No fetal heartbeat at 4 months of pregnancy

If a female friend finds that the baby has no fetal heartbeat during pregnancy, she should check it out in time, because the fetal heartbeat has not yet formed in the early stages of pregnancy. So if you don’t see the fetal heartbeat at 7 weeks of pregnancy, don’t be too nervous. Generally, you can check for the fetal heartbeat after a week or two. If there is no fetal heartbeat at 4 months of pregnancy, it is very likely that the fetus has died. We need to check the fetus through B-ultrasound and expel the dead fetus from the body.

There are generally no obvious symptoms when there is no fetal heartbeat. There may also be some symptoms such as vaginal bleeding, disappearance of pregnancy reactions, and a drop in body temperature, but they are generally difficult to detect. You can do a B-ultrasound to check the embryo and fetal heart rate, and then determine whether there is still a chance to preserve the pregnancy after the B-ultrasound examination.

Generally, the fetal heartbeat can be seen from the B-ultrasound after 7 weeks of pregnancy. If the B-ultrasound examination finds no fetal heartbeat after 8 weeks of pregnancy, the expectant mother does not need to be too nervous and can continue to observe. If there is still no fetal heartbeat after another one or two weeks, it is considered that the fetus is not developing well. It is not a reaction to miscarriage, but it cannot grow into a healthy baby, so abortion is the only choice. If there is no physiological problem, it will not affect pregnancy again.

If there is no fetal heartbeat during the first pregnancy, before trying to get pregnant again, in addition to checking antibodies on both parties to rule out immune factors, bacterial culture should be performed to rule out infection factors if necessary; and chromosome examination of both parties should be performed to rule out genetic and chromosomal causes if necessary. If you get pregnant again, you will need to carry out systematic fetal preservation.

Reasons for no fetal heartbeat

The absence of fetal heartbeat means embryonic arrest. There are many reasons for embryonic arrest. In most cases, early embryonic arrest or miscarriage may be due to problems with the chromosomes themselves. Fetal arrest is mostly due to congenital defects of the embryo, which may be caused by problems with its chromosomes or genes. The reasons for abnormal embryonic development include genetic factors, infection, exposure to radioactive substances, toxic chemicals, taking drugs that are contraindicated during pregnancy, high temperature, excessive stimulation, etc.

The sudden absence of fetal heartbeat in the middle and late stages of pregnancy may be caused by fetal hypoxia, such as umbilical cord lesions: umbilical cord torsion, umbilical cord prolapse, etc.; fetal factors: malformations, intrauterine growth retardation, infection, multiple births, etc.; maternal lesions: post-term pregnancy, pregnancy-induced hypertension, cardiovascular disease, toxic shock, etc.; placental factors: placental abruption, placenta previa, etc. All of the above reasons will lead to insufficient oxygen supply to the placenta, causing the fetus to die from lack of oxygen. It is recommended that pregnant women go to the hospital for examination and receive appropriate treatment immediately once they find the disease.