Do the fetal heartbeat and embryo bud appear together?

Fetal heart rate and fetal bud are two characteristics that will gradually appear in the early stages of pregnancy. Many people want to know whether the fetal heartbeat and fetal bud will appear together. In fact, the two do not necessarily appear at the same time. Generally speaking, the fetal heartbeat appears later than the embryonic bud. At 60 days of pregnancy, the fetal heartbeat and embryonic bud will be visible. Next, I will introduce to you the relevant knowledge about fetal heart rate and fetal bud!

1. What is fetal heartbeat and fetal bud

The embryonic bud and fetal heart refer to the first two weeks of the development of the fertilized egg, which is called the pregnant egg. Later, various organs gradually form. Before 8 weeks of pregnancy, it is called the embryo (or fetal bud); the third to first month and four weeks of pregnancy is called the fetal bud period.

As the embryo develops, the gestational sac is formed in 30-40 days, the fetal bud is formed in 40-50 days, and the fetal heart is formed in 50-60 days. Therefore, B-ultrasound should generally be done around 60 days. At this time, you can see whether the gestational sac, fetal bud, and fetal heart are normal.

2. Characteristics of embryo bud

The first month of pregnancy is the embryonic stage, during which the new life grows the fastest in its life. The sperm and egg combine at the end of the second week of pregnancy. About 4 days after fertilization, the sperm and egg, which have split into cell clusters, travel along the fallopian tube to the uterus. In the third week, the cell mass sheds its outer membrane in preparation for implantation. By the fourth week, the blastocyst has been firmly implanted in the uterus. During this period, the prototypes of the fetal nervous system and circulatory organs (the basic tissues) have almost appeared, and the liver begins to develop significantly from this period; the prototypes of the eyes and nose have not yet been generated, but the prototypes of the mouth and chin can be seen; the umbilical cord connected to the mother also begins to develop from this period.

3. Fetal heart rate characteristics

The fetal heart rate is the heartbeat of the fetus, which can usually be heard in the abdomen with a regular stethoscope between 17 and 20 weeks. The fetal heart rate is 120-160 beats/minute, sometimes even faster and less regular. It becomes more regular towards the end of pregnancy. Sometimes there may be a brief pause in the heartbeat, or the heart rate may reach 180 beats per minute, which is normal. However, if this phenomenon occurs frequently or for a long time, you should seek medical attention in time.

Normal range: The normal fetal heart rate is regular and strong, like the ticking of a clock, which is 120-160 beats/minute. If it is <120 beats/minute or >160 beats/minute, you can repeat it every 10-20 minutes. If it is still abnormal, it indicates fetal intrauterine hypoxia. If the fetal heart rate is within the abnormal range and is accompanied by irregular fetal heart rhythm, it indicates that the fetal hypoxia is more serious.