title: Irradiated blood platelet concentrates stored for five days--evaluation by in vitro tests.
abstract: Platelet concentrates, irradiated with 15 Gy and stored for 5 days at room temperature under standardized conditions, were evaluated by in vitro tests and electron microscopy, in a paired study with nonirradiated platelets from the same concentrates, to investigate their usefulness for transfusion. The results showed no significant differences between the two groups in pH, pO2, pCO2, in vitro platelet aggregation, LDH, beta-thromboglobulin and thromboxane-B2. Examination by electron microscopy showed a higher degree of degranulation in the 5-day-old platelets but no certain difference between irradiated versus nonirradiated platelets. On the basis of satisfactory in vitro storage properties, platelet concentrates can be stored for 5 days in PL-1240 bags after irradiation. However, we recommend irradiation just before transfusion whenever possible.
authors.affiliation: Regional Center for Blood Transfusion and Clinical Immunology, Aalborg Hospital, Denmark.
authors.forename: G T
authors.initials: GT
authors.lastname: Espersen
authors.forename: E
authors.initials: E
authors.lastname: Ernst
authors.forename: O B
authors.initials: OB
authors.lastname: Christiansen
authors.forename: C
authors.initials: C
authors.lastname: Jersild
authors.forename: N
authors.initials: N
authors.lastname: Grunnet
mesh_terms: D001792:Blood Platelets / Q000528:radiation effects*; D001793:Blood Preservation; D006403:Hematologic Tests; D006801:Humans; D008854:Microscopy, Electron; D010974:Platelet Aggregation