What is the Rhesus factor?

Many future mothers for certain sometime heard or read about incompatibility of blood. Often data on this phenomenon are inexact, that adds excitements. If blood of the father a Rhesus factor-positive, and blood of mother — a Rhesus factor-negative, danger to the child exists far not always. It is easy to prove it statistically: such combination meets approximately in 10 % of marriages, and still only at 0,5 % of all children, i.e. at one of two hundred, there is an incompatibility of blood caused by a Rhesus factor. Thus, danger is much less, than consider many.
The antigene named a Rhesus factor, contains in эритроцитах 85 % of people, their blood name a Rhesus factor-positive. The others of 15 % of people have no Rhesus factor, their blood name a Rhesus factor-negative. If blood a Rhesus factor-positive of the person gets to blood system a Rhesus factor-negative of the person at the last as protection Rhesus factors-antibodies are developed. At repeated hit a blood Rhesus factor-positive in an organism the Rhesus factor-negative of the person occurs the reaction upsetting functions of an organism. Therefore at blood transfusion it is important to consider not only blood group, but also a Rhesus factor.
If the Rhesus factor-negative mother gives birth to a Rhesus factor-positive of the child эритроциты its blood can get into its blood system, as a result in its organism antibodies are formed. At repeated pregnancy a Rhesus factor-positive the child parent antibodies get to blood system of a fruit and destroy there эритроциты (red blood little bodies). At such children right after births the jaundice in the heavy form of which they die develops or receive the hardest complications if the doctor immediately does not take measures. Among consequences of such jaundice it is possible to name a paralysis or other defeats of a brain. In due time made haemotransfusion (blood transfusion) allows to rescue and keep health of 90 % of such children.
Danger of incompatibility of blood appears almost always at the subsequent беременностях. It occurs because эритроциты the child get to blood of mother in the course of sorts, and Rhesus factors-antibodies are developed in an organism of mother after some days or even weeks. Therefore the first child is out of danger. Once having formed in an organism of the woman, an antibody never do not disappear any more. Therefore and subsequent children are endangered by the second.
Already during pregnancy it is possible to reveal, whether danger as a result of the Rhesus factor-conflict threatens the child. For this reason at all pregnant women check group of blood and a Rhesus factor. Blood a Rhesus factor-negative of women further investigate on presence of Rhesus factors-antibodies. If they are, it is necessary to consider risk of incompatibility of blood and the dangers connected with it to a life and health of the child.
The modern medicine can prevent danger to a life and health of the child, connected with incompatibility of blood. Antirhesus factor-gamma globulin introduction right after sorts interferes with development at mother of Rhesus factors-antibodies. However till now means which would neutralise action of Rhesus factors-antibodies which have already arisen in an organism is not found yet.

Other reasons of incompatibility of blood
Except Rhesus factor-incompatibility, it is observed also incompatibility on blood group. Incompatibility occurs in blood groups About (I), A (II), In (III) and АВ (IV), if at the child group of blood And, and at mother blood of group 0. It is not so dangerous, as a Rhesus factor-incompatibility, and has no such drama consequences. In this case at first observe, whether the heavy form of a jaundice develops at the newborn: constantly supervise concentration of a yellow-orange pigment — bilirubin in blood of the child in due time to solve, whether it is necessary гемогрансфузия. Incompatibility on blood group meets approximately the same frequency, as well as a Rhesus factor-incompatibility, As a whole 1 % of newborns is exposed to danger.
From this follows, that the regular medical control for future mother is very important.