There may be issues
A Group and Screen is taken pre transfusion, this is to check the blood group to ensure the patient recieves the correct blood group.
Blood group is important especially pregnancy. It is also important to know the blood group for transfusion of blood or transplant of organ.
o negative
Blood transfusion does NOT depend on which religion a person belongs. All that is taken into account is the compatibility of the blood group pf the donor and the recipient.
blood group O because it have no antigen.
to blood group B and AB.
Nothing will happen. People with type AB blood can receive all types of blood (AB, A, B, O)
O Rhesus negative
it occur due to mismatch of blood. if recipient is denoted wrong type of blood group for example if a recipient have blood group a if he or she have donated blood group b they the anti antigen A present in blood group b will destroy the blood group A this is called clumping of blood.
because in blood group A antigen A is present while not in O so it will destroy the characteristic of blood group O.
Never, unless they had full body transfusion
if you have a blood transfusion, knowing your blood group means you can tell the doctor, and get the right blood into you, or it can clot, if they put the wrong blood type into you