What is the cause of fetal arrest?

Fetal arrest means that the embryo cannot develop normally, which is often caused by a series of reasons in early pregnancy. At this time, the symptoms shown by B-ultrasound examination are irregular Tyr shape or no fetal heartbeat, which are generally miscarriage or stillbirth. However, there are many reasons for fetal growth retardation.

Sperm problems

Factors such as environmental pollution, food safety and radiation are damaging men's sperm, causing a sharp increase in the number of men suffering miscarriages. The promotion of emerging technologies such as sperm DNA fragmentation detection is very slow. The chromosomes in the sperm nucleus carry the genetic code of each human individual. When the human sperm and egg combine to form a fertilized egg, the sperm will pass the genetic information in the nucleus to the offspring to ensure embryonic development.

Therefore, sperm chromosome abnormality or sperm nuclear immaturity can lead to abnormal or terminated embryonic development and is the most common male factor causing female miscarriage. Sperm DNA fragmentation detection is one of the latest methods to evaluate the functional status of sperm nucleus. Therefore, it is generally recommended to first rule out the male cause after the fetus stops moving, and check the male's sperm deformity rate and sperm DNA fragmentation rate (DFI for short, which is sperm DNA fragmentation test).

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. During the early development of the embryo, three important hormone levels are required: estrogen, progesterone, and human chorionic gonadotropin. As for the mother, if her own endogenous hormones are insufficient, it cannot meet the needs of the embryo and may cause embryo arrest and miscarriage.