User:Lexicans/Blood Compatibility
From Wikipedia, the free encyclopedia
There are 8 main, common blood types determined by the absence or presence of these antigens, each of which can trigger an incompatible immune response in the body if they are foreign to a patient’s body, these blood types are A+, A-, B+, B-, AB+, AB-, O+ and O- [1].
Warning This page contains syntax errors ("cite%20note") caused by a VisualEditor bug. Do not copy/move content from this page until the errors have been repaired. See {{Warning VisualEditor bug}} for more information. |
Each individual person has an ABO blood groups and an Rh factor antigen which can be either positive or negative, inherited from our biological parents. Each parent donates one of their two ABO genes to their offspring. The A allele and B allele are dominant and the O allele is recessive. Rh factor is a protein found on the covering of red blood cells if a patient has this protein they are Rh positive. The Rh positive factor protein is dominant to the Rh negative gene.[2] When a blood transfusion is required patients are usually given blood from someone from the same ABO and RhD group, however if unavailable or in an emergency situation a patient can be provided with blood from another group that won’t react with the immune system’s antibodies.[3] It is vital that a compatible blood type is used on a patient to decrease the risk of organ failure.[3] On average 112.5 million units of donated blood is collected globally each year, with 47% of these donations collected in high-income countries that only contains 19% of the world population[4].
Blood Type | World Population (%) |
---|---|
O+ | 38.67 |
A+ | 27.42 |
B+ | 22.02 |
AB+ | 5.88 |
O- | 2.55 |
A- | 1.99 |
B- | 1.11 |
AB- | 0.36 |
Blood type distribution is vastly different for specific racial and ethnic groups. This is a worldwide population calculation.