plasmapheresis(redirected from Plasma exchange)
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Related to Plasma exchange: plasma exchange therapy
, or hemapheresis
, any procedure in which blood is drawn from a donor or patient and a component (platelets, plasma, or white blood cells) is separated out, the remaining blood components being returned to the body.
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The withdrawal of blood from a donor to obtain plasma, its components, or the nonerythrocytic formed elements of blood, followed by the return of the erythrocytes to the donor.