Johansson et al evaluated total body water in adult using age, height, weight and sex. The authors are from Sahlgrenska University Hospital in Goteborg, Sweden.
Patient selection: adult undergoing peritoneal dialysis
Parameters:
(1) height in centimeters
(2) body weight in kilograms
(3) sex
(4) age
total body water in liters for a male =
= (0.312 * (weight)) + (0.192 * (height)) - (0.078 * (age)) - 10.759
total body water in liters for a female =
= (0.214 * (weight)) + (0.294 * (height)) - (0.0004 * (age)) - 29.994
total body water in liters independent of sex =
= (0.274 * (weight)) + (0.372 * (height)) - (0.033 * (age)) - 42.879
Factors impacting accuracy of anthropometric equations for total body water in patients undergoing peritoneal dialysis:
(1) extremes of body weight (obese or very lean)
(2) hydration
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