What reason is placental immaturity
summary
Every year, about 13 million premature infants come to this world ahead of time. Because their body organs are not fully mature when they are born, the external environment they are facing can not have the right temperature and good nutrition as in the mother. So what's the reason for placental immaturity?
What reason is placental immaturity
First: maternal factors generally pregnant women with uterine malformations, such as double horn uterus, single horn uterus, double uterus, uterine mediastinum and other congenital hypoplasia, easy to make the fetus premature, because the uterus is the place where the fetus grows, if the uterine muscles can not be well stretched, it is easy to have premature birth. Congenital cervical dysplasia, or postnatal cervical injury due to childbirth, abortion or surgical operation, the relaxation of cervical orifice, and the expansion of amniotic sac into cervical canal can lead to premature rupture of membranes and premature birth. Sometimes, even if the uterine development is normal, it may be due to the excessive expansion of the uterus during pregnancy, such as multiple pregnancies, excessive amniotic fluid and other reasons, resulting in high uterine pressure and excessive stretching of uterine muscles, which are also common causes of premature delivery. There are chorioamnionitis, premature rupture of membranes and other intrauterine infections, can lead to premature birth. The fetus living in the uterine environment with poor placental function is prone to intrauterine growth retardation and intrauterine hypoxia, which is worse than the prognosis of premature infants caused by other reasons.
Second: pregnancy complications during pregnancy, if the mother has acute infectious diseases, such as rubella, influenza, acute infectious hepatitis, acute pyelonephritis, acute cholecystitis, acute appendicitis, pregnancy induced hypertension, heart disease, these diseases are also easy to lead to premature birth. In addition, the mother's endocrine disorders, such as progesterone or estrogen deficiency, severe hyperthyroidism, diabetes, etc.; pregnant women with trauma and surgery history may be due to mental stress, high blood pressure leading to tissue hypoxia, insufficient oxygen supply to the uterus and placenta; malnutrition, severe anemia, especially protein deficiency and vitamin e, folic acid deficiency of pregnant women; Placental abnormalities, and umbilical cord is too thick, too short, twist, knot, these are the causes of premature birth.
Third: social factors preterm birth is easy to occur in people with low social level, no occupation and low economic income. This is because these people are engaged in heavy physical labor, long working hours, overwork, and can not carry out normal prenatal examination, and their nutritional status is poor. Premature birth is also easy to occur in modern city mothers, they have more psychological pressure and work pressure, emotional fluctuations, mental stress; some mothers in order to slim down, resulting in too light weight, also easy to lead to premature birth; some women because of work or fear of labor pain, require the implementation of cesarean section in advance.
matters needing attention
The preterm birth rate of pregnant women under 20 years old or over 35 years old is significantly higher, especially those less than 20 years old and those with short stature have a higher risk of preterm birth. Previous abortion history, especially late abortion history, recurrent abortion, induced abortion, induced labor or less than a year after abortion, and pregnancy again, the possibility of premature delivery is the largest. Because abortion has different degrees of damage to the cervix, it will lead to cervical incompetence and increase the rate of premature birth. Pregnant women with bad personal habits, such as smoking, drinking, partial eclipse, and frequent and intense sexual life in late pregnancy, are easy to cause premature rupture of membranes, which is also a common cause of premature delivery.
