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Original Paper

Elimination of Large Uremic Toxins by a Dialyzer Specifically Designed for High-Volume Convective Therapies

Maduell F.a · Arias-Guillen M.a · Fontseré N.a · Ojeda R.a · Rico N.b · Vera M.a · Elena M.b · Bedini J.L.b · Wieneke P.c · Campistol J.M.a

Author affiliations

Departments of aNephrology and Renal Transplantation and bBiochemistry, Hospital Clínic Barcelona, Barcelona, Spain; cFresenius Medical Care Deutschland GmbH, Research and Development, Clinical Research, Bad Homburg, Germany

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Blood Purif 2014;37:125-130

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: September 27, 2013
Accepted: December 22, 2013
Published online: March 20, 2014
Issue release date: May 2014

Number of Print Pages: 6
Number of Figures: 1
Number of Tables: 4

ISSN: 0253-5068 (Print)
eISSN: 1421-9735 (Online)

For additional information: http://www.karger.com/BPU

Abstract

Background: Unlike conventional hemodialysis treatments, which rely almost solely on diffusion-related mechanisms for solute removal, hemodiafiltration (HDF) allows more efficient removal of higher molecular weight toxins due to convective transport mechanisms. To facilitate the removal of these toxins in HDF treatment modalities, dialyzers with highly efficient high-flux membranes are necessary. This study assessed the large uremic toxin removal ability of a high-flux dialyzer (FX CorDiax 60) specifically designed to facilitate convective therapies compared with a standard high-flux dialyzer (FX 60). Methods: In an open, randomized, cross-over, single-center, controlled, prospective clinical study, 30 adult chronic hemodialysis patients were treated by post-dilution online HDF with the FX 60 or the FX CorDiax 60 dialyzer. All other dialysis parameters were kept constant in both study arms. The reduction rate (RR) of blood urea nitrogen, phosphate, β2-microglobulin (β2-m), myoglobin, prolactin, α1-microglobulin, α1-acid glycoprotein, albumin and total protein as well as the elimination into dialysate was intraindividually compared for the two dialyzer types. Results: For FX CorDiax 60 versus FX 60, the RR was significantly higher for blood urea nitrogen (86.23 ± 4.14 vs. 84.89 ± 4.59%, p = 0.015), β2-m (84.67 ± 3.79 vs. 81.30 ± 4.82%, p < 0.0001), myoglobin (75.23 ± 10.48 vs. 58.60 ± 12.1%, p < 0.0001), prolactin (72.96 ± 9.68 vs. 56.91 ± 13.01%, p < 0.0001) and α1-microglobulin (20.89 ± 18.27 vs. 13.60 ± 12.50%, p = 0.016). There were no significant differences in the RR for phosphate, α1-acid glycoprotein, albumin and total protein. Mass removal was significantly higher with the FX CorDiax 60 than with the FX 60 for β2-m (0.26 ± 0.09 vs. 0.24 ± 0.09 g, p = 0.0006), myoglobin (1.83 ± 0.89 vs. 1.51 ± 0.76 mg, p = 0.0017), prolactin (0.17 ± 0.13 vs. 0.14 ± 0.08 mg, p = 0.02) and albumin (4.25 ± 3.49 vs. 3.01 ± 2.37 g, p = 0.03). Conclusions: This study demonstrates that treating patients with an FX CorDiax 60 instead of an FX 60 dialyzer in post-dilution HDF mode significantly increases the elimination of middle molecules.

© 2014 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: September 27, 2013
Accepted: December 22, 2013
Published online: March 20, 2014
Issue release date: May 2014

Number of Print Pages: 6
Number of Figures: 1
Number of Tables: 4

ISSN: 0253-5068 (Print)
eISSN: 1421-9735 (Online)

For additional information: http://www.karger.com/BPU


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Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
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