Water treatment for hemodialysis

Area of Science:

• Nephrology
• Infectious Diseases
• Biomedical Engineering

Background:

• Water treatment and dialyzer reprocessing are critical in hemodialysis.
• Nontuberculous mycobacteria resistance to germicides led to current safety standards.
• Dialyzer membrane integrity is vital for reprocessing safety.

Purpose of the Study:

• To emphasize the importance of water treatment and dialyzer reprocessing standards in hemodialysis.
• To highlight the role of product water quality in preventing hemodialysis complications.
• To discuss the pathogenesis of febrile reactions during hemodialysis.

Main Methods:

• Review of current safety microbiologic standards for dialyzer reprocessing.
• Emphasis on monitoring dialyzer membrane integrity.
• Ensuring product water meets Association for the Advancement of Medical Instrumentation (AAMI) standards.

Main Results:

• Adherence to AAMI standards for product water is necessary to reduce endotoxemia and chemical hazards.
• Monitoring dialyzer membrane integrity is as important as bacterial and endotoxin levels.
• Evidence suggests endotoxin fragment transmission across membranes induces cytokine production, causing febrile reactions.

Conclusions:

• Strict adherence to water treatment and dialyzer reprocessing standards is essential for patient safety in hemodialysis.
• Maintaining high-quality product water minimizes risks of endotoxemia and chemical exposure.
• Further understanding of febrile reaction pathogenesis is needed, but endotoxin transmission is a likely cause.