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Grade: 12th pass
        
Sir, if 'O'type bood group has both anti'a' and anti'b' , then how can it be transfuse with 'A' blood group. Won't it cause damage to RBC's of other person?
one year ago

Answers : (2)

dolly bhatia
200 Points
							
Subjects with blood group A carry the A antigen on their red blood cells and have antibodies to antigen B; subjects with blood group B have the B antigen and anti-A antibodies. Blood group AB carries both the A and B antigens and have no antibodies and folks with group O have no antigens but both antibodies.
Blood groups and transfusion: Circulating antibodies in a person’s blood will attack transfused RBCs from unmatching blood groups. These antibodies fix complement and cause rapid intravascular haemolysis, triggering an acute hemolytic transfusion reaction that can cause disseminated intravascular coagulation, shock, acute renal failure and death. As people with blood group AB have no antibodies, they can receive all blood groups without issues. People with blood group O can only receive RBCs of blood group O because they carry both antibodies. Blood group A can receive A and O and blood group B can receive B and O. hence, blood group O can be received by all other groups and is therefore universal donor.
Whether antibodies in donor’s blood with blood group O would start attacking cells in recipient with blood group A, B and AB? Yes, they will. Why then is O still the universal donor as they have both anti-A and anti-B antibodies?
Firstly, whole blood is not used for ‘routine’ blood transfusions. Instead, blood component therapy has replaced use of whole blood. For routine transfusions, only fraction containing packed red blood cells is transfused. Hence, in these cases, blood plasma containing antibodies is removed after centrifugation. Since O-type red blood cells contain no antigens and plasma with antibodies are not transfused, it can be donated to everyone, bar that rhesus factor matches.
Secondly, even if plasma is transfused, antibodies in donor’s plasma are a minor problem because of small amount of antibody present in donated plasma, which is further diluted on transfusion into recipient’s circulation.
 
 
one year ago
Umakant biswal
5349 Points
							
With regard to transfusions of packed red blood cells, individuals with type O Rh D negative blood are often called universal donors, and those with type AB Rh D positive blood are called universal recipients; however, these terms are only generally true with respect to possible reactions of the recipient's anti-A and anti – B 
so, the anti a and anti b will gng to bind with the receptors of o blood group , they will not going to destroy it 
HOPE IT CLEARS 

 
one year ago
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