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apheresis
a·pher·e·sis A0362400 (ə-fĕr′ĭ-sĭs)n.1. Linguistics Variant of aphaeresis.2. aph·e·re·sis (ăf′ə-rē′sĭs) Medicine A procedure in which blood is drawn from a donor and separated into its components, some of which are retained, such as plasma or platelets, and the remainder returned by transfusion to the donor. Also called hemapheresis.apheresis (əˈfɪərɪsɪs) or aphaeresisn1. (Linguistics) the omission of a letter or syllable at the beginning of a word2. (Medicine) a method of collecting blood from donors that enables its different components, such as the platelets or plasma, to be separated out Also informally called: pheresis [C17: via Late Latin from Greek, from aphairein to remove] apheretic, aphaeretic adja•pher•e•sis or a•phaer•e•sis (əˈfɛr ə sɪs) n. the loss or omission of one or more letters or sounds at the beginning of a word, as in squire for esquire or count for account. [1605–15; < Late Latin aphaeresis < Greek aphaíresis removal] aph•e•ret•ic (ˌæf əˈrɛt ɪk) adj. ThesaurusNoun | 1. | apheresis - (linguistics) omission at the beginning of a word as in `coon' for `raccoon' or `till' for `until'aphaeresislinguistics - the scientific study of languagedeletion, omission - any process whereby sounds or words are left out of spoken words or phrases | | 2. | apheresis - 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 transfusionpheresisdialysis - 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 | TranslationsSee apheresis
apheresis
apheresis (əfĕr`əsĭs), or hemapheresis (hē'məfĕr`əsĭs), any procedure in which bloodblood, fluid pumped by the heart that circulates throughout the body via the arteries, veins, and capillaries (see circulatory system; heart). An adult male of average size normally has about 6 quarts (5.6 liters) of blood. ..... Click the link for more information. is drawn from a donor or patient and a component (platelets, plasmaplasma, in physics, fully ionized gas of low density, containing approximately equal numbers of positive and negative ions (see electron and ion). It is electrically conductive and is affected by magnetic fields. ..... Click the link for more information. , or white blood cells) is separated out, the remaining blood components being returned to the body. Apheresis allows the donor's blood volume to replenish itself much more quickly than whole blood donation. One type of apheresis, plasmapheresis, is commonly used in commercial blood banksblood bank, site or mobile unit for collecting, processing, typing, and storing whole blood, blood plasma and other blood constituents. Most hospitals maintain their own blood reserves, and the American Red Cross provides a nationwide collection and distribution service. ..... Click the link for more information. . In plasmapheresis the plasma (the liquid portion of the blood) is separated from donated blood, the red blood cells being returned to the donor. In some diseases, such as myasthenia gravismyasthenia gravis , chronic disorder of the muscles characterized by weakness and a tendency to tire easily. It is caused by an autoimmune attack on the acetylcholine receptor of the post synaptic neuromuscular junction. ..... Click the link for more information. , plasmapheresis is used to attempt to remove the disease-causing substances from the blood.apheresis
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.a·pher·e·sis (ā-fer-ē'sis), The widely used variant pheresis, which appears even in compound terms such as plateletpheresis, is a corruption of this word.Infusion of a patient's own blood from which certain cellular or fluid elements (for example, plasma, leukocytes, or platelets) have been removed. [G. aphairesis, withdrawal] apheresis (ə-fĕr′ĭ-sĭs)n.1. Linguistics Variant of aphaeresis.2. apheresis (ăf′ə-rē′sĭs) Medicine A procedure in which blood is drawn from a donor and separated into its components, some of which are retained, such as plasma or platelets, and the remainder returned by transfusion to the donor. Also called hemapheresis.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.a·pher·e·sis (ăfĕr-ēsis) Extraction of certain fluid or cellular elements from withdrawn blood, which is then reinfused into the donor or patient; performed therapeutically to remove harmful elements from the blood, and also to obtain immune globulins. [G. aphairesis, withdrawal]apheresis A separating out of a component, usually from the blood. See also PLASMAPHERESIS.ApheresisExtraction of a specific component from donated blood, with the remainder returned to the donor.Mentioned in: Blood Donation and Registrya·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]apheresis
Synonyms for apheresisnoun (linguistics) omission at the beginning of a word as in 'coon' for 'raccoon' or 'till' for 'until'SynonymsRelated Words- linguistics
- deletion
- omission
noun a procedure in which blood is drawn and separated into its components by dialysisSynonymsRelated Words- dialysis
- plasmapheresis
- plateletpheresis
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