Can blood type be same can you transfuse each other?
Wrong! Blood transfusion is a complex process. ABO blood group system have the closest relations with blood transfusion, but clinical before blood transfusion in addition to the identification of ABO blood group, but also for antibody screening tests, and according to the principle of agglutination, recipients of blood for blood donor and cross matching experiment, confirmed the two other red blood cells in vitro blood type system also compatible, may be given a transfusion to ensure the safety of blood transfusion. Transfusion of blood products such as plasma, platelets, and cryoprecipitate can be performed with the same blood type, because there are no red blood cells and no agglutinin among them. In fact, this myth is very common among the public, which believes that people with the same blood type can be given blood transfusions. However, the public’s understanding of blood transfusion still needs to be improved.
Refers to the blood transfusion by intravenous infusion to the patient’s a treatment, the therapeutic effect of blood transfusion in addition to a large amount of blood loss when the blood supply, to maintain blood volume, blood pressure, as the shock resistance and the measures to prevent hemorrhagic shock, but also has the ability of red blood cells to carry oxygen supply, in order to correct for red blood cells to reduce or its ability to carry oxygen decrease caused by acute anoxia; At the same time, various coagulation factors can be supplemented to correct the blood coagulation disorders in some patients.
The question is, blood loss should be replenished? Wrong too! Losing blood to replenish blood is also a wrong traditional concept. Blood transfusion is undoubtedly one of the first aid measures in clinical practice. If the body loses large amounts of blood (accounting for more than 1/3 of the total body blood volume), it can lead to shock. However, patients with blood loss of less than 800 ml may be considered to avoid blood transfusion. Because a 50 kg adult body about 4000 milliliters of blood, of which about 4/5 (3200 ml) in the peripheral vascular blood in the body’s blood circulation, the remaining 800 ml of blood temporarily present in the liver and spleen etc in the “blood bank storage” for a rainy day when (such as sports and bleeding) and then enter blood circulation in order to maintain the stability of organ and tissue oxygen supply.
Therefore, transfusion is generally not considered for adults with blood loss of less than 800 ml or children with blood loss of less than 20% of the total body blood volume. Instead, an appropriate amount of crystal salt solution is mainly injected to restore the blood volume and maintain the normal operation of blood circulation. Clinical blood transfusion is only considered for patients with blood loss greater than 20% of the blood volume. It seems that transfusion of red blood cells should be the first step in the rescue of patients with blood loss, but in fact it is not so. Transfusion can fill the vascular bed of the body, and then the patient is injected with red blood cells to ensure that the blood supplies oxygen to the important organs and tissues, so as to alleviate the shock and other symptoms and signs caused by hypoxia.
There is also a very common misconception that type O blood is universal, which is also wrong. The old notion that type O is the universal blood should be abandoned. Because there are no A and B antigens on Type O red blood cells, patients with type A, B and AB can be injected when they are matched on the main side. However, the plasma of Type O blood contains anti-A antibody and anti-B antibody, if the red blood cell preparation containing Type O plasma is introduced into the body of A, B, AB patients, it will cause different degrees of immune hemolytic transfusion adverse reactions.
The immune hemolytic blood transfusion reaction is characterized by the following symptoms: blue skin, numbness in the limbs, trembling all over, chest tightness, backache, rapid heart rate, decreased blood pressure, and even death in severe cases. Therefore, attention must be paid to the choice of blood type in non-emergency situations.
Nowadays, there are many blood donation cars on the road. We should not think that the donated blood can be used directly for patients. In fact, the blood used in hospitals is collected and mixed uniformly by blood stations, and the untested or unqualified blood cannot be provided to medical institutions. The preliminary screening before blood donation and the testing after blood donation guarantee the safety of blood, including the detection of hepatitis B, Hepatitis C virus and transaminase, as well as the typing of blood type.