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  • Title: Outcome of individualized dialysate sodium concentration for hemodialysis patients.
    Author: Elshahawy Y, Sany D, Shawky S.
    Journal: Saudi J Kidney Dis Transpl; 2013 May; 24(3):507-13. PubMed ID: 23640622.
    Abstract:
    To evaluate the individualization of dialysate sodium (Na + ) concentration in hemodialysis (HD), we studied 40 stable chronic HD patients in a single-blind crossover design. They underwent 36 consecutive HD sessions with the dialysate Na + concentration set at 138 mmol/L, followed by 36 sessions of dialysate Na + set to match the patients average pre-HD plasma Na + levels. We multiplied the midweek pre-HD measured Na + by the Donnan coefficient of 0.95 (individualized Na + ). Pre-HD Na + dialysis sodium levels were nearly constant, with no variation between the two phases and a mean of 137.45 ± 2.04 mmol/L. Post-HD serum Na + was significantly higher during the standard phase (139.7 ± 2 mmol/L) than during the individualized phase (137.1 ± 1.6 mmol/L). Also, interdialytic weight gain (IDWG) was significantly more reduced during the individualized phase (3.25 ± 0.56%) than during the standard phase (3.94 ± 0.92%), P <0.001. Episodes of distressing symptoms including headache, muscle cramps and hypotension were significantly less frequent in the individualized phase. The mean of the pre-HD and post-HD systolic and diastolic blood pressures significantly decreased during the individualized phase, and we could reduce the doses of antihypertensive drugs in 10 (33.33%) patients. Individualized dialysate Na + concentration was associated with a decrease in IDWG and dialysis hypotension and related symptoms and better BP control in stable chronic HD patients.
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