Threatened miscarriage refers to the occurrence of a small amount of vaginal bleeding before 28 weeks of pregnancy, often dark red, with no pregnancy tissue expelled, and may include pain in the lower abdomen and back. During a gynecological examination, the cervix is closed and the membrane is unruptured, and the pregnancy can continue if the symptoms disappear after rest and treatment.

In handling a threatened miscarriage, it is first necessary to analyze the causes of the miscarriage. Common causes include embryonic factors, mainly chromosomal abnormalities. If the miscarriage is caused by chromosomal abnormalities, it is mostly unavoidable.

Maternal factors, such as systemic diseases in pregnant women, include increased blood pressure, severe anemia, high fever, etc. Pregnancy can mostly continue with treatment of the cause.

Abnormalities in the reproductive organs, such as uterine malformations, submucous and intramural fibroids, adenomyosis, etc., can lead to miscarriage. With appropriate treatment to preserve the pregnancy, there is hope to continue the pregnancy.

If due to endocrine abnormalities, such as luteal phase deficiency or hypothyroidism, supplementing with progesterone and thyroid hormones can mostly allow the pregnancy to continue.

Identifying the cause of a miscarriage is extremely important, as different causes can lead to different pregnancy outcomes.