Abstract:

In vitro fertilization-embryo transfer (IVF-ET) technology is a major breakthrough for the treatment of infertility. Along with the maturation and breakthrough of derivative technologies including intracytoplasmic sperm injection and pre-implantation genetic diagnosis, IVF-ET has become one of the fastest-growing technologies in life sciences. However, the cycle pregnancy rate of IVF-ET is still hovering around 40%. How to improve the success rate of IVF is worth pondering. Meanwhile, how to reduce or avoid the occurrence of complications such as ovarian hyperstimulation syndrome and multiple gestation pregnancy is the problem that clinicians need to remain vigilant of. In IVF, the simple, economical and effective principle should be followed, and the risk prevention should be particularly concerned about in the process of improving pregnancy rate.

Key words: infertility, in vitro fertilization and embryo transfer, oocyte quality, ethnics, risk