Observation time of fetal heart beat
Normal intrauterine pregnancy, 42 days after menopause, B-ultrasound examination can clearly observe the intrauterine embryo bud and fetal heart tube pulsation. However, in some women, irregular menstrual cycle, late ovulation or late implantation of fertilized eggs may delay the appearance of embryo bud and fetal heart tube pulsation. If the embryo is too small, it may mean that the embryo has stopped developing.
Matters needing attention in B-ultrasound examination
If B-ultrasound shows the embryo but there is no heartbeat, it usually means that the embryo is dead or abortion is inevitable. On the other hand, if the B-ultrasound examination is too early, you may not see the germ and fetal heart beat, which does not mean that it is abnormal. In order to better understand the development of embryos, the best B-ultrasound examination time should be about 60 days of pregnancy. At this time, we can more accurately judge whether the fetal sac, embryo and fetal heart are normal.
Germ size comparison table
In order to better understand embryo development, we provide you with a comparison table of embryo bud size. Embryonic buds can be observed by B-ultrasound at 6-7 weeks of pregnancy. With the development of embryo, gestational sac, embryo and fetal heart all have their specific formation time. At the eighth week of pregnancy, the embryo began to take human form, and at the ninth week of pregnancy, the placenta began to appear, and other tissues and internal organs gradually developed and formed.
Handling of special circumstances
If the embryo is not observed after 7 weeks of pregnancy, it may mean that the embryo stops developing. We should go to the hospital in time to check the development of the fetus. Of course, there are also special circumstances, such as irregular menstruation and late ovulation of women. The implantation time of fertilized eggs may be delayed, so the time of embryo germination will be delayed accordingly. At this time, I have to go to the hospital for reexamination after one week to get a more accurate diagnosis.