近30年来技术的进步使血小板可以从全血分离后加以保存,并在转输后仍具有止血功能。随着血小板浓缩液制备及血小板转输技术的开展,血小板同种免疫反应(Alloimmuni_zation)或称同族免疫反应(Isoimmuniza~-tion)已引起临床工作者的重视。严重病例可以产生输血后血小板减少症,或称为输血后紫癜。这种综合征往往是在接受全血或血小板浓缩液输注后一周左右突然发生。原因是患者血清中产生了一种对抗血小板同族抗原的抗 In the last 30 years, advances in technology have allowed platelets to be preserved after whole blood separation and still have hemostatic function after transfusion. With the development of platelet concentrates preparation and platelet transfusion technology, alloimmunization of platelets or isoimmunization has drawn the attention of clinicians. Severe cases can produce post-transfusion thrombocytopenia, or purpura after transfusion. This syndrome often occurs suddenly about a week after receiving whole blood or platelet concentrate infusion. The reason is that there is an anti-platelet anti-family antigene in patients’ sera