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Study to Assess Clearances and Bio-compatibility of ELISIO Dialyzer

2014-08-27 03:16:54 | BioPortfolio

Summary

Today, haemodialysis is a recognized standard treatment for patients with chronic kidney disease stage 5. During the haemodialysis treatment session, blood passes from the patient through the extracorporeal circuit and is then returned. The dialyzer represents the greatest surface are of the extracorporeal circuit, as dialysis treatment is essentially based on the removal of small molecular weight solutes down along a concentration gradient, and this depends upon surface area. The ELISIO-H dialyzer differs in design to our current standard dialyzer, the FX100, by having fibers of a greater internal diameter, which potentially allows more internal haemofiltration, leading to an improved clearance of larger molecular weight solutes. It is now thought that these so called "middle molecular weight" solutes are more important in contributing to the clinical condition termed azotaemia, rather than smaller solutes such as urea.

The investigators therefore wish to study the clearance of middle sized molecules between the different dialyzers.

Description

Stable chronic kidney dialysis patients, currently dialyzing on the main Royal Free hospital dialysis unit will be asked to participate in the study. It is aimed to recruit 15 patients currently dialysing using the Fresenius FX100 dialyzer, who have used Fresenius polysulphone membranes for > 3 months.

During a mid week dialysis session, dialysis adequacy will be assessed by on line clearance, and samples of both blood and dialysate taken to assess, both clearances and bio-compatibility.

Thereafter patients would be switched to dialyse using the ELISIOTM-H dialyzer, but continue with the same dialysis prescription, and after 3 months, measurements repeated

Assessments Primary Clearances : on-line Kt/V, dual pool Kt/V, phosphate, b2microglobulin, cystatin C Secondary Serum :isoprostane generation complement activation platelet activation - coagulation activation - thrombophilic markers - Other Anticoagulation requirements & clotted circuits erythropoietin requirements, phosphate control therapy CRP

Study Design

Allocation: Non-Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Chronic Kidney Disease

Intervention

ELISIO dialyzer

Location

Royal Free Hospital
London
United Kingdom
NW3 2QG

Status

Completed

Source

Royal Free Hampstead NHS Trust

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:16:54-0400

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Medical and Biotech [MESH] Definitions

Conditions in which the KIDNEYS perform below the normal level for more than three months. Chronic kidney insufficiency is classified by five stages according to the decline in GLOMERULAR FILTRATION RATE and the degree of kidney damage (as measured by the level of PROTEINURIA). The most severe form is the end-stage renal disease (CHRONIC KIDNEY FAILURE). (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002)

The end-stage of CHRONIC RENAL INSUFFICIENCY. It is characterized by the severe irreversible kidney damage (as measured by the level of PROTEINURIA) and the reduction in GLOMERULAR FILTRATION RATE to less than 15 ml per min (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002). These patients generally require HEMODIALYSIS or KIDNEY TRANSPLANTATION.

Decalcification of bone or abnormal bone development due to chronic KIDNEY DISEASES, in which 1,25-DIHYDROXYVITAMIN D3 synthesis by the kidneys is impaired, leading to reduced negative feedback on PARATHYROID HORMONE. The resulting SECONDARY HYPERPARATHYROIDISM eventually leads to bone disorders.

Abnormal enlargement or swelling of a KIDNEY due to dilation of the KIDNEY CALICES and the KIDNEY PELVIS. It is often associated with obstruction of the URETER or chronic kidney diseases that prevents normal drainage of urine into the URINARY BLADDER.

A severe irreversible decline in the ability of kidneys to remove wastes, concentrate URINE, and maintain ELECTROLYTE BALANCE; BLOOD PRESSURE; and CALCIUM metabolism. Renal failure, either acute (KIDNEY FAILURE, ACUTE) or chronic (KIDNEY FAILURE, CHRONIC), requires HEMODIALYSIS.

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