What are the reasons for not seeing the embryo during pregnancy?

The embryo will be affected by many factors during its development in the mother's body, and it will also be affected by the mother herself. Therefore, it is very difficult to conceive a newborn. The arrival of every child is a gift from God to the family, and we must cherish him/her. Next, we will introduce the reasons and factors that cause the absence of embryo in pregnancy.

reason:

There are many reasons that lead to fetal growth retardation, including immune factors, genetic factors, infectious factors, endocrine factors, anatomical factors, etc.

(1) Endocrine disorders:

Embryo implantation and continued development depend on the coordination of a complex endocrine system. Any abnormality in any link can lead to miscarriage.

(2) Immune factors:

The embryo or fetus in the uterus is actually an allogeneic transplant because the fetus is a combination of the genetic material of the parents and cannot be exactly the same as the mother. Immune incompatibility between mother and fetus causes the mother to reject the fetus. Common autoimmune diseases include systemic lupus erythematosus, scleroderma, mixed connective tissue disease, dermatomyositis, etc.

(3) Uterine abnormalities:

Both the internal environment of the uterus and the overall environment of the uterus may have an impact on the embryo. The internal environment is the endometrium. If it is too thin or too thick, it will affect implantation. About 10% to 15% of miscarriages are caused by uterine defects.

(4) Chromosome problems:

If the chromosomes are abnormal, it may cause the embryo to not develop and lead to early miscarriage. Chromosome abnormalities include quantitative and structural abnormalities. Quantitative abnormalities can be divided into aneuploidy and polyploidy. The most common abnormal karyotype is triploidy, and trisomy 16 accounts for 1/3 and is often lethal. 25-67% of pregnancies with trisomy 21, 4-50% of pregnancies with trisomy 13, and 6-33% of pregnancies with trisomy 18 will result in miscarriage.

(5) Reproductive tract infection:

In addition to the above factors, early pregnancy miscarriage caused by infection has received increasing attention from scholars at home and abroad. Severe TDRCH infection in early pregnancy can cause fetal death or miscarriage, and milder infection can also cause fetal malformations. Studies have shown that cytomegalovirus can cause delayed abortion, intrauterine fetal death, etc.

(6) Environmental factors:

Changes in physiological state during pregnancy cause significant changes in the mother's absorption, distribution and excretion of therapeutic drugs and various environmental hazards. In the early stages of development, the embryo is extremely sensitive to the effects of therapeutic drugs and environmental factors. At this time, various harmful factors can cause damage to the embryo or even loss.

After reading the above content, we learned that there are so many causes of death in pregnancy without embryo detection. Now we know that the gestation of a new life is affected by so many factors. From then on, we knew that the vitality of a newborn baby is so tenacious. Expectant mothers must fight together with their babies! Despite so many difficulties, the true meaning of life is to never give up. We must take good care of our medicines.