Abstract
Several recent articles have examined the time-dependent effects of epoetin therapy and the variability of hemoglobin (HGb) levels and what epoetin does in hemodialysis patients. A recent preliminary report also found that HGG cycling was common among hemodialysis patients, with only 10% of patients remaining within their initial HGb range (less than 11 g/dl, 11 to 12.5 g/dl, greater than 12.5 g/dl) during a six-month period. Factors associated with HGb cycling were changes in epoetin dose, intravenous-iron administration or a change in dose and hospitalization. What is not known is whether there are adverse clinical outcomes associated with HGb variability, although preliminary data indicate, perhaps predictably, that a decreasing HGb level is associated with a higher mortality risk. This is certainly an area that merits further study.
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