Will the embryo still grow if the embryo has stopped developing?

Written by Du Rui Xia
Obstetrics
Updated on January 11, 2025
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When embryonic arrest occurs, the embryo will no longer grow. There are many causes for embryonic arrest, such as congenital developmental defects of the gestational sac, abnormalities in the fertilized egg, congenital genetic diseases, and chromosomal abnormalities, all of which can easily lead to the cessation of embryonic development. At this time, regular observation of the embryonic tissue, which will no longer continue to grow and no fetal heartbeat is present, can confirm the condition of embryonic arrest. It is recommended to proceed with further treatment, such as medical abortion or surgical abortion. After the abortion, it is important to rest and enhance nutrition. It is also advised to have a thorough pregnancy check-up before the next pregnancy attempt to prevent recurrence of embryonic arrest.

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Written by Zhang Lu
Obstetrics
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Embryonic arrest means

Embryonic arrest, as the name implies, refers to the cessation of embryo development. In clinical practice, it is also called fibroid miscarriage. Embryonic arrest is a pathological condition. Normally, in the early stages of pregnancy, as activity increases, the gestational sac gradually begins to show a yolk sac, embryo bud, and fetal heartbeat. If the fetal heartbeat is still not visible after a certain period, it indicates that the gestational sac is in a state of decay and that the embryo has stopped developing. Generally, 9 weeks of pregnancy is considered the final deadline for diagnosis. If no fetal heartbeat is detected during an ultrasound at 9 weeks of pregnancy, it can be diagnosed as embryonic arrest. Once diagnosed, it is advisable to proceed with an abortion as soon as possible to minimize harm to the woman’s body. If embryonic arrest occurs consecutively more than twice, a thorough examination of both partners should be conducted to determine the cause, to guide the next pregnancy.

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Written by Zhang Lu
Obstetrics
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Can an ultrasound detect an embryonic arrest?

Embryonic arrest refers to a condition in early pregnancy where no fetal heartbeat appears in the gestational sac. The diagnostic criteria mainly include the lack of observable primitive heart tube pulsation via ultrasound after two months of pregnancy, at which point embryonic arrest can be confirmed. The definitive diagnosis of embryonic arrest is primarily through ultrasound. The following situations observed during an ultrasound can lead to a diagnosis of embryonic arrest: 1. If the diameter of the gestational sac exceeds three centimeters without a clear fetal heartbeat or embryo visible inside, it can be diagnosed as embryonic arrest. 2. If an embryo is already present and approximately 10 days after the appearance of the embryo, an ultrasound still does not show a fetal heartbeat, this situation can also be determined as embryonic arrest.

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Written by Zhang Lu
Obstetrics
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Can an arrested embryo be expelled naturally?

Embryonic arrest, also known as missed miscarriage, refers to the restriction of growth and development of the gestational sac in early pregnancy due to various factors, with no fetal heartbeat detected on an ultrasound at 9 weeks of pregnancy. When embryonic arrest occurs, a natural miscarriage may happen, but it's also possible that a natural miscarriage won't occur. Once embryonic arrest is confirmed, waiting for a natural miscarriage isn't advisable, as it is unpredictable and sometimes there might be no signs of miscarriage for a long time. Unrestricted waiting in such cases can harm a woman's body. Therefore, once embryonic arrest is diagnosed, hospitalization should be promptly sought, and artificial intervention methods such as surgical or medical abortion should be considered. While there is a possibility that the embryo could be expelled naturally, the likelihood is relatively low.

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Written by Zhao Li Li
Obstetrics
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Does an embryonic arrest still have pregnancy reactions?

After a normal miscarriage, hormone levels do not suddenly drop to a non-pregnant state, so pregnancy reactions may still occur. Simply based on the current state of pregnancy reactions, it is not possible to accurately judge the developmental condition of the embryo in the uterine cavity. It is still necessary to undergo regular prenatal checks after becoming pregnant and monitor the development of the embryo in the uterine cavity via ultrasound. If the embryo has already stopped developing, it is necessary to seek medical treatment for an abortion in a timely manner to avoid causing disorders in the body's coagulation function.

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Written by Zhao Li Li
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How to handle bleeding due to embryonic arrest?

If it has already been determined that the embryo has ceased to develop and significant vaginal bleeding has occurred, it is likely that the bleeding is caused by uterine contractions stimulated by the halted embryonic development. In this case, it is first necessary to seek medical attention promptly. After confirming the halted development of the embryo, it is important to perform a surgical abortion promptly to completely remove all tissues associated with the ceased embryonic development, reducing the occurrence of post-abortion bleeding. After the surgery, it is also necessary to promptly use antibiotics to prevent infections within the uterine cavity.