Effect of climatic temperature on fluid gain in hemodialysis patients with different degrees of overhydration.
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.


METHODS
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.


CONCLUSIONS
A cold weather-induced increase in fluid accumulation occurs in only those patients with less hypervolemia during the hot season.
Hwang
Jyh-Chang
JC
Division of Nephrology, Chi Mei Medical Center, Tainan, Taiwan. alfonjch@seed.net.tw
Wang
Charn-Ting
CT
Chien
Chih-Chiang
CC
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002980:Climate; D003920:Diabetes Mellitus / Q000628:therapy; D005260:Female; D015312:Hemodialysis Solutions / Q000737:chemistry; D006801:Humans; D008297:Male; D008875:Middle Aged; D006435:Renal Dialysis / Q000009:adverse effects*; D012621:Seasons; D013624:Taiwan; D013696:Temperature; D014883:Water-Electrolyte Imbalance / Q000209:etiology*; D014887:Weather
D015312:Hemodialysis Solutions