In China, 35 is considered old. However, there are many unfavorable factors in elderly pregnancy, both at home and abroad.
First of all, older women are less likely to get pregnant. As women get older, ovulation becomes more and more irregular, and the probability of pregnancy will decrease. If you are pregnant after the age of 30, you are definitely not as likely to get pregnant as you were in your twenties. Not long ago, we received a 37-year-old old woman. When she was young, she didn't care about having children because she was busy with work. Now she wants to have children, but she can't have them. If you only rely on natural conception, time waits for no one, and the older you get, the more dangerous it is. We finally decided to adopt in vitro fertilization for her, then implanted the fertilized egg into the uterus and made a test-tube baby.
Secondly, older women have a high probability of miscarriage. A study in Denmark shows that after the age of 35, the probability of pregnancy failure will greatly increase. This study found that when a woman reaches the age of 35, the probability of pregnancy failure due to abortion, stillbirth or ectopic pregnancy is 20%. At the age of 42, the probability of failure is as high as 50%. Between the ages of 22 and 24, the probability of miscarriage is 8.9%, but by the age of 45, the probability has increased to 74.7%. The risk of ectopic pregnancy will also increase with the mother's age, from 2 1/.4% to 6.9% at 44 hours.
Third, the probability of fetal malformation in elderly women is high. When you get older, all parts of the organs begin to age, and it is easy to have genetic mutations, giving birth to children with congenital stupidity. This kind of fetus is short at birth, with slow growth and mental retardation, and 50% of them have congenital heart disease and are prone to respiratory infection. Moreover, 20%-30% died within 1 year, and 50% died within 5 years. Light people can survive to adulthood, but their intelligence is low. There is no cure for this disease, but only education and training.
According to the survey, the incidence of congenital idiocy is11500 in pregnant women aged 25-29, 1/800 in pregnant women aged 30-34, 1/l/50 in pregnant women aged 35-39 and1l/50 in pregnant women aged 44.
This is because women's germ cells are the same age as themselves, and generally begin to age after the age of 35 and are easily infected by viruses. Radiation, noise, microwave radiation, environmental pollution, smoking, alcoholism, etc. It is easy to damage the germ cells of older women, leading to abnormal meiosis of germ cells, such as chromosome separation, breakage and translocation. The fetus formed by fertilization of such germ cells will produce chromosome diseases, and congenital idiots are germ cells.
Fourth, elderly women are prone to various complications. Older women may be complicated with gestational diabetes, pregnancy-induced hypertension and cardiovascular diseases. These factors will lead to abortion, placental abruption, miscarriage and premature delivery, which will seriously affect the development of the fetus. Older pregnant women are also prone to a variety of diseases, such as uterine fibroids and ovarian cysts, which also have a certain impact on fetal development.
Is the development of obstetric technology more conducive to the production of the elderly?
Technically, the continuous development of obstetric technology in recent years can meet the needs of elderly women to the greatest extent and better protect women and fetuses.
The more mature technologies are as follows: IVF technology has matured. The probability of natural pregnancy in older women is very low. In vitro fertilization can be used to combine eggs and sperm in vitro and then implant them into the mother.
Chromosome examination. If you are pregnant after the age of 35, you can have a chromosome check. Generally, amniotic fluid is taken from pregnant women/0/6 weeks of kloc for chromosome examination to detect whether the fetus has congenital diseases.
There are many prenatal monitoring projects. Pregnancy complicated with diabetes and hypertension can be monitored. Imaging examinations such as B-ultrasound can also provide convenience for doctors to diagnose.
Cesarean section technology is mature. Old age is not an inevitable condition for cesarean section, but considering comprehensively, the cervix of elderly women is generally tough and natural production is difficult, so cesarean section is more common for elderly women. Moreover, because of high-risk factors, elderly women do more cesarean section for insurance.
Fetal heel blood examination (also called neonatal disease screening). 3-7 days after the birth of a normal baby, obstetricians should draw 2-3 drops of blood from the heel of the baby, so as to detect whether the baby has some congenital or hereditary metabolic disease at the earliest time and get early treatment. Through these screening, diseases such as congenital hypothyroidism, phenylketonuria and galactosemia can be found.
Older women should make preparations early.
If you want to have a baby over the age of 35, you'd better have a comprehensive physical examination (maternal and child health hospital or maternity hospital) when you are ready to get pregnant, and cure yourself first.
For example, some women have breast tumors, uterine fibroids or tumors of other organs, which should be removed first, so as to prevent the fetus from growing tumors after pregnancy, and finally make the fetus dangerous.
Some women have high blood pressure and should be treated first. After the treatment, the doctor thought it had no effect on fertility, and then they got pregnant.
Older women should take folic acid tablets orally in the first three months of pregnancy, starting from the first three months of pregnancy and eating them until the third month after pregnancy, which is good for preventing fetal neural tube malformation. Calcium supplementation during pregnancy is beneficial to prevent hypertension during pregnancy.