Relationship between dialyser type and signs and symptoms

Area of Science:

• Nephrology
• Biomaterials Science
• Clinical Research

Background:

• Hemodialysis requires effective dialyzers to manage waste products and fluid balance.
• Patient-reported symptoms during hemodialysis can significantly impact quality of life.
• Dialyzer biocompatibility is crucial for minimizing adverse events and improving patient tolerance.

Purpose of the Study:

• To compare the intradialytic symptoms and signs associated with seven different dialyzers.
• To evaluate the biocompatibility of various dialyzers based on patient and staff reporting.
• To identify factors influencing symptom perception and reporting in hemodialysis patients.

Main Methods:

• A crossover study involving 37 patients across five centers in four countries.
• Standardized collection of clinical and technical data, including symptoms and dialyzer performance.
• Patient questionnaires and staff observations were used to assess intradialytic symptoms and signs.

Main Results:

• Dialyzers Duo-Flux and Filtral demonstrated the lowest incidence of bioincompatibility symptoms.
• Dialyzers G120 M and G10-3N were associated with the highest reported symptoms by staff and patients.
• Patient and staff perceptions of symptoms varied significantly, influenced by cultural and hemodynamic factors.
• Two hypersensitivity reactions occurred with cuprammonium cellulose dialyzers, linked to ethylene oxide-human serum albumin antibodies.

Conclusions:

• A hierarchy of dialyzer-related symptoms and signs was identified, correlating with laboratory biocompatibility findings.
• Individual perceptions, staff reactions, and recording efficiency complicate symptom reporting.
• Future studies should account for these variables when assessing dialyzer biocompatibility and structure-symptom relationships.