Can threatened abortion be detected by B-ultrasound?

Can threatened abortion be detected by B-ultrasound? This is a question that many pregnant mothers are concerned about. B-ultrasound is also one of the important medical means to diagnose threatened abortion, but it cannot be diagnosed by B-ultrasound at all times. For example, when the embryo is too small or the embryo cannot be seen, other medical means are needed to confirm the diagnosis. Let's see what are the examination methods for threatened abortion.

Blood progesterone level measurement: Recent studies have found that the measurement of blood progesterone levels is more accurate in judging the prognosis of pregnancy. If the blood progesterone level is lower than 5 ng/ml, whether it is an intrauterine pregnancy or an ectopic pregnancy, it generally indicates that the pregnancy is dead. If the blood progesterone level is higher than 25 ng/ml, it indicates that the intrauterine pregnancy is alive; if it is between 5 and 25 ng/ml, reexamination and follow-up are required.

Urine pregnancy test or determination of β-subunit levels in the blood: Positive urine pregnancy test: At 33 to 35 days after menstruation, when the gestational sac is seen by vaginal ultrasound, the subunit level in the blood is about 1800 milliunits/ml, and can reach 20,000 units/ml for a period of time. Values ​​below this generally indicate a poor prognosis.

Ultrasound examination: Through vaginal 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; abdominal ultrasound examination, 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.

The above content is what the experts introduced to us about the examination of threatened abortion. Patients are kindly requested to learn about it. After we understand the examination content and items of threatened abortion, we can find the symptoms and do a good job of examination, which can play a key role in diagnosis and treatment.