Randomised Study of High-flux Haemodialysis and Haemodiafiltration

NCT ID: NCT01862679

Last Updated: 2016-06-07

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

100 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-07-31

Study Completion Date

2014-03-31

Brief Summary

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The most common forms of renal replacement therapy currently in use are high flux haemodialysis (HF-HD) and haemodiafiltration (HDF). Although these techniques appear similar to the patient, there are important differences in what happens to the blood as it travels through the dialysis machine.

During HDF, the machine controls hydrostatic pressure across the dialyser to remove additional water together with toxins from the blood and this fluid volume is continually replaced with an ultra-pure solution. HDF has a theoretical advantage removing more waste substances, especially larger molecules, from the blood than HF-HD which may be of benefit to the patient in the medium to long term.Despite the theoretical advantages, trials have so far been unable to find any significant difference in death rates or the development of health problems among patients on HDF or HF-HD.

It is therefore important to examine other factors which may help doctors and patients to decide which treatment to use. The investigators have designed a study which aims to answer three main questions:

1. Does HDF make patients feel better?
2. Is blood pressure more stable on HDF in comparison with HF-HD?
3. Are Phosphate levels and other blood parameters better controlled with HDF than HF-HD?

The investigators will do this by randomly assigning patients on HF-HD to receive 2 months of either HF-HD or HDF with as equivalent treatment prescriptions as possible and without the patient knowing which treatment they are receiving. After two months the patients will switch to the alternative form of dialysis for a further two months. During the study the investigators will ask the patients how long it took them to recover from the preceding session of dialysis, assess the frequency of symptomatic low blood pressure and also perform blood tests at set intervals to measure specific blood parameters.

Detailed Description

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Conditions

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End Stage Renal Disease

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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8 weeks HF haemodialysis / 8 weeks HD-filtration

8 weeks high-flux haemodialysis followed by 8 weeks haemodiafiltration

Group Type EXPERIMENTAL

High-flux haemodialysis

Intervention Type OTHER

High-flux haemodialysis is the standard dialysis modality currently in use in the UK

Haemodiafiltration

Intervention Type PROCEDURE

During Haemodiafiltration, the dialysis machine removes more water from the blood than during "normal" hemodialysis. The additional liquid is continually replaced with an ultra-pure solution. Thus, the machine exchanges a high volume of fluid during treatment and removes the liquid together with toxins from the blood.

8 weeks HD-filtration /8 weeks HF haemodialysis

8 weeks haemodiafiltration followed by 8 weeks high-flux haemodialysis

Group Type EXPERIMENTAL

High-flux haemodialysis

Intervention Type OTHER

High-flux haemodialysis is the standard dialysis modality currently in use in the UK

Haemodiafiltration

Intervention Type PROCEDURE

During Haemodiafiltration, the dialysis machine removes more water from the blood than during "normal" hemodialysis. The additional liquid is continually replaced with an ultra-pure solution. Thus, the machine exchanges a high volume of fluid during treatment and removes the liquid together with toxins from the blood.

Interventions

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High-flux haemodialysis

High-flux haemodialysis is the standard dialysis modality currently in use in the UK

Intervention Type OTHER

Haemodiafiltration

During Haemodiafiltration, the dialysis machine removes more water from the blood than during "normal" hemodialysis. The additional liquid is continually replaced with an ultra-pure solution. Thus, the machine exchanges a high volume of fluid during treatment and removes the liquid together with toxins from the blood.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Receiving HF-HD for at least 3 months
* Reliable vascular access (i.e. use of the same fistula, graft or tunnelled central venous catheter for at least 1 month)
* Aged 18 or older

Exclusion Criteria

* Currently receiving HDF
* Emergency hospital admissions within the preceding 4 weeks
* Life expectancy less than 6 months
* Neoplasia
* Unable to give informed consent
* Unable to perform QoL questionnaire or self report recovery post-dialysis time
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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NHS Greater Glasgow and Clyde

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Robert MacTier, Md, FRCP

Role: STUDY_DIRECTOR

NHS Greater Glasgow and Clyde

Locations

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NHS Greater Glasgow andClyde

Glasgow, , United Kingdom

Site Status

Countries

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United Kingdom

Other Identifiers

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GN12RE153

Identifier Type: -

Identifier Source: org_study_id

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