Accessible plasma exchange using membrane filter - a successfully treated case of TTP with repeated plasma exchanges

Area of Science:

• Nephrology
• Hematology
• Immunology

Background:

• Plasma exchange is a therapeutic apheresis technique used to remove harmful substances from the blood.
• Hollow-fiber membrane technology offers a potentially efficient method for plasma separation.

Observation:

• Plasma exchanges were performed using a hollow-fiber plasma filter in patients with diverse medical conditions.
• The procedure involved removing approximately 2 liters of plasma and replacing it with fresh frozen plasma over 1.5 to 2 hours.
• The process demonstrated a significant replacement of patient albumin, reaching up to 66% in one instance.

Findings:

• Fifty-four plasma exchange procedures were safely conducted on seven patients with minimal adverse effects like muscle cramps or itching.
• The hollow-fiber plasma filter system was easily assembled and managed by dialysis personnel.
• A successful treatment of thrombotic thrombocytopenic purpura (TTP) using this method combined with conventional therapy was documented.

Implications:

• Hollow-fiber plasma exchange is a viable and safe therapeutic option for various hematological and immunological disorders.
• This apheresis technique can effectively manage conditions like TTP and facilitate albumin replacement.
• Further research into membrane plasma exchange could optimize treatment protocols for a wider range of diseases.