Abstract
The administration of erythropoietin (EPO) in maintenance hemodialysis may affect urea kinetic parameters by altering dialyzer function during first use and reuse, and dietary protein intake as a consequence of increased appetite. In the present study, the effect of EPO treatment on urea kinetic parameters in case of reuse (n = 14) and first use (n = 10) of dialyzers was assessed in 24 clinically stable hemodialysis patients who were evaluated before and during EPO treatment. In addition, the heparin need and the number of uses before discarding the dialyzer were registered. No significant differences between urea kinetic parameters before compared with during EPO treatment were noted in the overall population or in the subgroups treated with reused or first-use dialyzers. However, in 13 patients with a low baseline protein catabolic rate (pcr(wt)) (pcr(wt) < 1.0 g/kg/24 hr before EPO treatment), pcr(wt) increased from 0.81 +/- 0.04 to 0.93 +/- 0.06 (+ 15%, P < 0.01). The heparin dosage increased from 6,693 +/- 419 IU/session to 7,659 +/- 566 IU/session and from 5,538 +/- 594 IU/session to 6,918 +/- 649 IU/session (P < 0.05) in the subgroups treated with reused or first-use dialyzers, respectively. Nevertheless, when dialyzer reprocessing was performed, the number of achieved uses before discarding the dialyzers was reduced after the introduction of EPO (5.4 +/- 0.4 v 3.4 +/- 0.4, P < 0.01). In conclusion, during EPO treatment urea kinetic parameters were not affected in case of dialyzer first use or in case of reuse. In patients with low pretreatment values, pcr(wt) increased, possibly indicating improved protein intake in malnourished patients.(ABSTRACT TRUNCATED AT 250 WORDS)
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More From: American journal of kidney diseases : the official journal of the National Kidney Foundation
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