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pheresis
phe·re·sis P0242280 (fə-rē′sĭs, fĕr′ə-)n. Informal Apheresis.pheresis (fəˈriːsɪs) n (Medicine) an informal name for apheresisThesaurus| Noun | 1. |  pheresis - a procedure in which blood is drawn and separated into its components by dialysis; some are retained and the rest are returned to the donor by transfusionapheresisdialysis - separation of substances in solution by means of their unequal diffusion through semipermeable membranesplasmapheresis - plasma is separated from whole blood and the rest is returned to the donorplateletpheresis - platelets are separated from whole blood and the rest is returned to the donor |
EncyclopediaSeeapheresispheresis
apheresis [af″ĕ-re´sis] any procedure in which blood is withdrawn from a donor, a portion (such as plasma, leukocytes, or platelets) is separated and retained, and the remainder is retransfused into the donor. Types include erythrocytapheresis, leukapheresis, lymphocytapheresis, plasmapheresis, and plateletpheresis.. Called also hemapheresis and pheresis.therapeutic apheresis separation of whole blood into its major components and removal of the abnormal, pathogenic component. Types include plasma exchange (plasmapheresis), removal of white blood cells (leukapheresis), removal of platelets (thrombocytapheresis), and removal of red blood cells erythrocytapheresis). The process is currently used as measure of last resort when conventional therapies are unsuccessful in controlling a chronic, debilitating, or potentially fatal disease. Its primary purpose is to modify the pathologic process so that other treatments can be more effective. It is not a cure. Plasmapheresis may be used in treatment of arthritis" >rheumatoid arthritis, myasthenia gravis, lupus erythematosus" >systemic lupus erythematosus, and some malignancies, in which plasma constituents can interfere with the function of the immune system. Other diseases for which therapeutic apheresis might be used include certain dyscrasias" >blood dyscrasias such as thrombocytosis, polycythemia vera, and sickle cell anemia.phe·re·sis (fe-rē'sis), See note at apheresis. Do not confuse this word with phoresis.A procedure in which blood is removed from a donor, separated, and a portion retained, the remainder is returned to the donor.
See also: leukapheresis, plateletapheresis, plasmapheresis. [G. aphairesis, a taking away, a withdrawal] pheresis (fə-rē′sĭs, fĕr′ə-)n. Informal Apheresis.apheresis The removal of whole blood from a patient or donor followed by separation into its components, some of which is discarded, with the rest being returned to the patient.
Therapeutic indications
• Leukocytes in hyperleukemic leukostasis with > 100 x 109/L blasts;
• Platelets in thrombocytosis with > 1000 x 109/L platelets, if symptomatic;
• Defective RBCs, replacing them with normal RBCs, as in sickle cell anaemia with crisis;
• Immunoglobulins causing hyperviscosity syndrome in macroglobulinaemia/myeloma;
• Autoantibody production in myasthenia gravis, Goodpasture syndrome, SLE, factor VIII antibodies; and
• Lipoproteins in patients with homozygous familial hypercholesterolaemia.pheresis See Cytapheresis, Plasmapheresis, Plateletpheresis. phe·re·sis (fĕ-rē'sis) A procedure in which blood is removed from a donor, separated, and a portion retained, with the remainder returned to the donor.
See also: leukapheresis, plateletpheresis, plasmapheresis[G. aphairesis, a taking away, a withdrawal]a·pher·e·sis , pheresis (ăfĕr-ēsis, fĕr-ēsis) Infusion of a patient's own blood from which elements (e.g., plasma, leukocytes, or platelets) have been removed. [G. aphairesis, withdrawal]pheresis
Related to pheresis: phoresisSynonyms for pheresisnoun a procedure in which blood is drawn and separated into its components by dialysisSynonymsRelated Words- dialysis
- plasmapheresis
- plateletpheresis
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