在临床输血实践中,输血前进行不规则抗体筛查可以有效减少因同种免疫性抗体而导致的输血不良反应,提高输血的安全性〔1〕。然而,当患者体内已经存在的抗体随着时间推移效价逐渐减弱或者消失时,不规则抗体筛查易造成漏检〔2〕,若患者输注了含有相应抗原的红细胞后则会导致红细胞输注无效甚至发生溶血反应。现就1例低效价抗-C致回忆性迟发型溶血反应的案例报告如下。1资料与方法1.1病例简介患者,女,74岁,4年前诊断为骨髓增生异常综 In clinical practice of blood transfusion, irregular antibody screening before transfusion can effectively reduce the transfusion adverse reactions caused by alloimmunity antibodies and improve the safety of blood transfusion [1]. However, screening for irregular antibodies can easily result in undetected seizures when the existing antibodies in the patient gradually diminish or disappear over time [2]. Patients who transfused erythrocytes containing the corresponding antigens could cause red cell loss Note invalid or even hemolytic reaction. Now on 1 case of low-cost anti-C-induced recurrent delayed hemolytic reaction case report is as follows. 1 Materials and Methods 1.1 Introduction to the Case Patients, female, 74 years old, 4 years ago diagnosed with myelodysplastic syndrome