Health

The rarest blood type in the world. Rhesus factor of the rarest blood groups in humans

Blood loss - a dangerous phenomenon, fraught with sharpdeteriorating state of health, the death of a person. Thanks to the advances of medicine, doctors are able to compensate for loss of blood transfusion donor biomaterial. To carry out the transfusion is necessary, given the kind of blood donor and the recipient, or the patient's body will reject the alien biomaterial. Such species there are at least 33, of which 8 are considered essential.

Blood group and Rh factor

To succeed you need to know exactly what it transfusionBlood variety and Rh factor. If they are not known, it is necessary to do a special analysis. According to its biochemical characteristics of blood is conventionally divided into four groups - I, II, III, IV. There are also other notation: 0, A, B, AB.

Opening of blood types - one of the most importantdevelopments in medicine in the last hundred years. Before their discovery transfusions were considered dangerous, risky - but sometimes it was successful; otherwise, the operation ended with the death of the patient. When the transfusion process is important and is another important parameter - the Rh factor. In 85% of those red blood cells contain a particular protein - the antigen. If it has, the Rh factor is positive, and if it is not - Rh negative.

85% of Europeans, 99% of Asians, 93% of AfricansRh positive, the rest of people listed races - negative. The discovery of the Rh factor was held in 1940. To determine the presence of his doctors failed after much research biomaterial rhesus monkeys, hence the name of the antigen protein - "Rh." This discovery has allowed to drastically reduce the number of immunological conflict observed in gestation. If the mother has an antigen, and the fetus it is not, there is a conflict, which causes hemolytic disease.

What is considered a rare blood group: 1st or 4th?

According to statistics, thecommon group - the first: it supports - 40.7% of the population. People with biomaterial type «B» slightly less - 31.8%, it is mainly the people of Europe. People with a third type - it is 21.9% of the world population. The most rare blood type is considered to be the fourth - is just 5.6% of the people. According to the first group of available data, in contrast to the fourth, not considered rare.

Due to the fact that transfusion doesvalue is not only a group of biomaterial, and Rh factor, it is necessary to take into account as well. So, people with Rh-negative species biomaterial first 4.3% of the world, the second - 3.5%, the third - 1.4%, the fourth - only 0.4%.

What you need to know about the blood group of the fourth

As the findings of research,variety AB is a relatively new - only about 1,000 years ago as a result of blood mixing A and B. People with a fourth different type of strong immune system. But there is evidence that they are 25% more likely to suffer from heart disease, blood vessels than people with blood A. People from the second, the third group are suffering from cardiovascular diseases in the 5 and 11% less than the fourth.

On approval of physicians and psychologists, mediabiomaterial AB - good, selfless people who are able to listen, to show compassion and help. They are able to feel the full depth of feelings - from the big love to hate. Many of them - the real creators, they are people of art, a fine sense of the music, appreciate literature, painting, sculpture. It is believed that among the creative bohemia lot of people with a variety of blood.

Their creative nature is in constantlooking for new emotions, they are easy to fall in love, to have increased sexual temperament. But they have their drawbacks: they are poorly adapted to real life, different distractions, take offense at trifles. Often, they can not cope with their emotions, their feelings take up over reason and sober calculation.

Features transfusion

To carry out the transfusion procedure should be withGiven the Rh factor - both the donor and the recipient. If we ignore these laws, the recipient's immune system will reject the donor biomaterial, which causes kidney failure, erythrocyte agglutination, shock and death of the patient.

In order to perfect donor biomaterialcombined with the recipient's immune system, it should be of the same type and Rh factor. However, in some cases, different types of blood type and Rh factor goes well, as can be seen from the table of compatibility of red blood cells (horizontally - the recipient, vertical - donor).

I Rh-

I Rh +

II Rh-

II Rh +

III Rh-

III Rh +

IV Rh-

IV Rh +

I Rh-

+

-

-

-

-

-

-

-

I Rh +

+

+

-

-

-

-

-

-

II Rh-

+

-

+

-

-

-

-

-

II Rh +

+

+

+

+

-

-

-

-

III Rh-

+

-

-

-

+

-

-

-

III Rh +

+

+

-

-

+

+

-

-

IV Rh-

+

+

+

+

+

+

+

+

IV Rh +

+

+

+

+

+

+

+

+

The rarest blood type in the world

According to statistics, the most rarenegative blood group is considered the fourth: it supports - it is only 0.4% of the population. Ideally, such people must pass own biomaterial advance, if necessary to be able to make any point in transfusion. In addition to the eight most common combinations, there are other rare species. So, in 2013 there were photo and video evidence of the existence of Vel-negative type, which is found in 0.04% of the people.

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