What does it mean to see a gestational sac in the uterus?

The gestational sac is the primitive placental tissue. In the early stages of pregnancy, the fetus has not yet formed. The gestational sac is formed after the sperm and egg combine to form a fertilized egg and then implants in the uterus. The gestational sac can usually be seen in the uterine cavity through B-ultrasound examination 35 days after the menstrual period. So what does it mean to see a gestational sac in the uterus? Let us understand this issue in detail.

The gestational sac is the primitive placental tissue, a small embryo wrapped by the amniotic membrane and vascular network. The gestational sac is the initial form of pregnancy. At that time, the fetus has not yet formed, and the fetal heartbeat is already there when the embryonic bud appears. The gestational sac is also a product of ectopic pregnancy. The fertilized egg fails to enter the uterus at 7 days due to certain factors such as inflammation and adhesion. Ectopic pregnancy usually causes heavy bleeding, and generally the fetus cannot survive.

The gestational sac is only seen in early pregnancy. For women who have regular menstruation of 28 to 30 days, after 35 days of amenorrhea, the gestational sac can be seen in the uterine cavity by B-ultrasound. The diameter of the gestational sac is about 2 cm at 6 weeks of pregnancy and about 5 cm at 10 weeks of pregnancy. It is normal for the gestational sac to be located at the fundus, front wall, back wall, upper part, or middle part of the uterus; it is normal for it to be round, oval, and clear in shape; if the gestational sac is irregular in shape, blurred, and located in the lower part, and the pregnant woman also has abdominal pain or vaginal bleeding, she may have a miscarriage.

The gestational sac is the primitive placental tissue, a small embryo wrapped by the amniotic membrane and vascular network. The gestational sac is the initial form of pregnancy. At that time, the fetus has not yet formed, and the fetal heartbeat is already there when the embryonic bud appears. In the second week, the embryo implants in the endometrium. When it develops into the second germ layer, a large cavity called the primary yolk sac appears on the ventral side of the embryonic disc. The yolk sac continues to shrink and degenerate during embryonic development, but the extraembryonic mesoderm on the wall of the yolk sac is the earliest origin of the formation of blood cells, blood vessels and primitive germ cells - the gestational sac, where the fetus will grow in the future.

I hope this introduction to seeing the gestational sac in the uterus can help everyone. After becoming pregnant, female friends should go to the hospital for examination as soon as possible to determine whether the implantation of the fertilized egg is normal and to rule out the symptoms of ectopic pregnancy. There are many gestational sacs in the uterus and they are generally clearly visible. If the gestational sac is irregular, it can easily cause symptoms of miscarriage in pregnant women.