[Long-term clinical experience in post-dilution HFR].
2004
PURPOSE: Hemodiafiltration reinfusion (HFR) is characterized by the use of regenerated ultrafiltrate as replacement fluid. We devised a new technique, post-dilution HFR, aimed at increasing the purification efficiency, treatment tolerability and at reducing inflammatory state. METHODS: We performed post-dilution HFR in six uremic patients during 18 months. Dialytic efficacy, filter blood rest and cytokine behavior were evaluated. RESULTS: Neither pyrogenic reactions nor other adverse phenomena were recorded. The tolerance to the treatment was excellent. We observed a high rate of urea extraction and optimal Kt/V values, a high extraction of beta2 microglobulin (beta2-m) and a reduction in blood rest; in addition, interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-alpha) significantly decreased. CONCLUSIONS. The inversion of the standard HFR configuration allowed us to improve the removal of both urea and beta2-m, and the blood rest, with an optimal tolerability. Moreover, the reduction in cytokine levels could attenuate the uremic microinflammatory state.
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