Study of membrane permeability in haemodialysis
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Abstract:
The efficiency of haemodialysis has been determined when a Watson-Marlow (Kiil) dialyser was used repetitively without changing the membranes. Dialysis efficiency was assessed from the clearance of creatinine and of urea from the patient's blood. No significant deterioration in dialysis could be detected in six dialyses through the same membrane. Leaving the dialyser unit for up to eight hours before washing it out after the completion of each dialysis did not appear to have any effect on dialysis efficiency.It was concluded that repetitive haemodialysis through the same membranes is possible, but careful monitoring of the patient to assess suitability for such treatment, and subsequently at each dialysis, is essential.
Insights
Repetitive hemodialysis using the same membranes is feasible, showing no significant decline in efficiency over six uses. Careful patient monitoring is crucial for suitability and ongoing assessment during treatment.
Area of Science:
- Nephrology
- Biomedical Engineering
Background:
- Hemodialysis is a vital treatment for kidney failure.
- Dialyzer membrane reuse is explored to reduce costs and waste.
Purpose of the Study:
- To evaluate the efficiency of repetitive hemodialysis using the same dialyzer membranes.
- To assess the impact of delayed cleaning on dialyzer performance.
Main Methods:
- Assessed hemodialysis efficiency by measuring creatinine and urea clearance.
- Used a Watson-Marlow (Kiil) dialyzer for multiple treatments without membrane replacement.
- Investigated the effect of leaving the dialyzer unit for up to eight hours before washing.
Main Results:
- No significant deterioration in dialysis efficiency was observed over six uses of the same membrane.
- Delayed dialyzer unit washing (up to eight hours) did not affect dialysis efficiency.
Conclusions:
- Repetitive hemodialysis with the same membranes is a viable option.
- Close patient monitoring is essential to determine suitability and ensure safety during repeated treatments.