The first negative blood group: its characteristics and impact on pregnancy.

It's not a secret for anyone that the blood of a person can belong to one of four groups. They are genetically determined and laid down as early as the fifth week of embryo development, after which they do not change throughout life. This division is based on the presence of antigens and antibodies in the blood. Their combination and correlation determines the blood group of a person. When determining the blood group, the presence of antigens (A and B) and antibodies (alpha and beta) are taken into account. The most common is the first blood group, which is also universal, i.e. Suitable for all with transfusion. But more recently the Ministry of Health of the Russian Federation has forbidden to do a transfusion, if the groups do not coincide. Thus, the condition of identity must be observed for the possibility of transfusion, in spite of the universality of the blood of the first group.

In addition, human blood has such a characteristic as the Rh factor. It can be negative and positive. Rhesus is a protein found on the surface of red blood cells. The negative blood group is distinguished by the lack of protein, which in no way is a pathology. It's just a feature of the blood. Rhesus-positive blood, on the contrary, has this protein in its composition. It is very important to take into account the Rh factor for blood transfusion. For example, if the patient has the first negative blood group, he can not be transfused with the first Rh-positive. This is fraught with Rh-conflict, which can only aggravate the patient's condition, and not help him. And even lead to death. Given that the Rhesus-negative people on the planet are only about 15%, among them the first negative blood group is rare.

For blood transfusion it is best to use the blood of the next of kin, since it most closely matches the composition, especially when it comes to the rare first negative group.

The course of pregnancy and childbirth in women.

There is a possibility that the first negative blood group can cause some problems to women during pregnancy. This is due to the occurrence of Rhesus-conflict due to positive rhesus in the fetus. But this is possible only with a positive Rh factor in the child's father, who was inherited and toddler. But in such cases, modern medicine is able to cope. It is important only to go through all the necessary procedures in time. If the father of the child also has a negative Rh factor, the course of pregnancy will not be different from Rh-positive mothers. Otherwise, the first negative blood group has no contraindications for pregnancy and childbirth. It will also be good if one of the relatives with the same blood will be in "combat readiness" in case of a large blood loss in the mother in order to be able to quickly surrender the necessary blood or its elements.

For each person, it is important to know your blood type and Rh, so that doctors can be informed if necessary. Some even make a special mark in the passport, which helps to avoid losing time on conducting analysis in emergency situations.