LABORATORY REVIEW
PHYSIOLOGY OF THE CIRCULATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A
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B
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AB
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O
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Detailed explanation-1: -Answer From Rajiv K. Pruthi, M.B.B.S. For emergency transfusions, blood group type O negative blood is the variety of blood that has the lowest risk of causing serious reactions for most people who receive it. Because of this, it’s sometimes called the universal blood donor type.
Detailed explanation-2: -Universal donors are those with an O negative blood type. Why? O negative blood can be used in transfusions for any blood type.
Detailed explanation-3: -Type O blood is known as the universal donor, because its erythrocytes lack both antigens A and B and will not be agglutinated by any type of plasma into which they are introduced.
Detailed explanation-4: -O positive blood can’t be used universally because it has the Rh factor, but it is compatible with all positive blood types including O+, A+, B+, and AB+. Since over 80% of the population has a positive blood type, type O positive blood is in high demand.