The occurrence of embryonic arrest after the presence of fetal heartbeat may be related to a variety of factors, such as maternal factors, placental factors, umbilical cord factors, fetal factors, and paternal factors.
Embryonic arrest usually occurs in the early stage of pregnancy and is caused by various reasons that the embryo stops developing. There are many reasons that lead to embryonic arrest, mainly including the following factors.
1. Maternal factors. If a woman has serious kidney disease, high blood pressure, cardiovascular disease during pregnancy, or intrauterine infection occurs in early pregnancy, it may lead to abnormal embryonic development or embryonic sterilizations.
2. Placental factors. If the placenta is abnormal in shape, such as membranous placenta, sail-shaped placenta, etc., it will affect the blood and oxygen supply of the fetus, which may lead to embryonic sterilizations.
3. Umbilical cord factor. If the umbilical cord is too long, it may be twisted, knotted, wrapped around the neck, etc. This may lead to blockage of part of the blood vessels or all of the blood vessels, which may lead to embryonic sterilizations.
4. Fetal factors. If the embryo or fetus has chromosomal abnormality, such as chromosome number or structure abnormality, etc., it may lead to embryo abortion.
5. Father factor. If the father has low sperm quality, it may also lead to early miscarriage or embryonic sterilizations.