premature maturation of the placenta is dangerous because the body blood circulation and the fetus is not getting enough nutrients and oxygen.Therefore, during pregnancy several times held ultrasound placenta.
What does the placenta
placenta (afterbirth) - this is a temporary body which is formed during pregnancy and ceases to function (born) after birth.The placenta is formed at the site of attachment of the ovum to the uterine wall on the 12th day of pregnancy.Completely it begins to function after I trimester (first 12 weeks).By this time, it is a disc 20 cm in diameter, weighing 500 g Using special drive placental villi grow into the wall of the uterus, blood vessels where it is communicated to the blood vessels of a woman's uterus wall.The opposite side of the disc facing the fetus and departs from her umbilical cord to the arteries and veins inside.
The main function of the placenta to the fetus delivery of nutrients and oxygen, and the conclusion of his body's metabolic products Metabolism: The basis of life of all living .Placenta also a barrier to many toxic substances - they do not pass therethrough.That is why in the first three months, until the placenta is formed, a woman should not take any medicines.But in the first 12 days of the embryo toxic effects on the fetus from the mother is impossible, as its circulation is not yet connected to the blood circulation of the body of the mother.This is important because women often worry about how to tell one or another of her sins, she did not know about the pregnancy (one-time use of alcohol, drugs).
After the 12th week of pregnancy, the placenta begins to function, but it is constantly changing, depending on what needs to the growing fetus.But it requires more nutrients and oxygen, and it stimulates the growth of the placenta and its vascular network.Full maturity of the placenta occurs in 36-37 weeks, then she begins to gradually "grow old" - it appears the areas of salt deposits deposition of salt - a disease of old men? and drying of some blood vessels.Therefore, prolonged pregnancy, observe the condition of the placenta - is whether it is the fruit of all the necessary supplies.
How to determine the degree of maturity of the placenta
degree of maturity of the placenta and the correspondence of this indicator gestational age is determined during ultrasound (US).During the ultrasound determined the density of the tissues of the placenta (ehostruktura), which varies depending on the gestational age, the thickness of the placenta and its presence in the aggregations of salts (petrifikatov).
There are four stages of maturation of the placenta (0 - III): 0 - up to 30 weeks, I - 27-36 weeks, II - 34-39 weeks, III - after 36-37 weeks of pregnancy.Stage III - it is a gradual physiological aging of the placenta.
When people talk about premature aging of placenta
sometimes stage III maturation of the placenta begins early.If such symptoms began before 36 weeks, we speak of premature aging of the placenta (II degree of maturity should not appear before 32 weeks).
Since the placenta in premature aging is starting to "turn off" its activities, the fetus suffers from a lack of nutrients and oxygen.This particularly affects the state of the brain.Premature aging of the placenta may cause various mechanical damage effect on the uterus or the mother of harmful substances.It may be difficult previous birth, abortions, sudden hormonal changes (eg, against thyroid diseases), acute and chronic diseases of mother, intoxication (smoking, alcohol, drugs, industrial hazards), gestosis (late toxicosis of pregnancy), various inflammatoryProcesses in the uterus, blood incompatibility of mother and fetus, abnormal location of the placenta in the uterus (close to the inner zevu - out of the uterus), partial detachment of the placenta, multiple pregnancy, and some other reasons.
The risk of premature maturation of the placenta
It all depends on when the process starts and how it is expressed.It has been found that a small premature maturation of the placenta is usually no danger and is not accompanied by any deviations from the fetus - it is simply a personal (usually hereditary) feature of this woman.Besides the fetus and the placenta itself well to function properly under conditions of aging and placenta (these disturbances can be compensated for), so that a reduction function of the placenta (placenta insufficiency) can speak only if detected any violation by the fetus.Early maturation of the placenta is a signal for the state of research utero-placental blood flow.If there is no evidence of impaired uterine blood flow, the premature maturation of the placenta is usually not treated.
If revealed violation of utero-placental blood flow, it threatens the emergence of placental insufficiency placental insufficiency - a deviation from the norm - circulatory disorders of the fetus.This woman needs help: fetal circulation may well be restored with the help of various drugs.But if treatment is not carried out, it could seriously affect the status of the child.
premature maturation of the placenta should be identified in a timely manner and on the testimony of untreated, then it is really having a healthy baby.