Will an empty sac naturally miscarry?

Written by Zhao Su Min
Obstetrics
Updated on May 22, 2025
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An empty sac does not necessarily lead to a natural miscarriage. Miscarriages are classified into incomplete miscarriage, complete miscarriage, and missed miscarriage. Some people might experience abdominal pain and bleeding after the cessation of development in an empty sac, leading to a miscarriage. Others may retain the dead embryo in the uterine cavity, which is unable to be expelled in a timely manner, manifesting as the disappearance of early pregnancy symptoms, vaginal bleeding, or no symptoms at all, often being discovered during an examination. If the embryo has ceased development for a relatively long period, waiting for a natural miscarriage is not recommended. If the embryo is not expelled for a long time, there may be risks such as the embryo becoming tightly connected to the uterine wall, making dilation and curettage difficult. Additionally, there may be risks of coagulation dysfunction and disseminated intravascular coagulation.

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Written by Du Rui Xia
Obstetrics
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Does a natural miscarriage require surgery?

Generally, after a natural miscarriage, it is not necessary to undergo surgical treatment, as it is usually possible to naturally expel the contents completely. Typically, after a natural miscarriage, the pregnancy tissue can be expelled from the body through contractions of the uterus. However, if there is residual tissue after the miscarriage, a dilation and curettage (D&C) procedure may be required. It is recommended to have an ultrasound at a hospital after a miscarriage to check for any residuals in the uterine cavity. Then, medication or a D&C can be used to remove any remaining tissue. After a natural miscarriage, it is important for a woman to adjust her mindset and take good care of her body to recover and prevent any diseases.

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Written by Du Rui Xia
Obstetrics
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Can a natural miscarriage be completely cleared?

After a natural miscarriage, whether it can be completely cleared varies from individual to individual. Some women may have a complete miscarriage naturally. However, some people may have existing gynecological inflammation or be relatively weak, which can lead to incomplete miscarriage, necessitating further uterine cleaning. After the miscarriage, women should closely monitor their vaginal bleeding and abdominal pain. Normally, after such a miscarriage, abdominal pain should last about two to three days, and vaginal bleeding should clear up within a week. If vaginal bleeding persists for a longer time and abdominal pain occurs, the possibility of residual materials in the uterine cavity should be considered, and it is advised to go to the hospital for further ultrasound examination and subsequent treatment as needed.

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Written by Du Rui Xia
Obstetrics
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Is it easy to get pregnant after a natural miscarriage?

When a natural miscarriage occurs, it is generally not easy to conceive. There are many reasons for natural miscarriage, one common cause is the insufficiency of corpus luteum function in women, leading to low levels of pregnancy hormones in the body, which can easily result in spontaneous miscarriage. Additionally, whether a woman has some gynecological diseases, such as uterine fibroids, endometritis, endometrial displacement, septate uterus, bicornuate uterus, unicornuate uterus, and other uterine issues, can also affect pregnancy and lead to natural miscarriage. Moreover, if the fertilized egg has chromosomal abnormalities during pregnancy, it can also cause a natural miscarriage. Therefore, when women prepare for the next pregnancy, they need to go to the hospital for relevant examinations. After identifying and actively correcting some factors affecting pregnancy, they can then try to conceive again.

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Written by Zhang Lu
Obstetrics
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What is the discharge from a natural miscarriage?

Miscarriage refers to the spontaneous expulsion of the gestational sac from the uterine cavity, without the need for human intervention. Human interventions mainly include medical abortion or painless surgical abortion. During a miscarriage, the gestational sac is expelled from the uterus, so the expelled material is primarily the gestational sac. The sac generally consists of white villous tissue, and during a natural miscarriage, it is essential to identify villous tissue in the pregnancy tissue in order to confirm a natural miscarriage. Besides the villous tissue, due to decidualization changes in the endometrium after pregnancy, the tissue expelled during a miscarriage also contains a certain amount of decidual tissue. Therefore, the material expelled in a natural miscarriage mainly includes the villous tissue, followed by uterine decidual tissue.

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Written by Liu Wei Jie
Obstetrics
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What are the symptoms of a natural miscarriage?

What are the symptoms of a spontaneous miscarriage? Spontaneous miscarriage is a process where the embryo is lost from the mother's body. Before diagnosing a spontaneous miscarriage, it is first necessary to confirm an intrauterine pregnancy. After confirming the intrauterine pregnancy, symptoms include abdominal pain and heavy bleeding, which indicate a spontaneous miscarriage. The manifestations of a spontaneous miscarriage primarily include abdominal pain or bleeding, along with the expulsion of necrotic tissue-like material, which is the embryonic tissue. The symptoms are bleeding and abdominal pain. The symptoms of a spontaneous miscarriage are mainly distinguished from an ectopic pregnancy. An ectopic pregnancy can also present similarly, where an ultrasound fails to reveal a gestational sac, accompanied by abdominal pain and bleeding. Such scenarios should be considered for ectopic pregnancy, whereas abdominal pain and bleeding after confirming an intrauterine pregnancy indicates a spontaneous miscarriage.