Why is it necessary to know the blood groups before giving transfusion ?
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Answer:
because in some case if the blood groups doesn't match then patient can die
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Explanation:
The importance of knowing your blood type is to prevent the risk of you receiving an incompatible blood type at a time of need, such as during a blood transfusion or during surgery. If two different blood types are mixed, it can lead to a clumping of blood cells that can be potentially fatal.
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