Impact of diffusion, ultrafiltration, and posture on total body electrical resistance in patients on hemodialysis.

Journal of Applied Physiology
J M SchotmanHans de Boer

Abstract

Monitoring of hydration in patients on hemodialysis (HD) by currently available bioelectrical impedance analysis (BIA) methods is hampered by limited accuracy. This may be caused by changes in total body electrical resistance (TBER) that are induced by processes other than ultrafiltration (UF). To identify these sources of error, we examined the impact of UF, diffusion, and postural change (PC), separately. Extracellular TBER (TBERe) was measured by bioimpedance spectroscopy every 30 min in 23 patients on HD, for 2 h during diffusion-only (DO), followed by 2-h UF-only (UFO). The impact of PC from upright to semi-recumbent position was assessed by a 2-h TBERe measurement on the day after HD. TBERe increased by 23.5 ± 12.4 Ω (P < 0.001) during DO and by 40.0 ± 16.2 Ω (P < 0.001) during UFO. PC, evaluated on a separate day, was associated with an increase in TBERe of 27.6 ± 26.0 Ω (P < 0.001). TBERe changes during DO were mainly attributed to PC and to a lesser extent to electrolyte exchange. Extrapolation of the data to a conventional 4-h HD session indicates that about 32% of the total increase in TBERe is not related to UF. In conclusion, a significant part of the increase in TBER during HD is not related to UF but can be attri...Continue Reading

References

Mar 1, 1989·Medical & Biological Engineering & Computing·P M de VriesH Schneider
Jul 1, 1994·Journal of Applied Physiology·L W OrganS L Lozier
Sep 1, 1996·The American Journal of Clinical Nutrition·R F KushnerD A Schoeller
Mar 1, 1997·Medical & Biological Engineering & Computing·H ScharfetterH Hutten
May 7, 1998·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·W D EvansC Trudgett
Jun 6, 1998·Journal of Applied Physiology·J MatthieP Withers
Apr 24, 1999·Journal of the American Society of Nephrology : JASN·J Q Jaeger, R L Mehta
May 20, 2004·Kidney International·Biagio R Di IorioVincenzo Bellizzi
Sep 24, 2004·Clinical Nutrition : Official Journal of the European Society of Parenteral and Enteral Nutrition·Ursula G KyleUNKNOWN Composition of the ESPEN Working Group
Oct 11, 2005·Nutrition in Clinical Practice : Official Publication of the American Society for Parenteral and Enteral Nutrition·Andrea C BuchholzDale A Schoeller
Apr 1, 1991·Clinical Nutrition : Official Journal of the European Society of Parenteral and Enteral Nutrition·S A Jebb, M Elia
Jul 27, 2006·Physiological Measurement·Ulrich M MoisslNigel J Fuller
Jan 30, 2007·Hemodialysis International·Bernard Charra
May 3, 2008·Contributions to Nephrology·J RaimannN W Levin
Jun 8, 2011·ASAIO Journal : a Peer-reviewed Journal of the American Society for Artificial Internal Organs·Carlo BasileCarlo Lomonte

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