Archives of Physical Medicine and Rehabilitation
Volume 84, Issue 6 , Pages 854-861 , June 2003

The use of bioelectric impedance analysis to measure fluid compartments in subjects with chronic paraplegia1

  • Andrea C Buchholz, RD, PhD(c)

      Affiliations

    • Department of Nutritional Sciences, University of Toronto, Toronto, ON Canada
    • The Research Institute, The Hospital for Sick Children, Toronto, ON, Canada
    • ,
  • Colleen F McGillivray, MD, FRCP(c)

      Affiliations

    • Department of Medicine, University of Toronto, Toronto, ON Canada
    • the Toronto Rehabilitation Institute, Toronto, ON, Canada
    • ,
  • Paul B Pencharz, MB, ChB, PhD, FRCP(c)

      Affiliations

    • Corresponding Author InformationReprint requests to Paul B. Pencharz, MB, ChB, PhD, FRCP(C), Rm 8263, Div of Gastroenterology and Nutrition, The Hospital for Sick Children, 555 University Ave, Toronto, ON M5G 1X8, Canada
    • Department of Nutritional Sciences, University of Toronto, Toronto, ON Canada
    • Department of Paediatrics, University of Toronto, Toronto, ON Canada
    • The Research Institute, The Hospital for Sick Children, Toronto, ON, Canada

  • Image Result

    % FM of all subjects. Men with paraplegia (P) had higher % FM than male controls (C) (26.8±7.3 vs 19.1±4.8, P<.0001), and women with paraplegia had higher % FM than female controls (37.1±8.6 vs 28.7±5

    % FM of all subjects. Men with paraplegia (P) had higher % FM than male controls (C) (26.8±7.3 vs 19.1±4.8, P<.0001), and women with paraplegia had higher % FM than female controls (37.1±8.6 vs 28.7±5.4, P<.0001). There was no group by sex interaction (F=.07, P=.7889).

  • Image Result
    Relationship between predicted and measured ECW in 60 control subjects (squares, solid trendline) and 30 subjects with paraplegia (triangles, dotted trendline). ECW was predicted by using the equation

    Relationship between predicted and measured ECW in 60 control subjects (squares, solid trendline) and 30 subjects with paraplegia (triangles, dotted trendline). ECW was predicted by using the equation: ECW (in L)=−.025+1.03sex+.187wt+.0041(ht2/Xc)−.033sex×wt. (A) r2 between predicted and measured ECW for controls was .75 (SEE=1.62L); r2 for subjects with paraplegia was .66 (SEE=2.38L) (both P<.0001). Slopes did not differ significantly (P=.4797). (B) Bland and Altman43 analysis in the group with paraplegia revealed no significant bias (r2=.04, P=.3276). Horizontal line represents mean difference between predicted and measured ECW (−.86±2.36L, P=.0606). Abbreviations: CBS, corrected bromide space.

  • Image Result
    Relationship between measured and predicted TBW in 61 control subjects (squares, solid trendline) and 31 subjects with paraplegia (triangles, dotted trendline). TBW was predicted by using equation 1:

    Relationship between measured and predicted TBW in 61 control subjects (squares, solid trendline) and 31 subjects with paraplegia (triangles, dotted trendline). TBW was predicted by using equation 1: TBW (in L)=2.11−0.1age+3.45sex+.34wt+.28(ht2/R)−.086sex×wt. (A) r2 between predicted and measured TBW for controls was .95 (SEE=1.86L); r2 for subjects with paraplegia was .91 (SEE=2.48L) (both P<.0001). Slopes differed significantly (P=.0041). (B) Bland and Altman43 analysis in the group with paraplegia revealed significant bias (r2=.15, P=.0356). Horizontal line represents mean difference between predicted and measured TBW (1.70±2.84L, P=.0026).

☆ Supported in part by the Ontario Neurotrauma Foundation (grant no. ONBO-00026).

PII: S0003-9993(02)04950-X

doi: 10.1016/S0003-9993(02)04950-X

Archives of Physical Medicine and Rehabilitation
Volume 84, Issue 6 , Pages 854-861 , June 2003

Article Tools

* Image Usage & Resolution