输血过敏反应在临床工作中比较多见,多数为轻度,严重反应仍然罕见。产生原因可能为受血者对血浆蛋白成份过敏。或供血者血浆内含抗原,受血者血浆内含相应抗体,抗原抗体产生过敏反应。或输入含有受血者敏感物质。或缺乏免疫球蛋白 IgA 患者接受输血,产生抗 IgA 抗体,此后再接受输血时产生过敏反应。或供血者的 Transfusion allergic reactions are more common in clinical work, most are mild, severe reactions are still rare. The cause may be caused by blood recipients of plasma protein components allergy. Or donor blood plasma containing antigens, blood plasma containing the corresponding antibodies, antigens, antibodies produce allergic reactions. Or enter the recipient containing blood sensitive substances. Or lack of immunoglobulin IgA patients receiving blood transfusions to produce anti-IgA antibodies, and then receiving an allergic reaction when blood transfusions. Or blood donor’s