Can an arrested embryo be expelled naturally?

Written by Zhang Lu
Obstetrics
Updated on September 02, 2024
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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 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 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 Du Rui Xia
Obstetrics
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How long does it take for a miscarried embryo to be expelled from the body?

After the embryo ceases to develop, some may naturally miscarry. Others may not be expelled naturally and require medical intervention for removal. After the embryo has stopped developing, the timing of expulsion varies from person to person due to different physical constitutions. Most women can naturally miscarry after the embryo stops developing, typically within about ten days when expulsion occurs. However, some embryonic tissue may be larger and adhere to the uterine cavity, preventing expulsion and causing continuous vaginal bleeding. In such cases, a visit to the hospital for an ultrasound is necessary, followed by medical abortion or a dilation and curettage procedure.

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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 a miscarried embryo be expelled naturally?

Embryonic arrest refers to the lack of natural development of the gestational sac in early pregnancy, characterized by the absence of a fetal heartbeat. If there is still no fetal heartbeat or embryo detected during an ultrasound at 8-9 weeks of pregnancy, it should be diagnosed as embryonic arrest. After embryonic arrest occurs, the vast majority require medical intervention. Of course, some cases of embryonic arrest can resolve naturally, leading to a miscarriage. However, this is not a reliable occurrence and is relatively rare in clinical practice. Moreover, the longer the wait, the greater the potential harm to the woman's health. For embryonic arrest, once diagnosed, it is urgent to intervene medically to remove the gestational sac from the uterus, minimizing harm to the woman. Common methods include medical abortion or a dilation and curettage surgery, either of which can be chosen.