title: Influence of the red blood cell preparation method on the efficacy of a leukocyte reduction filter.
abstract: The performance of a leukocyte reduction bedside filter with different types of RBC concentrates was analyzed. Three types of RBCs were prepared: buffycoat-depleted RBCs suspended in saline-adenine-glucose-mannitol (SAGM)-additive solution (BC-RBCs; n = 20), RBCs suspended in SAGM-additive solution without buffy coat removal (SAGM-RBCs; n = 20), and RBCs drawn in CPDA-I conservative solution and processed for component preparation by the platelet-rich plasma method (CPDA-RBCs; n = 20). The units were filtered within 8 h of collection. One filter was used for every 2 units. High numbers of residual WBCs were found even in the units filtered first. Filtration of CPDA-RBCs resulted in a higher residual WBC content than SAGM-RBCs or BC-RBCs (p = 0.0032 and p = 0.0002, respectively). The filter performance strikingly decreased when the WBC load per filter exceeded 4 x 10(9) or the platelet load was less than 100 x 10(9). We conclude that filter performance varies with the WBC and platelet content of the RBC concentrates. Under the experimental conditions assayed in this study CPDA-RBCs are the least appropriate ones to be used for bedside leukocyte reduction.
authors.affiliation: Service of Hemotherapy and Hemostasis, Hospital Clínico, Barcelona, Spain.
authors.forename: I
authors.initials: I
authors.lastname: Alcorta
authors.forename: A
authors.initials: A
authors.lastname: Pereira
authors.forename: C
authors.initials: C
authors.lastname: Sanz
authors.forename: M J
authors.initials: MJ
authors.lastname: Terol
authors.forename: A
authors.initials: A
authors.lastname: Ordinas
mesh_terms: D001803:Blood Transfusion / Q000379:methods*; D004912:Erythrocytes; D005374:Filtration / Q000295:instrumentation; D006801:Humans; D007937:Leukapheresis / Q000295:instrumentation / Q000379:methods*