What Is the Importance of Blood Type for a Blood Transfusion?

The principle of blood transfusion is transfusion. For example: under normal circumstances, people with type A lose blood type A, people with type B lose blood type B.

Blood transfusion principle

The principle of blood transfusion is transfusion. For example: under normal circumstances, people with type A lose blood type A, people with type B lose blood type B.

In an emergency, people of AB blood type can accept any blood type, and blood of type O can be transfused to anyone of any blood type.

Although the blood serum of AB blood group does not contain anti-A anti-B antibodies, the red blood cells contain AB. Antigen. If transfused with other blood types, it will also cause certain

The principle of blood transfusion is transfusion. For example: under normal circumstances, people with type A lose blood type A, people with type B lose blood type B.

In an emergency, people with AB blood type may need more blood than other blood types if they need blood transfusion. But AB blood type is not

In the ABO blood group system, the blood is divided into 4 types according to the type of agglutinin contained in the red blood cell membrane. The type that contains only A agglutinogen is called type A. The type that contains only B agglutinogen is called type B. It also contains A and B agglutinogen The type is called AB, and type O blood has neither A agglutinogen nor B agglutinogen. In addition to different agglutinogens, different blood types also contain lectins that are different from the agglutinogens, such as: blood type A contains only anti-B lectin, blood type B contains only anti-A lectin, and blood type AB There is no anti-A, anti-B lectin, and blood type O contains both anti-A and anti-B lectins. As a result, it is guaranteed that the infusion between the same blood types will not cause a hemolytic response. When infusion between different blood types, the corresponding hemolytic response will be caused. For example, type A blood contains A agglutinogen and anti-B Lectin, type B blood contains B agglutinogen and anti-A lectin. When type B blood is transfused into type A blood, A agglutinin reacts with anti-A agglutinin, and B agglutinin and anti-B agglutinin will occur. Strong hemolytic reaction, severe cases will cause death.

Why can only transfusion be performed if the blood types match? Because when containing A (or B)

Blood transfusion is one of the important life-saving measures. Clinically, blood transfusion is generally performed by intravenous injection. During the blood transfusion, it is necessary to select the appropriate blood transfusion method according to the specific situation of the patient. For example, for transfusion of patients with large-scale burns, it is best to inject plasma, because this patient loses mainly plasma. If whole blood is input, the concentration of red blood cells in the body may be too high, increasing blood viscosity and affecting blood circulation. For transfusion of patients with severe anemia, it is best to enter a concentrated red blood cell suspension, because such patients mainly have too few red blood cells or low hemoglobin concentration, but the total blood volume does not decrease. Patients with certain bleeding disorders need to receive a concentrated platelet suspension or plasma containing coagulation substances to enhance platelet aggregation and blood clotting, and to promote hemostasis. The above-mentioned blood transfusion method for inputting only necessary blood components to patients is called component blood transfusion. Component transfusion can improve blood utilization and efficacy, and because it does not import unnecessary components for patients, it does not increase the burden on the heart. Based on the above principles, the number of patients transfused with whole blood has gradually decreased in recent years, and the number of patients required for blood transfusion has gradually increased.