What are the methods for detecting threatened abortion?

When spotting occurs during pregnancy, doctors generally give a preliminary diagnosis of threatened abortion, and then confirm it based on the results of relevant examinations. At this time, pregnant mothers need to cooperate with doctors to find the cause. The examination of threatened abortion is of great reference significance for understanding the degree of threatened abortion and the condition of the fetus. So, what are the examination methods for threatened abortion?

B-ultrasound examination

Through B-ultrasound examination, we can first know whether the embryo is inside or outside the uterus, thus ruling out ectopic pregnancy; secondly, we can determine whether it is a single or multiple pregnancy, and whether the embryo is alive. In addition, B-ultrasound examination can also know whether the size of the gestational sac is consistent with the gestational age, thus inferring whether the embryo is developing ideally.

Gynecological examination

The doctor needs to use a speculum to do a vaginal examination. Don't worry, this will not increase the risk of miscarriage. The main purpose is to check the amount, color, and source of bleeding, as well as to check whether there are any lesions in the vagina and cervix, whether the cervical opening is dilated, whether there is any tissue stuck in the cervical opening, whether the size of the uterus is consistent with the number of weeks of amenorrhea, whether there is any tenderness, the shape of the uterus and whether there is any mass or tenderness in the bilateral adnexal areas, etc.

hCG value

There are many causes of threatened abortion. Doctors will evaluate the development of the embryo through B-ultrasound and gynecological examinations, and then further determine the chorionic villus activity and progesterone levels by measuring hCG values ​​and progesterone.

hCG is the abbreviation of human chorionic gonadotropin, which is a glycoprotein hormone secreted by the trophoblast cells of the fertilized egg. It begins to be produced when the fertilized egg implants. By dynamically monitoring the concentration changes of hCG in the blood, early pregnancy, miscarriage, ectopic pregnancy and gestational trophoblastic disease can be judged. β-hCG is more commonly seen in the test results because hCG is composed of glycoproteins of α and β dimers, and β-hCG is more specific.

Although hCG varies greatly from person to person, under normal circumstances, hCG will double every 1.7 to 2 days, reaching a peak after 7 to 12 weeks and then decreasing. Therefore, whether the hCG test result doubles is more indicative than a single test value. For this reason, it is more meaningful to test hCG at least twice.

When symptoms of threatened abortion appear, if the hCG doubling is normal, it means that the chorionic villus activity is normal; if the hCG doubling is not good or gradually decreases, there is a possibility of miscarriage or embryo arrest.

Progesterone

Progesterone, also known as progesterone, is a natural, essential progestogen for maintaining pregnancy. It can help the embryo implant, prevent the uterus from contracting before delivery, and promote breast development. When threatened abortion occurs, if the progesterone value tends to decline, the possibility of abortion is very high. The value of progesterone varies from person to person, and the progesterone test values ​​between different women are not very comparable. Instead, the change in the progesterone value before and after the same person can better illustrate the problem. The reference value of most domestic hospitals is that the progesterone content ≥25ng/ml is normal. If the progesterone content is between 15~25ng/ml, it indicates that the corpus luteum function is deficient; if the progesterone content is ≤15ng/ml, not only is the risk of abortion high, but there may also be a risk of ectopic pregnancy. In foreign countries, progesterone ≥10ng/ml is the lower limit of normal, so it must be judged and treated by a doctor.

The above is an introduction to the methods of checking threatened abortion. I hope it will be helpful to you. If you experience signs of threatened abortion, you should seek medical attention immediately.