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Review: Clinical usefulness of ultrapure dialysate--recent evidence and perspectives
1Kidney and Dialysis Center, Yabuki Hospital, Yamagata, Japan. masakane@yabuki.yamagata.jp
Abstract:
It has generally been accepted that biological contamination of dialysate deteriorates the biocompatibility of dialysis therapy and accelerates dialysis-related complications such as dialysis-related amyloidosis (DRA) and malnutrition-inflammation-atherosclerosis (MIA) syndrome. During the past decade several studies have clarified that very slight amounts of contamination can lead to inflammatory response, and we could not confirm biological dialysate quality only by measuring endotoxin levels despite of measuring viable cell counts or biofilms. To achieve this, the European Renal Association/European Dialysis Transplantation Association and the American National Standardization Institute/Association for the Advancement of Medical Instrumentation published new standards for dialysate, in which very strict control levels were recommended with regard to viable bacterial cell counts. In 2004 JSDT raised the required standard of the levels of endotoxin, and began to develop a standard for bacterial cell counts. In Japan, many chronic kidney disease patients are treated with centralized dialysate supply systems which have weak spots in disinfecting the system. This causes some difficulties in making a standard for viable bacterial cell counts. In the present paper, we summarize evidences of clinical usefulness of ultrapure dialysate and perspectives of the standard for dialysate in Japan.
Insights
Biological contamination in dialysis fluid worsens patient outcomes. Ultrapure dialysate offers clinical benefits, but establishing bacterial cell count standards in Japan faces system challenges.
Area of Science:
- Nephrology
- Biotechnology
- Medical Technology
Background:
- Biological contamination of dialysis fluid is linked to complications like dialysis-related amyloidosis (DRA) and malnutrition-inflammation-atherosclerosis (MIA) syndrome.
- Inflammatory responses can be triggered by minimal contamination, and traditional methods like endotoxin levels, viable cell counts, or biofilm analysis are insufficient to guarantee dialysate quality.
- New international standards from ERA/EDTA and ANSI/AAMI emphasize strict control of viable bacterial cell counts in dialysate.
Purpose of the Study:
- To review the clinical benefits of ultrapure dialysate.
- To discuss the challenges and perspectives of establishing dialysate standards, specifically for bacterial cell counts, in Japan.
Main Methods:
- Review of existing evidence on the clinical utility of ultrapure dialysate.
- Analysis of current standards and challenges in implementing bacterial cell count monitoring for dialysate.
Main Results:
- Ultrapure dialysate demonstrates clinical usefulness in improving dialysis therapy and reducing complications.
- Japan's centralized dialysate supply systems present difficulties in standardizing viable bacterial cell counts due to disinfection weaknesses.
Conclusions:
- Ultrapure dialysate is clinically valuable for enhancing dialysis biocompatibility and mitigating complications.
- Developing robust standards for bacterial cell counts in dialysate is crucial, particularly in Japan, to ensure patient safety and optimize dialysis therapy.
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