Document Classification

Section Type: RESULTS

Text: These levels were maintained for 2 h after transfusion in both groups and then decreased similarly (26 % and 27 %) at 24 h. Agonist-induced platelet aggregation increased immediately after transfusion to 5 micrograms/ml collagen (0. 7 + / - 0. 4 to 11. 4 + / - 1. 0 ohms and 0. 1 + / - 0. 1 to 5. 2 + / - 1. 0 ohms), 10 micrograms/ml collagen, (1. 5 + / - 0. 7 to 18. 0 + / - 1. 9 ohms and 0. 6 + / - 0. 4 to 10. 0 + / - 1. 6 ohms) and ristocetin (0. 7 + / - 0. 4 to 10. 1 + / - 1. 7 and 0. 1 + / - 0. 7 to 6. 2 + / - 1. 0 ohms), in 1 - and 4-day, stored platelets, respectively and persisted unchanged in both groups for 2 h. Fresh platelets were hyperaggregable compared to 4-day stored platelets for collagen-induced (5 micrograms/ml and 10 micrograms/ml) aggregation.