Embryo survives after development stops

In fact, it is not easy to successfully give birth to a baby, because even if a man and a woman have sex during the ovulation period, it does not mean that they will definitely get pregnant. To take a step back, even if pregnancy occurs, if the quality of sperm-egg combination is not good or the woman's progesterone level is low, it is possible that the test tube embryo will experience fetal arrest. Fetal arrest means that the test tube embryo cannot develop and produce a corresponding state within the required time.

So is it possible that the fetus can be revived after being sentenced to fetal arrest? In fact, generally speaking, there is very little such possibility, because the doctor has repeatedly tested it when announcing the fetal arrest and confirmed that the test tube embryo has stopped growing and developing, and then announced the result of fetal arrest. This situation almost all occurs in the early stages of pregnancy, that is, the first three months of pregnancy. Because the embryonic development process is not long and is not stable, it is very susceptible to external influences.

Generally speaking, the gestational sac will be formed during the 30th to 40th day of embryonic development, the embryonic bud and fetal heart will be formed during the 40th to 50th day, and the fetal heartbeat will be formed during the 50th to 60th day of pregnancy. If there is no embryo, fetal heartbeat or fetal bud on the 60th day of pregnancy, it means that the quality of sperm-egg combination is not good and the embryonic development is slow. At this time, the doctor will suggest to carry out the pregnancy preservation first. If after 10 days, there is still no fetal bud, fetal heartbeat and fetal heartbeat seen during the follow-up visit, then some hospitals will immediately announce that the test tube embryo has stopped developing and the pregnancy preservation has failed.

However, some hospitals are more cautious and will not announce the termination of test tube embryo development until there is no embryo bud, fetal heartbeat or fetal heartbeat within 90 days of pregnancy. If there is an embryo bud, fetal heartbeat or fetal heartbeat within 90 days of pregnancy, the pregnancy will be restored again. In other words, some embryos develop more slowly, and fetal heartbeat will not occur until about 90 days of pregnancy. If fetal arrest is diagnosed at 70 days of pregnancy, then the test tube embryo may be sentenced to fetal arrest and then become alive.

Therefore, if some hospitals are not careful and meticulous enough, there is a possibility that the fetus may be pronounced alive after being sentenced to miscarriage. We all know that some test tube embryos grow very slowly at first, but gradually they will catch up. There are many reasons for the delayed embryonic development, both of which are possible. For example, the female's progesterone level is low or the egg quality is not good; the male's sperm survival rate is not high, etc., all of which can cause the delayed embryonic development. If the embryonic development process is slow, it is possible that the fetus will be arrested and then alive again.