[Clinical efficiency of transfusion of pathogen-inactivated platelet concentrates]

To evaluate the effect of pathogen-inactivated platelet concentrates (PIPC) on posttransfusion platelet increments, hemorrhagic syndrome relief, and transfusion intervals.

This prospective study included 29 hemoblastosis patients (13 women, 16 men), median age 38 years (20-66 years). Pathogens were inactivated by the photodynamic method using the Intecept system. Each patient received two PC transfusions: one PIPC transfusion and one control one. Posttransfusion platelet increments one hour and one day after PC transfusion, the course of hemorrhagic syndrome, and the time to next platelet transfusion were analyzed.

Pathogen inactivation with amotosalen and ultraviolet irradiation reduced posttransfusion platelet increments in recipients by 24% after one hour and by 29% after one day after PIPC transfusion versus control ones.

The clinical efficiency of transfusions of amotosalen-induced PIPC was comparable with that of untreated platelet concentrates. Despite a reduction in post-transfusion platelet increment with the use of PIPC, this caused no significant increase in the frequency of transfusions.