scholarly journals The method of calculating whole body water in hemodialysis patients

2007 ◽  
Vol 40 (5) ◽  
pp. 409-415
Author(s):  
Hideyo Ninomiya ◽  
Michihiro Takada ◽  
Nukio Toyoda ◽  
Yoshimasa Suetomo ◽  
Ryuichiro Mukai
1990 ◽  
Vol 7 (3) ◽  
pp. 163-169 ◽  
Author(s):  
Olle Ljungqvist ◽  
Gunilla Hedenborg ◽  
Stefan H Jacobson ◽  
Lars-Eric Lins ◽  
Kickan Samuelson ◽  
...  

2013 ◽  
Vol 46 (1) ◽  
pp. 91-97 ◽  
Author(s):  
Lidiane Silva Rodrigues Telini ◽  
Gabriela de Carvalho Beduschi ◽  
Jacqueline Costa Teixeira Caramori ◽  
João Henrique Castro ◽  
Luis Cuadrado Martin ◽  
...  

2000 ◽  
Vol 25 (6) ◽  
pp. 536-545 ◽  
Author(s):  
William A. Latzka ◽  
Michael N. Sawka

Hyperhydration or increasing body water content above normal (euhydration) level was thought to have some benefit during exercise heat-stress; however, attempts to overdrink have been minimized by a rapid diuretic response. The perception that hyperhydration might be beneficial for exercise performance and for thermoregulation arose from the adverse consequences of hypohydration. Many studies had examined the effects of hyperhydration on thermoregulation in the heat; however, most of them suffer from design problems that confound their results. The design problems included control conditions not representing euhydration but hypohydration, control conditions not adequately described, cold fluid ingestion that reduced core temperature, and/or changing heat acclimation status. Several investigators reported lower core temperatures during exercise after hyperhydration, while other studies do not. Some investigators reported higher sweating rates with hyperhydration, while other studies do not. Recent research that controlled for these confounding variables reported that hyperhydration (water or glycerol) did not alter core temperature, skin temperature, whole body sweating rate, local sweating rate, sweating threshold temperature, sweating sensitivity, or heart rate responces compared to euhydration trail. If euhydration is maintained during exercise-heat stress then hyperhydration appears to have no meaningful advantage. Key words: Hydration, fluid replacement, exercise heat-stress, total body water exercise


2002 ◽  
Vol 61 (6) ◽  
pp. 2250-2258 ◽  
Author(s):  
Paul W. Chamney ◽  
Matthias Krämer ◽  
Christiane Rode ◽  
Wolfgang Kleinekofort ◽  
Volker Wizemann

2004 ◽  
Vol 22 (Suppl. 1) ◽  
pp. S193
Author(s):  
Marcospaulo Milagres ◽  
Caciane Souza ◽  
Clarissa Carvalho ◽  
Claudio Amaral ◽  
Cynthia Soares ◽  
...  

2003 ◽  
Vol 64 (3) ◽  
pp. 1108-1119 ◽  
Author(s):  
John T. Daugirdas ◽  
Tom Greene ◽  
Thomas A. Depner ◽  
Cameron Chumlea ◽  
Michael J. Rocco ◽  
...  

2006 ◽  
Vol 100 (2) ◽  
pp. 717-724 ◽  
Author(s):  
F. Zhu ◽  
M. K. Kuhlmann ◽  
G. A. Kaysen ◽  
S. Sarkar ◽  
C. Kaitwatcharachai ◽  
...  

Discrepancies in body fluid estimates between segmental bioimpedance spectroscopy (SBIS) and gold-standard methods may be due to the use of a uniform value of tissue resistivity to compute extracellular fluid volume (ECV) and intracellular fluid volume (ICV). Discrepancies may also arise from the exclusion of fluid volumes of hands, feet, neck, and head from measurements due to electrode positions. The aim of this study was to define the specific resistivity of various body segments and to use those values for computation of ECV and ICV along with a correction for unmeasured fluid volumes. Twenty-nine maintenance hemodialysis patients (16 men) underwent body composition analysis including whole body MRI, whole body potassium (40K) content, deuterium, and sodium bromide dilution, and segmental and wrist-to-ankle bioimpedance spectroscopy, all performed on the same day before a hemodialysis. Segment-specific resistivity was determined from segmental fat-free mass (FFM; by MRI), hydration status of FFM (by deuterium and sodium bromide), tissue resistance (by SBIS), and segment length. Segmental FFM was higher and extracellular hydration of FFM was lower in men compared with women. Segment-specific resistivity values for arm, trunk, and leg all differed from the uniform resistivity used in traditional SBIS algorithms. Estimates for whole body ECV, ICV, and total body water from SBIS using segmental instead of uniform resistivity values and after adjustment for unmeasured fluid volumes of the body did not differ significantly from gold-standard measures. The uniform tissue resistivity values used in traditional SBIS algorithms result in underestimation of ECV, ICV, and total body water. Use of segmental resistivity values combined with adjustment for body volumes that are neglected by traditional SBIS technique significantly improves estimations of body fluid volume in hemodialysis patients.


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