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Clinical evaluation of an automated cleaning device for dialyzers
Abstract:
This paper describes the clinical evaluation of dialyzer efficiency after cleaning and sterilization using an automated dialyzer cleaner. In vivo clearance measurements of small molecules and an in vitro measurement of BSP showed no diminution after 5 uses, and ultrafiltration rate did not decrease with an increase in dialyzer use. Scanning and transmission electron microscopy of the membrane showed an increase in accumulation of cellular debris and fibrin with increasing use. Our experience using the automated dialyzer clearner for more than one year leads us to conclude that it is an effective way to clean dialyzers and that no patient ill-health occurs as a result of re-using dialyzers cleaned by this technique.
Insights
This study demonstrates that automated dialyzer cleaning effectively reuses dialyzers without impacting patient health or dialyzer efficiency. Dialyzers showed no decline in performance after multiple uses with this cleaning method.
Area of Science:
- Nephrology
- Biomedical Engineering
- Clinical Medicine
Background:
- Dialyzer reuse is a common practice to reduce healthcare costs.
- Effective cleaning and sterilization are crucial for safe dialyzer reuse.
- Automated systems may offer consistent and efficient dialyzer reprocessing.
Purpose of the Study:
- To clinically evaluate the efficiency and safety of dialyzers after cleaning and sterilization using an automated system.
- To assess the impact of repeated use on dialyzer performance and membrane integrity.
Main Methods:
- Clinical evaluation of dialyzer efficiency through in vivo clearance measurements of small molecules.
- In vitro measurement of BSP (Bromosulfophthalein) clearance.
- Assessment of ultrafiltration rate.
- Scanning and transmission electron microscopy (SEM/TEM) of dialyzer membranes.
Main Results:
- No diminution in in vivo small molecule clearance was observed after five uses.
- BSP clearance remained unchanged after five uses.
- Ultrafiltration rate did not decrease with increased dialyzer usage.
- SEM/TEM revealed an accumulation of cellular debris and fibrin on the membrane with repeated use.
Conclusions:
- The automated dialyzer cleaner is an effective method for reprocessing dialyzers.
- Dialyzer reuse following automated cleaning does not result in patient ill-health.
- The automated cleaning technique allows for safe and effective dialyzer reuse over multiple cycles.