Can medication completely clear an arrested embryo?

Written by Du Rui Xia
Obstetrics
Updated on March 28, 2025
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After confirming that there is an embryonic arrest, timely treatment should be carried out, which can be either medical abortion or curettage. If the pregnancy is less than 50 days, medical abortion can be an option. Afterwards, an ultrasound should be conducted to check if everything has been completely expelled. If no residues are found, no further treatment is required. However, if any residues are discovered, another curettage must be performed. Therefore, whether a medical abortion can be completely effective in cases of embryonic arrest depends on the gestational age at the time of the occurrence.

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Written by Du Rui Xia
Obstetrics
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Why are there still reactions when the embryo is arrested?

After an occurrence of embryonic arrest, some early pregnancy reactions in pregnant women will gradually ease but not disappear immediately. This is mainly related to elevated hormone levels in the body. Even after the embryonic arrest, the hormone levels in the body remain relatively high. As the arrested embryo is expelled from the body, the hormone levels will gradually decrease, and some early pregnancy reactions will also gradually ease. Generally, these adverse reactions will gradually ease and eventually disappear about a week after the embryo is expelled from the body.

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Written by Zhang Lu
Obstetrics
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How to preserve a pregnancy after embryonic arrest

Embryonic arrest, also known as missed miscarriage, refers to a condition during early pregnancy where if no fetal heartbeat is detected by ultrasound during weeks 8 to 9 of pregnancy, it should be diagnosed as embryonic arrest. Embryonic arrest indicates that the gestational sac has ceased to live, and in such cases, efforts to preserve the pregnancy are pointless as they are meaningless. However, it is important to analyze the reasons behind embryonic arrest to guide future pregnancies. Common causes of embryonic arrest include abnormalities in chromosomes, infections, immunity, and rheumatological markers. When embryonic arrest occurs, tests should be conducted targeting these indicators to clearly identify the abnormal factors, thereby guiding and potentially increasing the success rate of subsequent pregnancies.

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Written by Zhao Li Li
Obstetrics
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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.

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Written by Zhang Lu
Obstetrics
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Can you have intercourse with an arrested embryo development?

It is not recommended to have sexual intercourse when embryo arrest occurs. Embryo arrest, also known as missed miscarriage, refers to the abnormal development of the gestational sac during early pregnancy, and no fetal heartbeat is detected on an ultrasound by the ninth week of pregnancy. Once embryo arrest is diagnosed in clinical practice, a dilation and curettage surgery should be performed as soon as possible to minimize the impact on the fetus. However, during embryo arrest, since the gestational sac itself is not developing normally and is unstable, it is not advisable to have sexual activity. Sexual activity could stimulate the uterus to contract, leading to bleeding, which is not conducive to managing the embryo arrest. Moreover, sexual activity can easily lead to gynecological inflammation. If sexual activity causes gynecological inflammation, it is necessary to treat the inflammation before proceeding with the abortion, which can delay the process. Therefore, it is not recommended to have sexual intercourse during embryo arrest.

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Written by Liu Wei Jie
Obstetrics
1min 6sec home-news-image

What are the reasons for two instances of embryonic arrest?

According to current medical viewpoints, there are various reasons for embryonic arrest, but in 50% of cases, the cause is unknown. Identified causes can generally be divided into several categories such as chromosomal issues, maternal metabolic issues including thyroid disorders, diabetes, and polycystic ovary syndrome. Additionally, immune factors such as lupus erythematosus or Sjögren's syndrome, along with abnormal antibodies, are also reasons. Furthermore, abnormal maternal anatomical structures, like abnormal uterine development, can lead to embryonic arrest. Paternal factors, such as abnormal sperm, can also result in embryonic arrest. Upon encountering embryonic arrest, if it occurs once, it can be observed initially. However, if there are two or more instances, comprehensive examinations for both partners are necessary, including chromosomal tests.