• Dr. Jones

Is there any risk to perform IVF after thawing the frozen embryos?

IVF technology helps many infertile people realize their fertility desire, and has gradually become an important way to solve infertility. With the constant development of IVF technology, a variety of technologies for various infertility problems have also been generated. For example, a freezing embryo is a technique for maintaining female reproductive ability. Then, is there a risk to perform IVF after thawing the frozen embryos?

What is a frozen embryo?

Frozen embryo means placing the embryos in a liquefied nitrogen environment at minus 196 degrees Celsius to keep them fresh for a long time. Later, when women need to use embryos to conceive, they can be taken out for IVF.

Why do I need to freeze embryos for IVF?

In fact, the optimal age for women to have children is limited, they have the best fertility timing is about 25-35 years old. After 35 years old, the ovarian function and egg quality of women’s fertility will be decline fast. Therefore, frozen embryos from a young age with good egg quality can be used whenever they want to have a baby later. After frozen embryos are preserved by the freezing methods, they can effectively preserve the reproductive ability of women and provide the possibility of pregnancy to women in need.

What are the problems with thawed embryos?

If you want to use the frozen embryos, you need to thaw the embryos first. However, improper operation during defrosting may also cause some risks. Generally speaking, some cryoprotectants may add to the cells of frozen embryos to prevent the frozen embryos from suffering membrane damage and ice crystal damage. The antifreeze can effectively penetrate into the cells and replace the water in the cells to prevent damage.

When the embryos are at -196 degrees Celsius, they’re actually in a static and undeveloped condition and the metabolism stops, so the frozen embryo will not get old and always maintain strong fertility. The quality of embryos after thawing is the same as before freezing. Therefore, as long as the laboratory staff pay attention to the operation of embryo thawing, there will not be a lot of problems.

Studies prove that the success rate of transferring thawed embryos to women is even higher than fresh embryos. In other words, the transplantation of frozen embryos in IVF is actually without risk, and the success rate of transplantation is even higher than fresh embryos transferred.

At present, many advanced age women who use frozen embryos for their IVF treatment have succeeded outcome. Therefore, if women refuse to pregnancy at their early stage, they can freeze their embryos when they are young and then take them out for pregnancy whenever they want to have a baby.


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