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Updated: Jul 9, 2026

Evaluation of Fluid Overload by Bioelectrical Impedance Vectorial Analysis
Published on: August 17, 2022
Effect of climatic temperature on fluid gain in hemodialysis patients with different degrees of overhydration
Jyh-Chang Hwang1, Charn-Ting Wang, Chih-Chiang Chien
1Division of Nephrology, Chi Mei Medical Center, Tainan, Taiwan. alfonjch@seed.net.tw
Background:
To assess the effect of seasonal temperature on the interdialytic body weight gain (deltaBW), %deltaBW/dry weight (DW), and pre-dialysis blood pressure in chronic hemodialysis (HD) patients with different degrees of overhydration.
Method:
Year 2005 was divided into two seasons: 'cold' (the coolest 5 months) and 'hot' (the hottest 5 months). A total of 221 end-stage renal disease patients treated with HD at our center throughout the year 2005 were enrolled.
Results:
DeltaBW showed a reversed trend to the water evaporation rate, which paralleled temperature change. Increases of deltaBW and %deltaBW/DW in cold weather were more significant in non-diabetes mellitus than diabetes mellitus. Only patients in the bottom two quartiles for %deltaBW/DW in hot weather (i.e., <5%) showed a cold weather-induced increase in %deltaBW/DW.
Conclusion:
A cold weather-induced increase in fluid accumulation occurs in only those patients with less hypervolemia during the hot season.
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