Abstract

VEGA, Almudena et al. Study on overhydration in dialysis patients and its association with inflammation. Nefrología (Madr.) [online]. 2014, vol.34, n.5, pp.579-583. ISSN 1989-2284.  https://dx.doi.org/10.3265/Nefrologia.pre2014.Jun.12422.

Background: Patients with chronic kidney disease receiving haemodialysis (HD) have permanent variations in hydration status that may affect their survival. Objectives: To analyse hydration status and body composition in patients on haemodialysis and its relation to inflammation. Methods: We included 128 prevalent clinically stable patients on haemodialysis. We analysed body composition using spectroscopic bioimpedance and inflammation using blood parameters. Results: Patients with higher lean tissue had less intracellular (p=0.02) and extracellular water (p = 0.001). We did not find association with fat tissue and hydration. Mean overhydration was 7.5 %. We found an association between overhydration adjusted to extracellular water (OH/ECW) higher than 15 % similar to 10 %. They were both associated with low prealbumin levels (p = 0.001 and p = 0.05 respectively) and low levels of fat tissue (p = 0.001 and p = 0.05 respectively). Conclusions: Overhydration defined as OH/ECW higher than 10 % and 15 % are related to low prealbumin levels and low fat tissue. We suggest decreasing the overhydration limit measured by bioimpedance to OH/ECW higher than 10 %.

Keywords : Bioimpedance; Inflammation; Haemodialysis; Overhydration.

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