It's not a secret for anyone that the blood of a person canbelong to one of four groups. They are genetically determined and laid on 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 group of human blood. When determining the blood group, the presence of antigens (A and B) and antibodies (alpha and beta) is 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 identity condition for the possibility of transfusion should be respected, in spite of the universality of the blood of the first group.
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 groupblood can cause some problems to women during pregnancy. This is due to the occurrence of Rh-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, then 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 "alert" in case of great blood loss in the mother in order to be able to quickly surrender the necessary blood or its elements.
For each person it's important to know your groupblood and rhesus in order to inform the doctors if necessary. Some even make a special mark in the passport, which helps to avoid wasting time on conducting analysis in emergency situations.</ p>