In vitro fertilization (IVF) is the assisted reproduction technique in which the union of egg and sperm occurs in the laboratory (hence comes the name of “in vitro”) to get embryos to be transferred to the uterus. If pregnancy happens, it will evolve naturally as any other pregnancy.
The embryo requires to be incubated in the appropriate environment to develop (temperature, darkness, osmolarity, pH and basic nutrients). In the Laboratory of Assisted Reproduction and Embryology, at Fertilab we try to make the environment as close as possible to that would occur in the fallopian tubes if fertilization had been “in vivo”. The third day, the embryo, which has not yet begun to differentiate, used to be 8 cells. Each cell has the same genetic information called pluripotent. It is from this time that embryos require other substances and growth factors and that is why, it is the best time to transfer to the uterus.
IVF is usually accompanied by a hormonal treatment to stimulate the development of more than one egg. Ideally, try to achieve growth of 8-10 follicles from both ovaries. In this way the chances of getting a viable embryo to implantation increase.