Question

Why is a person with blood group o called a universal donor ????​

Answer 1

Answer:

It is called the "universal donor" type because it is compatible with any blood type.

Explanation:

Hope it helpful ✌️✌️

Answer 2

Explanation:

You have type AB blood. Your plasma does not have antibodies against type A or type B blood. About 5% of people (5 in 100) in the U.S. have type AB blood, with 1% having AB-negative (AB-) blood and 4% having AB-positive (AB+) blood.

Blood received in a transfusion must have the same antigens as yours (compatible blood). If you get a transfusion that has different antigens (incompatible blood), the antibodies in your plasma will destroy the donor blood cells. This is called a transfusion reaction, and it occurs immediately when incompatible blood is transfused. A transfusion reaction can be mild or cause a serious illness and even death.

Type O-negative blood does not have any antigens. It is called the "universal donor" type because it is compatible with any blood type. Type AB-positive blood is called the "universal recipient" type because a person who has it can receive blood of any type. Although "universal donor" and "universal recipient" types may be used to classify blood in an emergency, blood type tests are always done to prevent transfusion reactions.

Minor antigens (other than A, B, and Rh) that occur on red blood cells can sometimes also cause problems. So they are also checked for a match before giving a blood transfusion.

Serious transfusion reactions are rare today because of blood type tests.

Rh test

Rh blood type checks for the Rh antigen (also called the Rh factor) on red blood cells. If your red blood cells:

Have the Rh antigen, your blood is Rh-positive.

Do not have the Rh antigen, your blood is Rh-negative.

For example, if you have the A and Rh antigens, your blood type is A-positive (A+). If your blood has the B antigen but not the Rh antigen, your blood type is B-negative (B–).

Rh blood type is even more important for pregnant women. A problem can occur when a woman who has Rh-negative blood becomes pregnant with a baby (fetus) that has Rh-positive blood. This is called Rh incompatibility. If the blood of an Rh-positive baby mixes with the blood of an Rh-negative mother during pregnancy or delivery, the mother's immune system makes antibodies. This antibody response is called Rh sensitization and, depending on when it occurs, can destroy the baby's red blood cells.

Rh sensitization does not generally affect the health of the baby during the pregnancy in which the sensitization occurs. But the health of a baby with Rh-positive blood during a future pregnancy is more likely to be affected. After sensitization has occurred, the baby can develop mild to severe problems (called Rh disease or erythroblastosis fetalis). In rare cases, if Rh disease is not treated, the baby may die.