What to do for threatened miscarriage

Every woman wants to have a healthy baby. Even if they pay attention to all aspects and are very careful, some mothers will still encounter signs of threatened miscarriage. For expectant mothers with signs of threatened miscarriage, what tests can be done for threatened miscarriage? What problems should they pay more attention to?

Threatened abortion refers to vaginal bleeding that occurs between the time of conception and the 28th week of pregnancy. Generally, the amount of bleeding is small or only bloody leucorrhea, which can last for 4 to 5 days or more than a week. The following auxiliary examinations and ultrasound examinations can be performed for threatened abortion:

1. Through vaginal B-ultrasound examination, the gestational sac can be seen about 35 days after the last menstrual period, and the primitive heart tube pulsation of the fetus can be seen after 42 days; through abdominal B-ultrasound, the gestational sac can be seen 35 to 42 days after the last menstrual period, and the primitive heart tube pulsation of the fetus can be seen 49 days after the last menstrual period. Therefore, continuous B-ultrasound monitoring can be performed when threatened abortion is found. If only the gestational sac is seen but the fetus is not seen for a long time, or there is a fetal bud but the fetal heart is not seen for a long time, it indicates a poor prognosis. At 49 to 70 days of pregnancy, the fetal heart rate can be heard by Doppler, and the fetal heart rate can be heard from the abdomen by lifting the uterus through bimanual examination. In order to reduce B-ultrasound examinations in early pregnancy and shorten the waiting time, pregnancy tests and blood progesterone level measurements can be performed.

2. Urine pregnancy test or determination of β-subunit level of chorionic gonadotropin in blood: Positive urine pregnancy test: When the fetal sac is seen by vaginal ultrasound at 33-35 days after menstruation, the β-subunit level of chorionic gonadotropin in blood is about 1800 mlu/ml, and it can reach 20,000-1800 mlu/ml at 49 days. Values ​​lower than this generally indicate a poor prognosis. In early pregnancy, the β-subunit level of chorionic gonadotropin in blood should continue to increase, and its doubling time is about 2-3 days, that is, its value can double every 3 days. Therefore, the β-subunit level of chorionic gonadotropin in blood can be repeated after 3 days to understand the development of the fetus. If the β-subunit level of chorionic gonadotropin in blood does not increase significantly or even decreases, it indicates a poor prognosis for the fetus.

However, it should be known that a single positive test for human chorionic gonadotropin in blood or urine does not indicate whether the embryo exists, nor can it determine whether it is an intrauterine or ectopic pregnancy. It must be measured twice to be meaningful, or combined with B-ultrasound to make a clear diagnosis. Determination of blood progesterone levels: Recent studies have found that the determination of blood progesterone levels is more accurate in judging the prognosis of pregnancy. If the blood progesterone level is lower than 5 nanograms per milliliter (5ng/ml), whether it is an intrauterine pregnancy or an ectopic pregnancy, it generally indicates that the pregnancy has died. If the blood progesterone level is higher than 25 nanograms per milliliter, it indicates that the intrauterine pregnancy is alive; if it is between 5 and 25 nanograms per milliliter, a reexamination and follow-up are required.