Is embryonic arrest common?

Written by Zhang Lu
Obstetrics
Updated on September 05, 2024
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Embryonic Arrest, also known as missed abortion, refers to a condition in early pregnancy where the gestational sac does not develop normally. By the end of the ninth week of pregnancy, no definitive fetal heartbeat can be seen on an ultrasound. Recently, embryonic arrest has become relatively more common in clinical practice, primarily due to various life stresses and the impact of various chemicals. Additionally, the age at which women are having children is gradually increasing, with many women over 30, and even over 35, having their first child. These women, being older, tend to have poorer egg quality, thus increasing the likelihood of embryonic arrest. Women who have previously experienced embryonic arrest should make comprehensive pre-pregnancy preparations and undergo appropriate tests, as well as seek pre-pregnancy guidance to increase the chances of a successful future pregnancy.

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Written by Zhang Lu
Obstetrics
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Will the gestational sac shrink if the embryo stops developing?

Embryo arrest, also known as missed abortion, refers to a condition in the early stages of pregnancy where the gestational sac does not develop normally due to various factors. Generally, the gestational sac will not begin to shrink until the embryo has been arrested for a considerable period. In the initial stages of embryo arrest, since the duration is relatively short, the trophoblastic cells within the gestational sac can still secrete estrogens, progesterone, and chorionic gonadotropin. These hormones stimulate the possible continued growth of the gestational sac in the short term. However, as the duration of the embryo arrest extends, the proliferation of the trophoblastic cells decreases, leading to a decline in hormone levels in the body. This reduces the stimulation to the gestational sac, causing it to gradually shrink, decrease in size, and possibly leading to a natural miscarriage.

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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 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 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 Du Rui Xia
Obstetrics
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Does embryonic arrest definitely require a uterine curettage?

After embryo arrest, it is necessary to terminate the pregnancy in a timely manner, but it is not always necessary to undergo a uterine curettage; medication can also be taken orally to help expel the pregnancy sac. Oral medication can stimulate the uterus and soften the cervix to cause uterine contractions and expel the pregnancy sac outside the uterus. However, if the embryo arrest occurs later in the pregnancy, then an artificial abortion is required, which can be done by direct curettage or uterine clearing to help expel the pregnancy tissue. Therefore, it is recommended to go to the hospital for an ultrasound examination after embryo arrest, and then decide whether to choose medical abortion or uterine clearing based on the timing of the examination. (The specific medication should be taken under the guidance of a doctor.)