What does it mean when no embryo or heart tube pulsation is seen?

Generally speaking, the fetal heartbeat can be measured by instruments as early as the 10th week of pregnancy. At present, the widely used high-sensitivity Doppler instruments can detect the heartbeat like horse hoofbeats when the fetus is 10 or 12 weeks old. However, some hospitals may use general auscultation. In that case, it will take until 17-18 weeks to track the baby's voice.

What does it mean when there is no embryo or primitive heart tube beating?

The results of B-ultrasound examination are not the same in different periods of pregnancy, especially in the early stages of pregnancy. Only when the pregnancy is more than 6 weeks, the embryonic bud and fetal heart tissue can be seen through B-ultrasound examination. After 7 weeks, the initial primitive heart beat can be seen through B-ultrasound examination. Therefore, if the fetal bud tissue and the initial primitive heart beat are not seen, it is clinically very likely that the pregnancy has not reached the stage where these tissues can be seen. It is recommended to do B-ultrasound examination after 7 days to find out whether the fetal bud tissue and the initial primitive heart beat can be seen.

If the menstruation is normal, and clinical medicine still cannot see the fetal bud tissue and the initial primitive heart tube beat after 49 days of pregnancy, it may be caused by the termination of growth and development of the test tube embryo in clinical medicine. It is recommended to combine clinical medical records, expected date of delivery, and comprehensive analysis of blood HCG results to decide whether to terminate the pregnancy or get pregnant again.

How many days of pregnancy does the fetal heartbeat and fetal bud appear?

During the development stage of sperm and egg combination, the first half month is called pregnant egg. After that, various organs are gradually formed. Before 8 weeks of pregnancy, it is called the embryo (or embryonic bud and fetal heart); the third to the first month and fourth week of pregnancy is called the embryonic bud and fetal heart period.

Due to the growth and development of the test tube embryo, the gestational sac is produced on day 30-40, the embryo bud and fetal heart rate are produced on day 40-50, and the fetal heartbeat is produced on day 50-60. Therefore, the general B-ultrasound should be done around day 60. At this time, you can see whether the gestational sac, embryo bud and fetal heart rate, and fetal heartbeat are normal.

How long does it take to hear the heartbeat during pregnancy?

The fetus may begin to have a heart rate as early as 10 weeks of pregnancy. So, can you hear the fetal heartbeat with auscultation? Yes, but due to the principle of auscultation, the fetal heartbeat cannot be amplified. Therefore, if the fetus is too small, the heart rate is not obvious and cannot be heard with auscultation. Generally, the fetal heartbeat can be measured with a Doppler fetal heart monitor around 10-12 weeks of pregnancy, but it is not easy to hear the fetal heartbeat with a normal stethoscope at this time. The fetal heartbeat can only be heard with a stethoscope after 18-20 weeks of pregnancy.

It should be noted that most people cannot hear the fetal heart rate with a stethoscope, but pregnant women can try to use a stethoscope to listen to the fetal heart rate under the guidance of a doctor. Before 24 weeks of pregnancy, the fetal heart rate is usually just below the navel. After 24 weeks of pregnancy, as the baby grows, the position of the fetal heart will move upward.