How many centimeters is the gestational sac from the fundus? The thickness of the uterine wall is about 0.9cm, and the gestational sac is located at the fundus of the uterus. The gestational sac is at the bottom of the uterus, and the implantation position is low, that is, the closer to the cervix, the more dangerous it is. In the past, the main danger came from premature detachment and bleeding of placenta during cervical dilatation. Cesarean section can basically avoid this situation. Pay more attention to yourself, the problem should not be serious.
Pregnant women with gestational sac at the bottom of uterus must go to the hospital to check the changes of placenta and the development of fetus. Because if there is a problem with the placenta during pregnancy, especially bleeding, it may not be easy to show it. Bleeding and calcification of placenta will affect the blood supply of fetus, leading to intrauterine growth retardation.
If the gestational sac appears at the bottom of the uterus, you should go to the hospital to protect the fetus. There are generally two ways to protect the fetus: drugs and infusion. Pregnant women should be protected under the guidance of doctors to avoid miscarriage. In addition, pregnant women friends must reduce exercise, it is best to stay in bed to protect the fetus, so that the effect of protecting the fetus is better, and it can also protect the fetus during activities. There is also the position of the gestational sac is too low, and pregnant women need to go to the hospital for follow-up visits regularly. Through follow-up, we can determine whether this situation has improved, so as to take countermeasures. Gestational sac can only be seen in the early pregnancy, and it disappears after 1 1 weeks of pregnancy, and the placenta replaces its function.
How big is the gestational sac at 7 weeks? For women with menstrual cramps for 28-30 days, after 35 days of menopause, B-ultrasound can see the gestational sac in the uterine cavity. The position of gestational sac is normal in the bottom, front wall, back wall, upper part and middle part of uterus. Normal shape is round, oval and clear; If the gestational sac is irregular, fuzzy and located in the lower part, the pregnant woman may miscarry at the same time as abdominal pain or vaginal bleeding.
Changes of fetal size in gestational sac;
1, 4 weeks: the fetus is only 0.2 cm. As soon as the fertilized egg is implanted, the amniotic cavity is formed, and the volume is very small. Ultrasound shows no signs of pregnancy. 2, 5 weeks: the fetus grows to 0.4 cm, enters the embryonic stage, the amniotic cavity expands, the primitive cardiovascular system appears, and there may be pulsation. B-ultrasound showed a small fetal sac, accounting for less than 1/4 of the uterine cavity, or a germ could be seen. 3, 6 weeks: the fetus grows to 0.85 cm, and the fetal head, brain vesicles, frontal organs, respiratory organs, digestive organs, nerves and other organs differentiate. B-ultrasound can clearly see the fetal sac, and can see the embryo and fetal heartbeat. 4, 7 weeks: The fetus grows to 65,438+0.33 cm, and the embryo has the shape of a human embryo, with all segments differentiated, limbs separated and all systems further developed. B-ultrasound clearly showed the embryo bud and the fetal heartbeat, and the fetal sac occupied about 1/3 of the uterine cavity.