Hemapheresis (cont.)
Melissa Conrad Stöppler, MD
Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.
William C. Shiel Jr., MD, FACP, FACR
Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.
In this Article
- What is apheresis?
- How is apheresis performed?
- What are some possible complications of apheresis?
- What diseases can be treated with apheresis?
- What are contraindications to apheresis?
How is apheresis performed?
All apheresis procedures involve connecting the blood in the patient/donor's veins through tubing to a machine that separates the blood components. The separation is done by either a centrifuge process or a filtration process on the blood in the machine. After the separation, the desired component of the blood is removed, while the remainder of the blood components are reinfused back into the patient. The entire procedure is painless and typically takes about two hours, or only slightly longer than a conventional blood donation.
What are some possible complications of apheresis?
Serious complications of donor apheresis are rare. Minor complications of donor apheresis can include bleeding at the donation site and feelings of lightheadedness that usually resolve quickly.
More serious complications can occur when apheresis is used to treat serious conditions and include:
- bleeding and a tendency to bleed (because clotting factors are removed),
- infection and a tendency toward infection (because the
immune system is
somewhat suppressed when antibodies are removed),
- low blood pressure (as fluids
are removed),
- muscle cramping (as low blood calcium can occur and other electrolytes can be imbalanced).
What diseases can be treated with apheresis?
When used in a therapeutic manner, the apheresis procedure is individualized regarding the frequency of treatments, the volume of blood or components to be removed, and the type of solution used for volume replacement.
The following list of conditions for which apheresis may be of benefit is not all-inclusive. Apheresis can be used in the treatment of:
- myasthenia gravis,
- Waldenstrom's macroglobulinemia,
- Goodpasture's syndrome,
- familial hypercholesterolemia,
- hyperviscosity syndrome (such as mixed
cryoglobulinemia,
thrombotic thrombocytopenic purpura),
- the HELLP syndrome of
pregnancy,
- clogging of blood vessels (leukostasis) cause by
severely elevated white blood count in
leukemia, and
- severely elevated platelet counts in leukemia or myeloproliferative disorders.
Apheresis can also be effective in certain cases of:
- systemic lupus with life-threatening complications,
- severe vasculitis,
- polymyositis or
dermatomyositis,
- severe rheumatoid arthritis,
- rapidly progressive glomerulonephritis,
- chronic autoimmune
polyneuropathy, and
- in cases of solid organ transplantation with a high risk of antibody-mediated rejection of the transplant.
http://www.medicinenet.com/hemapheresis/article.htm
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