Success rate of frozen embryo transplantation

With the development of medical technology, related technologies such as embryo freezing and in vitro fertilization have become very mature. These technologies have helped many infertile families to become pregnant successfully. Success rate of frozen embryo transplantation_Is the success rate of frozen embryo high? Through reading relevant medical knowledge, I learned that the success rate of frozen embryo transplantation is more than 70%. If you want to know more detailed information, you can read the following content.

1. What is fresh embryo transfer?

During IVF treatment, fresh embryo transfer is performed shortly after egg retrieval. Fresh embryo transfer can occur from the first to the sixth day after successful fertilization.

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Shorten the overall IVF treatment time (if it is successful). For patients who have been eager to get pregnant for a long time, fresh embryo transfer will be performed shortly after egg retrieval, which can shorten the treatment time.

shortcoming:

1. Ovulation-inducing drugs can cause hormone levels to rise. The ovulation-inducing drugs taken during the treatment will increase the hormone levels in the body. If the amount of fertility hormones does not reach normal levels, fresh embryo transfer will bring more difficulties later. After six years of trying to get pregnant, I got pregnant in one month using this trick

2. The endometrium's acceptance rate for transplanted embryos decreases. Some evidence suggests that high levels of estrogen may make the endometrium less receptive to implanted embryos, making it more difficult for the embryo to implant.

What is frozen embryo transfer?

Embryos are frozen and stored, and then transplanted after thawing is called frozen embryo transplant.

advantage:

1. Avoid or reduce delayed ovarian hyperstimulation syndrome (OHSS). Patients have a higher risk of developing ovarian hyperstimulation syndrome during the egg retrieval and transplant process. OHSS can be induced by excess human chorionic gonadotropin following hormonal stimulation of the ovaries. Although the condition is usually mild, OHSS can cause cysts to form and stimulate the production of large amounts of hormones such as estrogen, progesterone, and cytokines. Some rare extreme cases may be dangerous to the patient and the fetus. Frozen embryo transfer can effectively reduce or avoid the occurrence of this situation. A big PK of secrets to having a boy, this is the first one

2. The endometrium has a higher acceptance rate for frozen embryos: When the patient's uterus is better repaired and recovered, the success rate of transplantation will be greatly increased.

3. Allow more time for complex genetic testing. If the patient wishes to use preimplantation genetic diagnosis (PGD) or preimplantation genetic screening (PGS) to determine the most suitable healthy embryo for transplantation, frozen embryo transfer can reserve more time for testing. [Good luck getting pregnant] These 7 signs, seize the opportunity to have a baby!

shortcoming:

Compared with fresh embryo transfer, frozen embryo transfer requires a longer waiting time before pregnancy can be achieved. Even for fresh embryo transfer, the waiting time is long for a family eager to have a baby. Waiting another month for frozen embryo transplantation seems to be even more tormenting.

3. Which has a higher success rate, frozen embryo or fresh embryo?

Many couples who are doing IVF don’t know whether to choose frozen embryos or fresh embryos. There are reports that the success rate of frozen embryos is higher than that of fresh embryos. Is this true?

1. One egg retrieval for multiple uses

During the IVF treatment process, one or more embryos (up to more than ten) are often obtained. In addition to the first transplant, the remaining embryos can be thawed and used for the second transplant. They can also be used for re-transplantation after the failure of the first IVF transplant. This can save treatment costs compared to re-ovulation stimulation. Of course, we hope that the transplant can be successful in one go.

2. Freezing can actually increase the success rate

Some scholars have conducted experiments and found that the successful pregnancy rate is 78% when all embryos are frozen and thawed and then implanted, and the successful pregnancy rate is 50.9% when freshly implanted embryos. The success rate of implanting thawed embryos is higher than that of implanting fresh embryos.

Why freezing embryos can increase the success rate:

The success rate of pregnancy of freshly implanted embryos is low. Some of the more common reasons are that when the ovulation injection is used to induce ovulation, the estrogen in the female body rises to a level beyond the physiological high concentration, and the progesterone that induces ovulation also rises a lot.

Studies have shown that after a woman's endometrium is affected by the increase of these abnormal factors, it will mature prematurely and not develop synchronously with the embryo. When the freshly implanted embryo implants, the endometrium may have passed the stage where it is suitable for implantation. Therefore, the successful pregnancy rate of freshly implanted embryos is lower.

3. Embryo culture recovery is very important

Although the success rate of IVF with implanted thawed embryos is high, the conditions for blastocyst culture are high and the technical requirements for doctors are also high. First of all, the embryo operation technician must have good embryo freezing technology. In this process, it can be ensured that the embryo will not be harmed during each freezing and thawing process, and that each process is perfect and the embryo is not damaged. Secondly, the doctor must have professional medical skills to find the appropriate time to implant the thawed embryos so that the transplantation is more in line with the physiological implantation time, thereby achieving the goal of increasing the clinical pregnancy rate and embryo implantation rate in sync with the endometrium.