institute of Child Health in London.
Patient selection: infants to 19 years of age
Parameters:
(1) weight in kilograms
(2) height in centimeters
(3) age in years
(4) gender (male 0, female 1)
LN(total body water) =
= (0.551 * LN(weight)) + (0.796 * LN(height)) + (0.008 * (age)) - (0.047 * (points for gender)) - 2.952
total body water in liters =
= EXP(LN(TBW))
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