Freezing embryos allows a second chance to pregnancy without having to go through the stimulation or by ovarian puncture. Only 10% of embryos does not exceed the process.
The embryos are frozen for the cycle of IVF is effective. During the process, it stimulates ovulation to obtain a sufficient number of embryos that have oocytes, because not all oocytes become fertilized and, if there were only 1.3 oocytes, in many cases there would embryo transfer, with frustration that entails. If there are surplus embryos, following a transfer freeze for a second chance or second child.
After thawing, the embryos are transferred to the uterus. They have an acceptable possibility of pregnancy, almost like fresh.
How frozen embryos?
Embryos are frozen by vitrification, cryopreservation technique with rapid freezing does not harm at all embryos, leaves intact; high cryoprotectant.
Advantages of embryo freezing
The big advantage of freezing embryos is that there may be a second chance for pregnancy, a new transfer without having to go through the stimulation or by ovarian puncture again.
Risk of freezing embryos
The only risk of freezing embryos is in devitrification, at which the embryos may not survive. This is only 10%.