Arpadi et al reported an equation for estimating total body water for an HIV-infected pediatric patient using bioelectrical impedance analysis. The authors are from St. Luke's Roosevelt Hospital Center and Columbia University.
Patient selection: age 4 to 11 years old, HIV-positive
Parameters:
(1) height in cm
(2) resistance in ohms
total body water in liters =
= EXP(X)
X =
= (0.05 * ((height)^2) / (resistance)) + 1.65
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