Impact of hemodialysis duration on the removal of uremic retention solutes

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Abstract

Several studies have stressed the importance of dialysis time in the removal of uremic retention solutes. To further investigate this, nine stable chronic hemodialysis patients were dialyzed for 4, 6, or 8 h processing the same total blood and dialysate volume by the Genius system and high-flux FX80 dialyzers. Inlet blood and outlet dialysate were analyzed for urea, creatinine, phosphorus, and β2-microglobulin at various times. Total solute removal, dialyzer extraction ratios, and total cleared volumes were significantly larger during prolonged dialysis for urea, creatinine, phosphorus, and β2-microglobulin. Reduction ratios increased progressively, except for phosphate and β2-microglobulin, where the ratios remained constant after 2 h. In contrast, no significant difference was found for the reduction ratios of all solutes and Kt/Vurea between the three different sessions. With longer dialyses, solutes are efficiently removed from the deeper compartments of the patient's body. Our study shows that care must be taken when using Kt/Vurea or reduction ratios as the only parameters to quantify dialysis adequacy. © 2008 International Society of Nephrology.

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APA

Eloot, S., Van Biesen, W., Dhondt, A., Van De Wynkele, H., Glorieux, G., Verdonck, P., & Vanholder, R. (2008). Impact of hemodialysis duration on the removal of uremic retention solutes. Kidney International, 73(6), 765–770. https://doi.org/10.1038/sj.ki.5002750

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