Effect of Hemodialysis on the Red Blood Cell Life Span in Patients with End‐Stage Kidney Disease

The aim of this study was to use a CO breath test to investigate hemodialysis effects on red blood cell lifespan in patients with chronic kidney disease. A cohort of 17 non‐smoking men with end‐stage kidney disease undergoing hemodialysis via a polysulfone dialysis membrane (as opposed to a traditional cellulose acetate membrane) were subjected to a repeated Levitt's CO breath test to compare red blood cell lifespan before vs. after dialysis. None of the patients showed significant fluctuations in endogenous CO concentration during the dialysis procedure. The mean red blood cell lifespan was 66.0 ± 31.0 days before dialysis and 72.0 ± 26.0 days after dialysis, with no significant difference between the assessment time points (P > 0.05). In conclusion, dialysis using a polysulfone membrane did not appear to disrupt red blood cells or reduce their lifespan in patients with end‐stage kidney disease.

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