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  • Title: Variability in potassium removal by hemodialysis.
    Author: Sherman RA, Hwang ER, Bernholc AS, Eisinger RP.
    Journal: Am J Nephrol; 1986; 6(4):284-8. PubMed ID: 3777037.
    Abstract:
    The extent to which plasma potassium determines potassium removal in hemodialysis was examined in 8 end-stage renal disease patients during 51 treatments. Dialyzers, treatment time, blood and dialysate flow were held constant. Dialysate composition was also uniform except that 24 treatments utilized glucose-free dialysate and the remaining 27 a 200 mg/dl glucose bath. At either level of dialysate glucose, approximately 40% of the potassium removal during dialysis could not be accounted for by plasma-dialysate potassium gradient, body weight or serum carbon dioxide content, although glucose-free dialysate tended to increase potassium removal by a mean of 28%. The large, unexplained variability in potassium removal suggests that therapeutic manipulation of potassium flux across cell membranes may improve the management of potassium balance in hemodialyzed patients.
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