Estimation of lean body mass in children

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Estimation of lean body mass in children A.M. Peters, H.L.R. Snelling, D.M. Glass, N.J. Bird British Journal of Anaesthesia Volume 106, Issue 5, Pages 719-723 (May 2011) DOI: 10.1093/bja/aer057 Copyright © 2011 The Author(s) Terms and Conditions

Fig 1 Dependence of measured ECV on eLBM in adults from centres 1 (left panels) and 3 (right panels). eLBM was estimated using Boer’s equations (upper panels) and James’ equations (lower panels). Results between the two centres are similar. The two sets of equations gave almost identical values. Note the linear and proportionate (regression lines pass close to origins) relationships between ECV and eLBM. British Journal of Anaesthesia 2011 106, 719-723DOI: (10.1093/bja/aer057) Copyright © 2011 The Author(s) Terms and Conditions

Fig 2 The Bland–Altman plot of measured ECV and eECV in children. Bias is not significantly different from zero. Dashed lines are mean (1.96 sd). There were only three patients with BMI>25 kg m−2, and these are shown as filled symbols. British Journal of Anaesthesia 2011 106, 719-723DOI: (10.1093/bja/aer057) Copyright © 2011 The Author(s) Terms and Conditions

Fig 3 (a) Relations between eLBM (kg) and weight (kg) in children, women, and men. The line is identity. (b) Relationships between eLBM (kg) and measured ECV (litre) in children (bold line: eLBM=3.50ECV+2.0; R2=0.857), women, and men. The regression line (fine line) is for all adults and is eLBM=2.82ECV+14.5 (R2=0.582). In both (a) and (b), eLBM was based on Boer’s equations in adults and equation (8) in children. British Journal of Anaesthesia 2011 106, 719-723DOI: (10.1093/bja/aer057) Copyright © 2011 The Author(s) Terms and Conditions

Fig 4 Relationships between eLBM/weight (y) and weight [x (kg)] in children (bold line: y=0.91–0.0024x; R2=0.241; P<0.001), women (lower fine line: y=0.95–0.0039x; R2=0.541) and men (upper fine line: y=1.03–0.0033x; R2=0.785). As in Figure 3, eLBM was based on Boer’s equations in adults and equation (8) in children. British Journal of Anaesthesia 2011 106, 719-723DOI: (10.1093/bja/aer057) Copyright © 2011 The Author(s) Terms and Conditions