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Comparison of five body-composition methods in peritoneal dialysis patients
S H Stall1, N S Ginsberg, M V DeVita
1Section of Nephrology, Sol Goldman Renal Therapy Center, Lenox Hill Hospital, New York, NY 10021, USA.
The American Journal of Clinical Nutrition
|August 1, 1996
Summary
Body-composition assessment methods are applicable to peritoneal dialysis patients. While techniques vary, they correlate well, offering reliable nutritional status evaluation for this population.
Area of Science:
- Nephrology
- Nutritional Science
- Body Composition Analysis
Background:
- Accurate body-composition assessment is crucial for evaluating nutritional status in peritoneal dialysis (PD) patients.
- Existing body-composition measurement methods require validation in the PD population.
Purpose of the Study:
- To assess the validity and applicability of five common body-composition methods in well-dialyzed peritoneal dialysis patients.
Main Methods:
- Compared bioelectrical impedance analysis, dual-energy X-ray absorptiometry, total-body potassium counting, and two anthropometric techniques.
- Studied 30 peritoneal dialysis patients matched with 29 healthy controls for key demographic and anthropometric variables.
Main Results:
- Significant differences in body composition estimates were found between methods and by sex (women showed higher fat percentage).
- Variability between methods was independent of patient condition (peritoneal dialysis vs. control).
- All techniques showed significant correlations with each other in both men and women.
Conclusions:
- Routine body-composition assessment techniques are readily applicable to stable peritoneal dialysis patients.
- Despite inter-method variability, these techniques provide correlated and useful data for nutritional status evaluation in PD patients.