For any couple who desires to have a baby, abnormal phenomena such as fetal cessation and delayed fetal development are the least desirable. But some couples are really not so lucky, and they may experience both of these abnormal situations on their way to having a baby. So what is the reason for slow fetal development when the fetus stops once?
1、 Fetal arrest
The reasons for fetal arrest and fetal developmental delay are quite complex. Fetal arrest is mainly related to the mother's endocrine disorders, uterine lesions, chromosomal abnormalities, immune factors, reproductive tract infections, and environmental factors.
Endocrine disorders, as we all know, refer to the inability of our endocrine system to coordinate with each other. If any one of these links fails, the implantation and continued development of the fetus may be severely affected, ultimately leading to miscarriage.
Uterine abnormalities refer to the impact of the overall environment of the mother's uterus on the fetus, and the uterus is like a small house for the fetus to settle down in. If there are abnormalities in the mother's uterus, it is not suitable for the fetus to live in, which can ultimately lead to fetal arrest, such as adhesions in the uterine cavity, uterine fibroids, unicornuate uterus, bicornuate uterus, and so on.
Chromosomal problems are not only found in mothers, but also in fathers who have chromosomal abnormalities that can cause fetal arrest. Chromosomal quantity and structural abnormalities are the two most common situations. Chromosomal abnormalities can lead to embryonic abnormalities and have a direct impact on the embryo.
Although immune factors can lead to fetal arrest, fetal arrest caused by this reason is relatively rare. This is a situation where the immune system between the mother and the fetus cannot adapt to each other, resulting in the mother's immune system rejecting the presence of the fetus, ultimately leading to fetal arrest and miscarriage.
Early maternal reproductive tract infections, various bacteria, viruses, and pathogens invading the fetus can also cause the fetus to stop developing or lead to malformed fetuses. For example, cytomegalovirus, severe torch infections, mycoplasma infections, and so on.
Environmental factors are also an important factor leading to fetal arrest. Environmental factors are diverse, such as X-rays, continuous noise, high temperatures, and other physical factors; In addition, there are also factors such as heavy metals and various chemical gases that can stimulate embryos, leading to the cessation of fetal development and miscarriage; Unhealthy lifestyle habits of expectant mothers, such as smoking and drinking, staying up late for a long time, and abusing drugs, can all lead to early fetal arrest.
2、 Delayed fetal development
Delayed fetal development can be attributed to both maternal and fetal factors.
Firstly, if the mother's weight base is less than 54 kilograms before pregnancy, or if she weighs too much during pregnancy, it can increase the risk of fetal developmental delay; Another issue is that if expectant mothers suffer from malnutrition, it will be difficult to meet the developmental needs of the fetus, which can naturally lead to fetal growth retardation. Pregnant women themselves suffer from some serious diseases, such as severe anemia, heart disease, and severe pregnancy induced hypertension syndrome, among other cardiovascular diseases. These factors can cause malnutrition during pregnancy, causing the fetus to also suffer from malnutrition and affecting its growth and development.
If the fetus suffers from some genetic diseases or has chromosomal problems, it can also cause fetal developmental delay; If the fetus is infected with certain bacteria and viruses, such as rubella virus, Toxoplasma gondii infection, etc., it is also one of the causes of developmental delay. Finally, multiple pregnancies can also lead to delayed fetal development.
