Universal donor blood type3/13/2023 ![]() The reason is that AB blood types do not contain natural antibodies against the ABO blood groups and this avoids incompatibility reactions when a person who is blood group AB receives blood from a donor who has another ABO blood group. People with type AB blood are considered universal blood recipients. Various allergic reactions however have been known to occur in blood recipients even when blood type is an exact match. Administering a non-matching blood transfusion will cause a very dangerous reaction known as hemolytic transfusion that is caused from ABO or Rhesus incompatibilities. The donor’s blood is sometimes (if time allows) mixed with the recipient’s blood to ultimately confirm the compatibility this process is called cross matching however in the case of an immediate emergency cross matching is not always an option. Blood Transfusionsīlood transfusions are performed using donated blood from donors with matching blood groups. Blood compatibility type is always classified by these blood groups. The main blood groups are A, B, AB, O (these are known as the ABO blood groups) and D (also known as the Rhesus blood group). ![]() Scientists have yet to design a successful substitute for human blood, which is why blood donors are a vital lifesaving means for people who are in a medical emergency. Typically losing any more than 4 pints of blood at any given time will prove to be fatal. The average human being holds 9-11 pints of blood (roughly 5 litres).and the human body generally needs a minimum of 5+ pints in their system to stay alive.
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