title: Leukocytapheresis: evaluation of a new procedure for the blood cell separator Fresenius AS 104.
abstract: For granulocyte separation from peripheral blood with the Fresenius blood cell separator AS 104 a new procedure and a new tubing set were developed and evaluated. Separation is done in cycles of 400 ml of whole blood processed, with continuous blood flow of 50-55 ml/min, speed 750 rpm. HES-450 is added for sedimentation acceleration together with citrate, ratio 1:10. At the end of each cycle granulocytes were pumped out of the separation chamber into the collection container. After processing 13 cycles of 400 ml whole blood/HES-citrate-volume a total yield of 9.20 +/- 2.80 x 10(9) white cells were collected in volumes of 125 ml. 47 +/- 9% of the leukocytes collected were granulocytes, this corresponds to collection of 1.05 +/- 0.09 x 10(9) granulocytes per liter of processed blood. The efficacy of granulocyte collection is 22.5 +/- 5.6%, viability is more than 95%. With this procedure it is possible to collect granulocytes with the blood cell separator Fresenius AS 104 in therapeutical doses.
authors.affiliation: Institut für Transfusionsmedizin, Univ. Kliniken Münster.
authors.forename: N
authors.initials: N
authors.lastname: Müller
authors.forename: H
authors.initials: H
authors.lastname: Mitschulat
authors.forename: W
authors.initials: W
authors.lastname: Wortmann
mesh_terms: D016913:Blood Component Transfusion / Q000295:instrumentation; D002470:Cell Survival / Q000502:physiology; D006098:Granulocytes / Q000637:transplantation; D006801:Humans; D007937:Leukapheresis / Q000295:instrumentation*; D007958:Leukocyte Count; D008838:Microcomputers; D012984:Software