[Change of platelet count and P-selectin in preserved platelet concentrates].

To observe the change of quantity and quality of platelets preserved in a full-sealed bag, and explore the difference of platelets preserved in oscillating and static conditions at (22 +/- 2) degrees C, the platelet concentrates were prepared with a CS-3000-plus blood cell separator, the platelet counts were performed with automatic blood cell analyzer and P-selectin in supernatant of platelet concentrates was detected by ELISA. The results showed that both of platelet count and P-selectin content in the platelet concentrates had no significant difference between oscillating and static preservation condition. With prolongation of preserved time, the platelet count decreased and P-selectin content increased gradually in both preserved conditions. There was no difference in the platelet counts during 0 - 72 hours preservation in both conditions, and significant difference was seen in 96 - 120 hours preservation. It was concluded that the expired date for platelet product preserved in CS-3000-plus blood cell separator full-sealed system should be 3 days. Under the condition of (22 +/- 2) degrees C, the quality of the platelet preserved in oscillating state is not superior to static preservation.