Background: Polymethyl methacrylate (PMMA) membranes are increasingly recognized for their effectiveness in treating acute kidney injury (AKI) due to their strong adsorption capabilities, particularly for inflammatory mediators like β2-microglobulin and IL-6. These membranes ensure mechanical stability and chemical inertness, minimizing adverse reactions during blood filtration. Summary: In acute conditions such as sepsis and acute respiratory distress syndrome (ARDS), PMMA membranes show promising findings. In sepsis, they may help reduce multiorgan failure by modulating immune responses, although further research is needed to confirm their routine use. For ARDS, PMMA membranes could mitigate “cytokine storms” by adsorbing key cytokines, improving oxygenation and hemodynamic stability, which may reduce ICU stays and reliance on mechanical ventilation. Monitoring biomarkers like IL-6, TNF-α is critical for tracking efficacy and tailoring therapy to individual needs. In chronic conditions, such as hemodialysis for chronic kidney disease, PMMA membranes help lower oxidative stress and β2-microglobulin levels, reducing complications such as amyloidosis. By decreasing oxidative damage, they provide long-term protective benefits for dialysis patients. Key Message: While these advantages are notable, large-scale studies are needed to establish PMMA’s efficacy, refine treatment protocols, and confirm its broader role in acute and chronic disease management. The potential of PMMA membranes highlights their value, but standardized clinical evidence is necessary for widespread adoption.

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