A man whose blood group is not known meets with a serious accident and needs blood transfusion immediately. Which one of the blood groups mentioned below and readily available in the hospital will be safe for transfusion ?
Ans is O,rh- negative
Can any one explain why
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In the case of emargency the blood group O can be donated to any body of any blood group because it lacks antigen but Antibody exist and that's why it is called Universal Donar.
Thus if the blood from an Rh- person is transfused into an Rh- person the serum of the blood of Rh- person produces anti-Rh agglutinin. But if the person receives another Rh+ transfusion, the anti-Rh agglutinin will cause the red blood cells contributed by the donor to clump as soon as they enter the recipient.
The same phenomenon occurs when an Rh- women becomes pregnant with an Rh+ baby whose inherient Rh factor comes from the father.
Thus if the blood from an Rh- person is transfused into an Rh- person the serum of the blood of Rh- person produces anti-Rh agglutinin. But if the person receives another Rh+ transfusion, the anti-Rh agglutinin will cause the red blood cells contributed by the donor to clump as soon as they enter the recipient.
The same phenomenon occurs when an Rh- women becomes pregnant with an Rh+ baby whose inherient Rh factor comes from the father.
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