Embryo transfer is a very simple process and a very critical step, which is related to the final transfer result. At present, there are three kinds of transplantation methods in clinic:
1. Abdominal ultrasound-guided transplantation
This method is the most common. That is, on the day of transplantation, women are required to hold their urine before operation to fill their bladder. Many people don't understand why they have to hold their urine. This is because the bladder is connected to the uterus. Under the abdominal ultrasound image, the filled bladder appears as black as a small balloon, while the endometrium appears as gray. In contrast, doctors can clearly see the uterus and endometrium and determine the placement of the transplant catheter. Secondly, a full bladder can hold up the uterus, which is beneficial to the placement of embryos.
Then the doctor will select 1-2 healthy embryos and suck them into a transplant catheter, then insert the transplant catheter into the uterine cavity through the vagina and cervix, place it in a preset position, and then inject the liquid containing the embryos into the uterine cavity. The whole operation only takes a few minutes, and there is generally no discomfort.
For abdominal B-ultrasound-guided transplantation, holding urine is the key, and the amount of holding urine depends on whether the doctor can see the image clearly. If you hold your urine less and can't see the image clearly, it will affect the transplantation; Too much urination will also affect the transplant, and it needs to be drained. However, as long as the transplantation is successful, whether it can be successfully implanted has nothing to do with how much urine is held, and there is no need to worry that the embryos will be discharged together after urination.
The data showed that the implantation rate was 28.65438 0% and the pregnancy rate was 42.73%.
2. Transvaginal ultrasound-guided transplantation
This method is mainly adopted by some large reproductive centers in Japan and the United States. Compared with abdominal B-ultrasound, vaginal B-ultrasound does not need to hold urine, but directly puts the B-ultrasound head at the cervix, thus clearly seeing the midline curve of uterus and endometrium. Under the guidance of Yin Chao, doctors can successfully insert the embryo transfer catheter, and can accurately stop the catheter insertion before reaching the bottom of the uterus, which is less likely to cause endometrial damage.
The data showed that the implantation rate was 30.8% and the pregnancy rate was 45.63%.
3. Two-stage and endometrial stimulation transplantation method
Both the first and second transplantation methods belong to one transplantation, that is, 1-2 early embryos or blastocysts are placed at the same time. At present, a small number of foreign hospitals adopt two-step and two-stage transplantation and SEET endometrial stimulation transplantation.
The so-called two-stage transplantation method is to put an early embryo on the first 17 day of menstruation and a blastocyst on the 20th day. Early embryos entering the uterus in advance can stimulate endometrial receptivity, thus improving the implantation rate of blastocysts.
Endometrial stimulation transplantation is a two-stage extension, that is, replacing early embryos with culture medium or stimulating endometrium, thus reducing the risk of multiple pregnancies.
According to the small sample of clinical data, the implantation rate of SEET method is 765438 0.9%, and the pregnancy rate of transplantation is 87%.
The above three transplantation methods are currently used in clinic, but the third one has not been popularized due to technical and patent reasons. But no matter which transplant method is adopted, everyone need not worry, and there is almost no pain during the operation. As long as you cooperate with the doctor's request and relax, I believe a good pregnancy will come soon.