The Effect of On-line Hemodiafiltratrion on Nutritional Status and Body Composition

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

33 participants

Study Classification

INTERVENTIONAL

Study Start Date

2012-04-01

Study Completion Date

2013-03-31

Brief Summary

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Compared to conventional hemodialysis (HD), on-line hemodiafiltration (OL-HDF) achieves a more efficient removal of uremic toxins and reduces inflammation, which could favourably affect nutritional status. The aim of this study was to evaluate the 1-year effect of OL-HDF on nutritional status and body composition in prevalent HD patients.

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Detailed Description

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Postdilution on-line hemodiafiltration (OL-HDF) is considered the most efficient renal replacement treatment modality. Compared with conventional hemodialysis (HD), OL-HDF enables a better removal of middle molecular weight uremic toxins by combining convective and diffusive clearance. Although higher convection volume exchange has been associated with an increased survival advantage for dialysis patients, the mechanisms by which OL-HDF may improve outcomes remain unknown.

On the basis of improved toxin removal, a potential benefit of OL-HDF on nutritional status has been postulated. However, evidence on the effect of OL-HDF on nutritional status is scarce and at times conflicting. Some observational and interventional studies have suggested that OL-HDF is associated with improved nutritional parameters; others have found no effect; and one study even reported negative effects of OL-HDF on nutritional status. The majority of these observations come from cohort studies, non-controlled interventions and/or secondary analysis of controlled trials. Further, there are currently no data examining the plausible effect of postdilution OL-HDF on body composition. To clarify this important knowledge gap, this prospective, controlled, study evaluated the effects of high volume postdilution OL-HDF on nutritional status and body composition in prevalent HD patients.

Conditions

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Chronic Kidney Disease Requiring Chronic Dialysis

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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High-flux hemodialysis

3 times per week

Group Type ACTIVE_COMPARATOR

High-flux hemodialysis

Intervention Type DEVICE

Hemodialysis treatment thrice weekly with the high-flux FX-100 dialyzer (Fresenius Medical Care, Bad Homburg, Germany; membrane: Helixone®; surface: 2.2 m2; UF coefficient: 73 ml/h mm Hg; ß2-microglobulin-sieving coefficient: 0.8; albumin-sieving coefficient: 0.001), including a minimum target dialysis dose (Kt/Vurea) ≥1.2 and a session length of 3.0 to 6.0 h. Hemodialysis treatments were performed with the 5008 hemodialysis system (Fresenius Medical Care).

On line-hemodiafiltration

3 times per week

Group Type EXPERIMENTAL

On line-hemodiafiltration

Intervention Type DEVICE

Post-dilution on line-hemodiafiltration treatment thrice weekly with the high-flux FX-100 dialyzer (Fresenius Medical Care, Bad Homburg, Germany; membrane: Helixone®; surface: 2.2 m2; UF coefficient: 73 ml/h mm Hg; ß2-microglobulin-sieving coefficient: 0.8; albumin-sieving coefficient: 0.001), including a minimum target dialysis dose (Kt/Vurea) ≥1.2 and a session length of 3.0 to 6.0 h. Post-dilution on line-hemodiafiltration treatments were performed with the 5008 hemodialysis system (Fresenius Medical Care), with automatic adjustment of the substitution fluid flow rate for maximising substitution volume while simultaneously avoiding haemoconcentration and filter clotting.

Interventions

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High-flux hemodialysis

Hemodialysis treatment thrice weekly with the high-flux FX-100 dialyzer (Fresenius Medical Care, Bad Homburg, Germany; membrane: Helixone®; surface: 2.2 m2; UF coefficient: 73 ml/h mm Hg; ß2-microglobulin-sieving coefficient: 0.8; albumin-sieving coefficient: 0.001), including a minimum target dialysis dose (Kt/Vurea) ≥1.2 and a session length of 3.0 to 6.0 h. Hemodialysis treatments were performed with the 5008 hemodialysis system (Fresenius Medical Care).

Intervention Type DEVICE

On line-hemodiafiltration

Post-dilution on line-hemodiafiltration treatment thrice weekly with the high-flux FX-100 dialyzer (Fresenius Medical Care, Bad Homburg, Germany; membrane: Helixone®; surface: 2.2 m2; UF coefficient: 73 ml/h mm Hg; ß2-microglobulin-sieving coefficient: 0.8; albumin-sieving coefficient: 0.001), including a minimum target dialysis dose (Kt/Vurea) ≥1.2 and a session length of 3.0 to 6.0 h. Post-dilution on line-hemodiafiltration treatments were performed with the 5008 hemodialysis system (Fresenius Medical Care), with automatic adjustment of the substitution fluid flow rate for maximising substitution volume while simultaneously avoiding haemoconcentration and filter clotting.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* being over 18 yr old; receiving stable high-flux hemodialysis treatment for at least 3 mo (Kt/Vurea ≥1.2 and hemodialysis performed 3.0 to 6.0 h, three times weekly), and agreed to give informed consent.