Rh factor - a concept that was introduced to the academic community in the 1940s.It implies the presence or absence of antigens (red blood cells) on the surface of red blood cells.It is a "plus" or "minus" play a decisive role for the manifestation of Rhesus-conflict.
What is Rhesus conflict
Rhesus conflict occurs when antibodies Rh-positive blood enters the "negative" blood.They are perceived by the body as foreign, therefore, begins to produce antibodies that perform the function of protection.Home Rhesus conflict is possible in two cases.
first of them - a blood transfusion.It is important to know that the Rh negative people can be poured only Rh-negative blood, and vice versa, Rh-positive - only Rhesus positive.
second - the most common - Pregnancy Rh-negative women.The risk of Rhesus-conflict appears when the expectant mother is Rh negative and the father - is positive.All other combinations are not a threat.Often, women and girls have a vague idea of Rh conflict and believe that
How dangerous Rh conflict?
To begin with, a pregnant woman with Rh-negative Rh factor - is still a medical mystery sure to inspect for sensitizing, ie, the presence of antibodies in the blood Antibodies - "soldiers' immunity , preventing antigen positive blood.Sensitizing level increases in some cases: the transfusion of Rh-positive blood to Rh-negative, with an ectopic pregnancy Ectopic pregnancy - Fatal dangerous , is 7-8 weeks, abortion, miscarriage Miscarriage - whether it can be insured? , injured a pregnant woman, chorionic villus sampling (manipulation of the fetal membranes).Also Sensitization can occur before birth, if the blood has not yet appeared in the light of Rh-negative red blood cells fall girl Rh-positive mothers.The lowest level of sensitization occurs after an ectopic pregnancy, then - after a miscarriage, abortion, and the highest - after a normal delivery (10-15%).All depends on the quantity of erythrocytes mother enters the bloodstream.The first pregnancy Rh-negative women usually passes without complications, since antibodies are not developed yet.But to know the most important moments of pregnancy problem is necessary for each of us.
presence in the blood of Rh-negative mother's antibodies to red blood cells have no effect on her state of health, but it can harm the fetus.The collapse of red blood cells leads to disruption of the liver, kidneys and brain of the unborn child, as well as to the development of hemolytic disease of which was born the child.The disease develops rapidly after birth, which is caused by the arrival of a large number of antibodies in the blood of the child, if the integrity of the blood vessels of the placenta was broken.
After birth pronounced outward signs of hemolytic disease: yellowness, anemic.There is also the threat of brain disorders and nervous system, developmental delays.Dangerous Rhesus conflict and the possibility of a miscarriage or stillbirth.
therefore take every precaution - the main task of the future mother.Fortunately, the current level of development of medicine can significantly reduce the severity and reduce the risk of pregnancy complications.In a special perinatal center expectant mother and her child are under constant supervision of doctors.If you can bring up to 38 weeks of pregnancy, a caesarean section is performed, but if not - do intrauterine blood transfusion: the fetus is poured 20-50 ml of packed red blood cells, penetrating the vein of the umbilical cord through the abdominal wall of the mother.This helps prolong the pregnancy and improve the condition of the fetus.This procedure is performed under ultrasound guidance.
behold, the child was born.Is that all?The answer is no.In the very short time - within 72 hours - the woman must enter into the blood Rh immunoglobulin, which prevent the development of Rh conflict in subsequent pregnancies