李先生怎么也想不通,他父亲因胃穿孔大出血而急诊住院,在手术时需进行输血治疗。因此他除在手术通知单上签字外还要在“输血治疗同意书”上签字,并被告知1)父亲失血太多必须输血,2)输血时可能被感染诸如乙型肝炎、丙型肝炎甚至艾滋病、梅毒等等传染病。如同意输血,就必须签字。李先生对输血签字很不理解。他认为既然是 Mr. Li couldn’t think of anything. His father was admitted to the hospital because he had severe hemorrhage in the stomach. He needed a blood transfusion at the time of surgery. Therefore, in addition to signing on the surgical notice, he signed the “transfusion therapy consent form” and was informed that 1) the father had lost too much blood and he had to transfusion; 2) he could be infected with blood transfusions such as hepatitis B, hepatitis C, or even AIDS, syphilis and other infectious diseases. If you agree to a blood transfusion, you must sign it. Mr. Li does not understand the blood transfusion signature. He thinks that since it is