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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Is embryonic arrest related to emotions?

Embryonic arrest refers to a condition during early pregnancy, around 9-10 weeks, where no fetal heartbeat is detected. In clinical practice, there are many causes of embryonic arrest, including chromosomal abnormalities, uterine malformations, infections, immune factors, and coagulation factors. However, many women do not investigate these reasons after experiencing embryonic arrest. Instead, they look for causes in their daily lives, such as dietary factors or emotional factors. In reality, embryonic arrest is generally not closely related to everyday life factors. Even if emotions fluctuate, such as becoming irritable or easily provoked, which might affect the gestational sac, such impacts usually manifest as symptoms of threatened miscarriage, but generally do not lead to embryonic arrest. Therefore, there is generally no correlation between embryonic arrest and emotional states.

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Written by Du Rui Xia
Obstetrics
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How long to rest after a miscarriage and curettage?

After an embryo arrest, it is generally necessary to undergo a uterine cleaning procedure. At least half a month of rest is required after the cleaning because the procedure can cause considerable harm to a woman's body. The uterus needs time to recover, so it is best to rest at home for half a month after the uterine cleaning. During this period, it is important to rest, avoid overexertion, and not stay up late. Smoking and drinking are also discouraged. Intercourse should be avoided for a month, and it is crucial to keep the perineal area clean and observe any vaginal bleeding. Generally, bleeding may occur after the cleaning, but it usually does not last more than a week.

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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 Liu Wei Jie
Obstetrics
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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.

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Written by Liu Wen Li
Obstetrics
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What happens if there is embryonic arrest without miscarriage?

If an embryo stops developing but is not miscarried, the retained embryonic tissue can disrupt the clotting function in the pregnant woman’s body over time, leading to a condition called a missed miscarriage. Therefore, after a missed miscarriage occurs, it is important to check the duration it has been retained. If it has been a considerable amount of time, clotting function should be examined. If clotting is still within normal ranges, it is crucial to expedite the process allowing the woman to expel the non-viable embryonic tissue as soon as possible, which is beneficial for her health.