Membrane-based therapeutic plasma exchange (mTPE): Technical and clinical experience

Area of Science:

• Immunology
• Nephrology
• Hematology

Background:

• Therapeutic plasma exchange (TPE) is crucial for managing immune-mediated diseases by removing pathogenic substances.
• Centrifuge (cTPE) and membrane (mTPE) are primary plasma separation methods.
• Advances in filter technology are expanding the use of mTPE, yet clinical data remain limited.

Purpose of the Study:

• To evaluate the technical and clinical experience with membrane therapeutic plasma exchange (mTPE).
• To assess the safety and efficacy of mTPE in a large patient cohort.
• To identify key laboratory parameter changes during mTPE therapy.

Main Methods:

• Retrospective analysis of 998 inpatient mTPE treatments across 237 patients.
• Focus on a single tertiary care academic center.
• Documentation of treatment indications, complications, and laboratory values.

Main Results:

• Neurologic indications were most common.
• A low incidence of patient-reported complications was observed.
• Filter clotting occurred in 7.7% of treatments without anticoagulation.
• Significant changes noted in serum potassium, platelet count, and partial thromboplastin time.

Conclusions:

• Membrane therapeutic plasma exchange (mTPE) is a safe and efficient alternative to cTPE.
• An individualized approach to prescribing mTPE is recommended.
• Further research into mTPE protocols and outcomes is warranted.